Hi Jonathan，all,

Do we have something to sync next Tuesday?

Thanks Joyce

在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all,

Happy New Year to all! Do we have any topic to sync next week?

BR Joyce

...

在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all

Do you have any topic to sync next Tuesday？ Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync.

Thanks Joyce

...

在 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro.org 写道：

Send Linaro-open-discussions mailing list submissions to linaro-open-discussions@op-lists.linaro.org

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Today's Topics:

1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support (Joyce Qi)

---

Message: 1 Date: Tue, 28 Nov 2023 08:44:14 +0800 From: Joyce Qi joyce.qi@linaro.org Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support To: Salil Mehta salil.mehta@huawei.com Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King linux@armlinux.org.uk, James Morse James.Morse@arm.com, "linaro-open-discussions@op-lists.linaro.org" linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" karl.heubaum@oracle.com, "darren@os.amperecomputing.com" darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org Content-Type: text/plain; charset=gb2312

Hi all，

Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list.

Thanks:) Joyce

...

在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道：

Hi Joyce, I have do not have any.

Thanks Salil From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> Sent: Sunday, November 26, 2023 11:51 AM To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil Mehta <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan Cameron <jonathan.cameron@huawei.com mailto:jonathan.cameron@huawei.com> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

Hi all，

Do we have topic to sync next Tuesday？

Thanks Joyce

在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> 写道：

-----Original Message----- From: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk> Sent: 2023年11月21日 17:45 To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; salil.mehta@huawei.com mailto:salil.mehta@huawei.com; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote:

Also, I have a plan to add an integration test CI in kata community for Vcpu Hotplug on Arm. There we can do more tests integrating with k8s. To do the test, I need a stable git link of Kernel and Qemu including the latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid.

I don't think I properly replied to this. I think what you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code.

For my tree, that will be:

git.armlinux.org.uk/~rmk/linux-arm.git http://git.armlinux.org.uk/~rmk/linux-arm.git aarch64/hotplug-vcpu/head

which will be regularly kept updated and rebased against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels.

Great! That's what I want.

Does that satisfy your need?

Yes. Thanks Russell. It saves me lots of work.

Thanks Jianyong

Thanks.

-- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

---

Subject: Digest Footer

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---

End of Linaro-open-discussions Digest, Vol 38, Issue 14

---

Hi Jonathan,

Thanks for your detailed information, ok, I will cancel next week’s sync and welcome to Inform me when you are ready for the sync.

BR Joyce

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

...

在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all,

Happy New Year to all! Do we have any topic to sync next week?

BR Joyce

...

在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all

Do you have any topic to sync next Tuesday？ Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync.

Thanks Joyce

...

在 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro.org 写道：

Send Linaro-open-discussions mailing list submissions to linaro-open-discussions@op-lists.linaro.org

To subscribe or unsubscribe via email, send a message with subject or body 'help' to linaro-open-discussions-request@op-lists.linaro.org

You can reach the person managing the list at linaro-open-discussions-owner@op-lists.linaro.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Linaro-open-discussions digest..."

Today's Topics:

1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

(Joyce Qi)

---

Message: 1 Date: Tue, 28 Nov 2023 08:44:14 +0800 From: Joyce Qi joyce.qi@linaro.org Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support To: Salil Mehta salil.mehta@huawei.com Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King linux@armlinux.org.uk, James Morse James.Morse@arm.com, "linaro-open-discussions@op-lists.linaro.org" linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" karl.heubaum@oracle.com, "darren@os.amperecomputing.com" darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org Content-Type: text/plain; charset=gb2312

Hi all，

Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list.

Thanks:) Joyce

...

在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道：

Hi Joyce, I have do not have any.

Thanks Salil From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> Sent: Sunday, November 26, 2023 11:51 AM To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil Mehta <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan Cameron <jonathan.cameron@huawei.com mailto:jonathan.cameron@huawei.com> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

Hi all，

Do we have topic to sync next Tuesday？

Thanks Joyce

在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> 写道：

-----Original Message----- From: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk> Sent: 2023年11月21日 17:45 To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; salil.mehta@huawei.com mailto:salil.mehta@huawei.com; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote:

Also, I have a plan to add an integration test CI in kata community for Vcpu Hotplug on Arm. There we can do more tests integrating with k8s. To do the test, I need a stable git link of Kernel and Qemu including the latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid.

I don't think I properly replied to this. I think what you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code.

For my tree, that will be:

git.armlinux.org.uk/~rmk/linux-arm.git http://git.armlinux.org.uk/~rmk/linux-arm.git aarch64/hotplug-vcpu/head

which will be regularly kept updated and rebased against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels.

Great! That's what I want.

Does that satisfy your need?

Yes. Thanks Russell. It saves me lots of work.

Thanks Jianyong

Thanks.

-- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

---

Subject: Digest Footer

Linaro-open-discussions mailing list -- linaro-open-discussions@op-lists.linaro.org To unsubscribe send an email to linaro-open-discussions-leave@op-lists.linaro.org

---

End of Linaro-open-discussions Digest, Vol 38, Issue 14

---

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

...

在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all,

Happy New Year to all! Do we have any topic to sync next week?

BR Joyce

...

在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all

Do you have any topic to sync next Tuesday？ Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync.

Thanks Joyce

...

在 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. org 写道：

Send Linaro-open-discussions mailing list submissions to linaro-open-discussions@op-lists.linaro.org

To subscribe or unsubscribe via email, send a message with subject or body 'help' to linaro-open-discussions-request@op-lists.linaro.org

You can reach the person managing the list at linaro-open-discussions-owner@op-lists.linaro.org

When replying, please edit your Subject line so it is more specific than "Re: Contents of Linaro-open-discussions digest..."

Today's Topics:

1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

(Joyce Qi)

---

---

Message: 1 Date: Tue, 28 Nov 2023 08:44:14 +0800 From: Joyce Qi joyce.qi@linaro.org Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support To: Salil Mehta salil.mehta@huawei.com Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King linux@armlinux.org.uk, James Morse James.Morse@arm.com, "linaro-open-discussions@op-lists.linaro.org" linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" karl.heubaum@oracle.com, "darren@os.amperecomputing.com" darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org Content-Type: text/plain; charset=gb2312

Hi all，

Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list.

Thanks:) Joyce

...

在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道：

Hi Joyce, I have do not have any.

Thanks Salil From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> Sent: Sunday, November 26, 2023 11:51 AM To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil Mehta <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan Cameron <jonathan.cameron@huawei.com mailto:jonathan.cameron@huawei.com> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

Hi all，

Do we have topic to sync next Tuesday？

Thanks Joyce

在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> 写道：

-----Original Message----- From: Russell King <linux@armlinux.org.uk mailto:linux@armlinux.org.uk> Sent: 2023年11月21日 17:45 To: Jianyong Wu <Jianyong.Wu@arm.com mailto:Jianyong.Wu@arm.com> Cc: James Morse <James.Morse@arm.com mailto:James.Morse@arm.com>; salil.mehta@huawei.com mailto:salil.mehta@huawei.com; linaro-open-discussions@op-lists.linaro.org mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com mailto:darren@os.amperecomputing.com; ilkka@os.amperecomputing.com mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com mailto:vishnu@os.amperecomputing.com; Linuxarm <linuxarm@huawei.com mailto:linuxarm@huawei.com>; salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote:

Also, I have a plan to add an integration test CI in kata community for Vcpu Hotplug on Arm. There we can do more tests integrating with k8s. To do the test, I need a stable git link of Kernel and Qemu including the latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid.

I don't think I properly replied to this. I think what you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code.

For my tree, that will be:

git.armlinux.org.uk/~rmk/linux-arm.git http://git.armlinux.org.uk/~rmk/linux-arm.git aarch64/hotplug-vcpu/head

which will be regularly kept updated and rebased against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels.

Great! That's what I want.

Does that satisfy your need?

Yes. Thanks Russell. It saves me lots of work.

Thanks Jianyong

Thanks.

-- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

---

Subject: Digest Footer

Linaro-open-discussions mailing list -- linaro-open-discussions@op-lists.linaro.org To unsubscribe send an email to linaro-open-discussions-leave@op-lists.linaro.org

---

End of Linaro-open-discussions Digest, Vol 38, Issue 14

---

Hi Jonathan，all，

Do you have any topic to sync tomorrow？

Thanks Joyce

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

...

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

...

在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all,

Happy New Year to all! Do we have any topic to sync next week?

BR Joyce

...

在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all

Do you have any topic to sync next Tuesday？ Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync.

Thanks Joyce

...

在 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. org 写道：

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To subscribe or unsubscribe via email, send a message with subject or body 'help' to linaro-open-discussions-request@op-lists.linaro.org

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Today's Topics:

1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support

(Joyce Qi)

---

---

Message: 1 Date: Tue, 28 Nov 2023 08:44:14 +0800 From: Joyce Qi joyce.qi@linaro.org Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support To: Salil Mehta salil.mehta@huawei.com Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King linux@armlinux.org.uk, James Morse James.Morse@arm.com, "linaro-open-discussions@op-lists.linaro.org" linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" karl.heubaum@oracle.com, "darren@os.amperecomputing.com" darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org Content-Type: text/plain; charset=gb2312

Hi all，

Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list.

Thanks:) Joyce

> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： > > Hi Joyce, > I have do not have any. > > Thanks > Salil > From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> > Sent: Sunday, November 26, 2023 11:51 AM > To: Jianyong Wu <Jianyong.Wu@arm.com > mailto:Jianyong.Wu@arm.com> > Cc: Russell King <linux@armlinux.org.uk > mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com > mailto:James.Morse@arm.com>; Salil Mehta > <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; > linaro-open-discussions@op-lists.linaro.org > mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo > Pieralisi <lorenzo.pieralisi@linaro.org > mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com > mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com > mailto:darren@os.amperecomputing.com; > ilkka@os.amperecomputing.com > mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com > mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com > mailto:vishnu@os.amperecomputing.com; Linuxarm > <linuxarm@huawei.com mailto:linuxarm@huawei.com>; > salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan > Cameron <jonathan.cameron@huawei.com > mailto:jonathan.cameron@huawei.com> > Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding > non-RFC patch-set of Virtual CPU Hotplug kernel support > > Hi all， > > Do we have topic to sync next Tuesday？ > > Thanks > Joyce > > > 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com > mailto:Jianyong.Wu@arm.com> 写道： > > > > > -----Original Message----- > From: Russell King <linux@armlinux.org.uk > mailto:linux@armlinux.org.uk> > Sent: 2023年11月21日 17:45 > To: Jianyong Wu <Jianyong.Wu@arm.com > mailto:Jianyong.Wu@arm.com> > Cc: James Morse <James.Morse@arm.com > mailto:James.Morse@arm.com>; salil.mehta@huawei.com > mailto:salil.mehta@huawei.com; > linaro-open-discussions@op-lists.linaro.org > mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi > <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo > Pieralisi <lorenzo.pieralisi@linaro.org > mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com > mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com > mailto:darren@os.amperecomputing.com; > ilkka@os.amperecomputing.com > mailto:ilkka@os.amperecomputing.com; > miguel.luis@oracle.com mailto:miguel.luis@oracle.com; > vishnu@os.amperecomputing.com > mailto:vishnu@os.amperecomputing.com; Linuxarm > <linuxarm@huawei.com mailto:linuxarm@huawei.com>; > salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net > Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding > non-RFC patch-set of Virtual CPU Hotplug kernel support > > On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: > > Also, I have a plan to add an integration test CI in kata > community for Vcpu Hotplug on Arm. There we can do more tests > integrating with k8s. To do the test, I need a stable git link of > Kernel and Qemu including the latest change, thus, I can clone > the code from a fixed source in each test. It's very helpful if you guys could aid. > > I don't think I properly replied to this. I think what you want > is not a "stable" git tree, but a branch that you can pull that always contains the latest code. > > For my tree, that will be: > > git.armlinux.org.uk/~rmk/linux-arm.git > http://git.armlinux.org.uk/~rmk/linux-arm.git > aarch64/hotplug-vcpu/head > > which will be regularly kept updated and rebased against the > mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. > > > Great! That's what I want. > > > Does that satisfy your need? > > Yes. Thanks Russell. It saves me lots of work. > > Thanks > Jianyong > > > Thanks. > > -- > RMK's Patch system: > https://www.armlinux.org.uk/developer/patches/ > https://www.armlinux.org.uk/developer/patches/ > FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! > IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

---

Subject: Digest Footer

Linaro-open-discussions mailing list -- linaro-open-discussions@op-lists.linaro.org To unsubscribe send an email to linaro-open-discussions-leave@op-lists.linaro.org

---

End of Linaro-open-discussions Digest, Vol 38, Issue 14

---

Hi Jonathan,

Thanks for the detailed update. Hoping these issues can be resolved soon:)

Since no other topics brought up, I will cancel tomorrow’s meeting.

在 2024年4月22日，19:07，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

@James, not sure if you can help check this patch?

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

...

Thanks Joyce

...

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

...

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

...

在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道：

Hi Jonathan，all,

Happy New Year to all! Do we have any topic to sync next week?

BR Joyce

> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： > > Hi Jonathan，all > > Do you have any topic to sync next Tuesday？ > Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. > > Thanks > Joyce > > > >> 在 >> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >> org 写道： >> >> Send Linaro-open-discussions mailing list submissions to >> linaro-open-discussions@op-lists.linaro.org >> >> To subscribe or unsubscribe via email, send a message with subject >> or body 'help' to >> linaro-open-discussions-request@op-lists.linaro.org >> >> You can reach the person managing the list at >> linaro-open-discussions-owner@op-lists.linaro.org >> >> When replying, please edit your Subject line so it is more >> specific than "Re: Contents of Linaro-open-discussions digest..." >> >> Today's Topics: >> >> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support >> (Joyce Qi) >> >> >> ------------------------------------------------------------------ >> ---- >> >> Message: 1 >> Date: Tue, 28 Nov 2023 08:44:14 +0800 >> From: Joyce Qi joyce.qi@linaro.org >> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >> patch-set of Virtual CPU Hotplug kernel support >> To: Salil Mehta salil.mehta@huawei.com >> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >> "linaro-open-discussions@op-lists.linaro.org" >> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >> Content-Type: text/plain; charset=gb2312 >> >> Hi all， >> >> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >> >> Thanks:) >> Joyce >> >>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>> >>> Hi Joyce, >>> I have do not have any. >>> >>> Thanks >>> Salil >>> From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> >>> Sent: Sunday, November 26, 2023 11:51 AM >>> To: Jianyong Wu <Jianyong.Wu@arm.com >>> mailto:Jianyong.Wu@arm.com> >>> Cc: Russell King <linux@armlinux.org.uk >>> mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com >>> mailto:James.Morse@arm.com>; Salil Mehta >>> <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; >>> linaro-open-discussions@op-lists.linaro.org >>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>> Pieralisi <lorenzo.pieralisi@linaro.org >>> mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com >>> mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com >>> mailto:darren@os.amperecomputing.com; >>> ilkka@os.amperecomputing.com >>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan >>> Cameron <jonathan.cameron@huawei.com >>> mailto:jonathan.cameron@huawei.com> >>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>> >>> Hi all， >>> >>> Do we have topic to sync next Tuesday？ >>> >>> Thanks >>> Joyce >>> >>> >>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>> mailto:Jianyong.Wu@arm.com> 写道： >>> >>> >>> >>> >>> -----Original Message----- >>> From: Russell King <linux@armlinux.org.uk >>> mailto:linux@armlinux.org.uk> >>> Sent: 2023年11月21日 17:45 >>> To: Jianyong Wu <Jianyong.Wu@arm.com >>> mailto:Jianyong.Wu@arm.com> >>> Cc: James Morse <James.Morse@arm.com >>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>> mailto:salil.mehta@huawei.com; >>> linaro-open-discussions@op-lists.linaro.org >>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>> Pieralisi <lorenzo.pieralisi@linaro.org >>> mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com >>> mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com >>> mailto:darren@os.amperecomputing.com; >>> ilkka@os.amperecomputing.com >>> mailto:ilkka@os.amperecomputing.com; >>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>> vishnu@os.amperecomputing.com >>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>> >>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>> >>> Also, I have a plan to add an integration test CI in kata >>> community for Vcpu Hotplug on Arm. There we can do more tests >>> integrating with k8s. To do the test, I need a stable git link of >>> Kernel and Qemu including the latest change, thus, I can clone >>> the code from a fixed source in each test. It's very helpful if you guys could aid. >>> >>> I don't think I properly replied to this. I think what you want >>> is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>> >>> For my tree, that will be: >>> >>> git.armlinux.org.uk/~rmk/linux-arm.git >>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>> aarch64/hotplug-vcpu/head >>> >>> which will be regularly kept updated and rebased against the >>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>> >>> >>> Great! That's what I want. >>> >>> >>> Does that satisfy your need? >>> >>> Yes. Thanks Russell. It saves me lots of work. >>> >>> Thanks >>> Jianyong >>> >>> >>> Thanks. >>> >>> -- >>> RMK's Patch system: >>> https://www.armlinux.org.uk/developer/patches/ >>> https://www.armlinux.org.uk/developer/patches/ >>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >> >> >> ------------------------------ >> >> Subject: Digest Footer >> >> Linaro-open-discussions mailing list -- >> linaro-open-discussions@op-lists.linaro.org >> To unsubscribe send an email to >> linaro-open-discussions-leave@op-lists.linaro.org >> >> >> ------------------------------ >> >> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >> ******************************************************* >

Thanks Joyce

Hi all,

It seemed that no feedback for the LOD meetings this week, I will cancel it. Welcome to inform me whenever you have request.

Thanks Joyce

On 26 May 2024, at 21:38, Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

...

On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

...

Thanks Joyce

...

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

...

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： > > Hi Jonathan，all, > > Happy New Year to all! > Do we have any topic to sync next week? > > BR > Joyce > >> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >> >> Hi Jonathan，all >> >> Do you have any topic to sync next Tuesday？ >> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >> >> Thanks >> Joyce >> >> >> >>> 在 >>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>> org 写道： >>> >>> Send Linaro-open-discussions mailing list submissions to >>> linaro-open-discussions@op-lists.linaro.org >>> >>> To subscribe or unsubscribe via email, send a message with subject >>> or body 'help' to >>> linaro-open-discussions-request@op-lists.linaro.org >>> >>> You can reach the person managing the list at >>> linaro-open-discussions-owner@op-lists.linaro.org >>> >>> When replying, please edit your Subject line so it is more >>> specific than "Re: Contents of Linaro-open-discussions digest..." >>> >>> Today's Topics: >>> >>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support >>> (Joyce Qi) >>> >>> >>> ------------------------------------------------------------------ >>> ---- >>> >>> Message: 1 >>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>> From: Joyce Qi joyce.qi@linaro.org >>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>> patch-set of Virtual CPU Hotplug kernel support >>> To: Salil Mehta salil.mehta@huawei.com >>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>> "linaro-open-discussions@op-lists.linaro.org" >>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>> Content-Type: text/plain; charset=gb2312 >>> >>> Hi all， >>> >>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>> >>> Thanks:) >>> Joyce >>> >>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>> >>>> Hi Joyce, >>>> I have do not have any. >>>> >>>> Thanks >>>> Salil >>>> From: Joyce Qi <joyce.qi@linaro.org mailto:joyce.qi@linaro.org> >>>> Sent: Sunday, November 26, 2023 11:51 AM >>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> >>>> Cc: Russell King <linux@armlinux.org.uk >>>> mailto:linux@armlinux.org.uk>; James Morse <James.Morse@arm.com >>>> mailto:James.Morse@arm.com>; Salil Mehta >>>> <salil.mehta@huawei.com mailto:salil.mehta@huawei.com>; >>>> linaro-open-discussions@op-lists.linaro.org >>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>> mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com >>>> mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com >>>> mailto:darren@os.amperecomputing.com; >>>> ilkka@os.amperecomputing.com >>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; Jonathan >>>> Cameron <jonathan.cameron@huawei.com >>>> mailto:jonathan.cameron@huawei.com> >>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>> >>>> Hi all， >>>> >>>> Do we have topic to sync next Tuesday？ >>>> >>>> Thanks >>>> Joyce >>>> >>>> >>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> 写道： >>>> >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: Russell King <linux@armlinux.org.uk >>>> mailto:linux@armlinux.org.uk> >>>> Sent: 2023年11月21日 17:45 >>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> >>>> Cc: James Morse <James.Morse@arm.com >>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>> mailto:salil.mehta@huawei.com; >>>> linaro-open-discussions@op-lists.linaro.org >>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>> mailto:lorenzo.pieralisi@linaro.org>; karl.heubaum@oracle.com >>>> mailto:karl.heubaum@oracle.com; darren@os.amperecomputing.com >>>> mailto:darren@os.amperecomputing.com; >>>> ilkka@os.amperecomputing.com >>>> mailto:ilkka@os.amperecomputing.com; >>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>> vishnu@os.amperecomputing.com >>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>> >>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>> >>>> Also, I have a plan to add an integration test CI in kata >>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>> integrating with k8s. To do the test, I need a stable git link of >>>> Kernel and Qemu including the latest change, thus, I can clone >>>> the code from a fixed source in each test. It's very helpful if you guys could aid. >>>> >>>> I don't think I properly replied to this. I think what you want >>>> is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>> >>>> For my tree, that will be: >>>> >>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>> aarch64/hotplug-vcpu/head >>>> >>>> which will be regularly kept updated and rebased against the >>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>> >>>> >>>> Great! That's what I want. >>>> >>>> >>>> Does that satisfy your need? >>>> >>>> Yes. Thanks Russell. It saves me lots of work. >>>> >>>> Thanks >>>> Jianyong >>>> >>>> >>>> Thanks. >>>> >>>> -- >>>> RMK's Patch system: >>>> https://www.armlinux.org.uk/developer/patches/ >>>> https://www.armlinux.org.uk/developer/patches/ >>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>> >>> >>> ------------------------------ >>> >>> Subject: Digest Footer >>> >>> Linaro-open-discussions mailing list -- >>> linaro-open-discussions@op-lists.linaro.org >>> To unsubscribe send an email to >>> linaro-open-discussions-leave@op-lists.linaro.org >>> >>> >>> ------------------------------ >>> >>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>> ******************************************************* >> >

Hi Jonathan，

Sorry to bother you to update every time：）

On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up.

I will check earlier next time.

A few status reports probably make sense but no need for a call.

1. vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. Arch specific version being rebased etc.

@James，can you help check this？

2. https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon)

I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days.

Great，thanks

Joyce

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 26 May 2024 14:39 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

...

On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

...

Thanks Joyce

...

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

...

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all,

Do we have something to sync next Tuesday?

Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan

...

Thanks Joyce

> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： > > Hi Jonathan，all, > > Happy New Year to all! > Do we have any topic to sync next week? > > BR > Joyce > >> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >> >> Hi Jonathan，all >> >> Do you have any topic to sync next Tuesday？ >> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >> >> Thanks >> Joyce >> >> >> >>> 在 >>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>> org 写道： >>> >>> Send Linaro-open-discussions mailing list submissions to >>> linaro-open-discussions@op-lists.linaro.org >>> >>> To subscribe or unsubscribe via email, send a message with >>> subject or body 'help' to >>> linaro-open-discussions-request@op-lists.linaro.org >>> >>> You can reach the person managing the list at >>> linaro-open-discussions-owner@op-lists.linaro.org >>> >>> When replying, please edit your Subject line so it is more >>> specific than "Re: Contents of Linaro-open-discussions digest..." >>> >>> Today's Topics: >>> >>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>> Hotplug kernel support (Joyce Qi) >>> >>> >>> --------------------------------------------------------------- >>> --- >>> ---- >>> >>> Message: 1 >>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>> From: Joyce Qi joyce.qi@linaro.org >>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>> patch-set of Virtual CPU Hotplug kernel support >>> To: Salil Mehta salil.mehta@huawei.com >>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>> "linaro-open-discussions@op-lists.linaro.org" >>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>> Content-Type: text/plain; charset=gb2312 >>> >>> Hi all， >>> >>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>> >>> Thanks:) >>> Joyce >>> >>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>> >>>> Hi Joyce, >>>> I have do not have any. >>>> >>>> Thanks >>>> Salil >>>> From: Joyce Qi <joyce.qi@linaro.org >>>> mailto:joyce.qi@linaro.org> >>>> Sent: Sunday, November 26, 2023 11:51 AM >>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> >>>> Cc: Russell King <linux@armlinux.org.uk >>>> mailto:linux@armlinux.org.uk>; James Morse >>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>> Mehta <salil.mehta@huawei.com >>>> mailto:salil.mehta@huawei.com>; >>>> linaro-open-discussions@op-lists.linaro.org >>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>> mailto:lorenzo.pieralisi@linaro.org>; >>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>> darren@os.amperecomputing.com >>>> mailto:darren@os.amperecomputing.com; >>>> ilkka@os.amperecomputing.com >>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>> mailto:jonathan.cameron@huawei.com> >>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>> >>>> Hi all， >>>> >>>> Do we have topic to sync next Tuesday？ >>>> >>>> Thanks >>>> Joyce >>>> >>>> >>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> 写道： >>>> >>>> >>>> >>>> >>>> -----Original Message----- >>>> From: Russell King <linux@armlinux.org.uk >>>> mailto:linux@armlinux.org.uk> >>>> Sent: 2023年11月21日 17:45 >>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>> mailto:Jianyong.Wu@arm.com> >>>> Cc: James Morse <James.Morse@arm.com >>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>> mailto:salil.mehta@huawei.com; >>>> linaro-open-discussions@op-lists.linaro.org >>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>> mailto:lorenzo.pieralisi@linaro.org>; >>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>> darren@os.amperecomputing.com >>>> mailto:darren@os.amperecomputing.com; >>>> ilkka@os.amperecomputing.com >>>> mailto:ilkka@os.amperecomputing.com; >>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>> vishnu@os.amperecomputing.com >>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>> >>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>> >>>> Also, I have a plan to add an integration test CI in kata >>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>> integrating with k8s. To do the test, I need a stable git link >>>> of Kernel and Qemu including the latest change, thus, I can >>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>> >>>> I don't think I properly replied to this. I think what you >>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>> >>>> For my tree, that will be: >>>> >>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>> aarch64/hotplug-vcpu/head >>>> >>>> which will be regularly kept updated and rebased against the >>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>> >>>> >>>> Great! That's what I want. >>>> >>>> >>>> Does that satisfy your need? >>>> >>>> Yes. Thanks Russell. It saves me lots of work. >>>> >>>> Thanks >>>> Jianyong >>>> >>>> >>>> Thanks. >>>> >>>> -- >>>> RMK's Patch system: >>>> https://www.armlinux.org.uk/developer/patches/ >>>> https://www.armlinux.org.uk/developer/patches/ >>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>> >>> >>> ------------------------------ >>> >>> Subject: Digest Footer >>> >>> Linaro-open-discussions mailing list -- >>> linaro-open-discussions@op-lists.linaro.org >>> To unsubscribe send an email to >>> linaro-open-discussions-leave@op-lists.linaro.org >>> >>> >>> ------------------------------ >>> >>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>> ******************************************************* >> >

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

...

On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up.

A few status reports probably make sense but no need for a call.

1. vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. Arch specific version being rebased etc.

2. https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon)

I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days.

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 26 May 2024 14:39 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

...

On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

...

Thanks Joyce

...

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

...

在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com 写道：

On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi joyce.qi@linaro.org wrote: > Hi Jonathan，all, > > Do we have something to sync next Tuesday? Hi Joyce

Currently nothing.

There has been some activity on CPU HP. Rafael has proposed alternative approach for _STA handling. Seems fine to me (+ I've tested it) but more eyes always good! https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/

Hopefully we can get the testing needed (related to device surprise removal as those paths are touched) and slip this in for next merge window. We want this in ASAP so we find out about any broken firmware in the wild.

Not a useful meeting topic though!

There are a few things we are working on that will want discussion but we aren't ready for next week (and need to give warning to get the right other people there!)

Jonathan > > Thanks > Joyce > >> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >> >> Hi Jonathan，all, >> >> Happy New Year to all! >> Do we have any topic to sync next week? >> >> BR >> Joyce >> >>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>> >>> Hi Jonathan，all >>> >>> Do you have any topic to sync next Tuesday？ >>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>> >>> Thanks >>> Joyce >>> >>> >>> >>>> 在 >>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>> org 写道： >>>> >>>> Send Linaro-open-discussions mailing list submissions to >>>> linaro-open-discussions@op-lists.linaro.org >>>> >>>> To subscribe or unsubscribe via email, send a message with >>>> subject or body 'help' to >>>> linaro-open-discussions-request@op-lists.linaro.org >>>> >>>> You can reach the person managing the list at >>>> linaro-open-discussions-owner@op-lists.linaro.org >>>> >>>> When replying, please edit your Subject line so it is more >>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>> >>>> Today's Topics: >>>> >>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>> Hotplug kernel support (Joyce Qi) >>>> >>>> >>>> --------------------------------------------------------------- >>>> --- >>>> ---- >>>> >>>> Message: 1 >>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>> From: Joyce Qi joyce.qi@linaro.org >>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>> patch-set of Virtual CPU Hotplug kernel support >>>> To: Salil Mehta salil.mehta@huawei.com >>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>> "linaro-open-discussions@op-lists.linaro.org" >>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>> Content-Type: text/plain; charset=gb2312 >>>> >>>> Hi all， >>>> >>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>> >>>> Thanks:) >>>> Joyce >>>> >>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>> >>>>> Hi Joyce, >>>>> I have do not have any. >>>>> >>>>> Thanks >>>>> Salil >>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>> mailto:joyce.qi@linaro.org> >>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>> mailto:Jianyong.Wu@arm.com> >>>>> Cc: Russell King <linux@armlinux.org.uk >>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>> Mehta <salil.mehta@huawei.com >>>>> mailto:salil.mehta@huawei.com>; >>>>> linaro-open-discussions@op-lists.linaro.org >>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>> darren@os.amperecomputing.com >>>>> mailto:darren@os.amperecomputing.com; >>>>> ilkka@os.amperecomputing.com >>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>> mailto:jonathan.cameron@huawei.com> >>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>> >>>>> Hi all， >>>>> >>>>> Do we have topic to sync next Tuesday？ >>>>> >>>>> Thanks >>>>> Joyce >>>>> >>>>> >>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>> >>>>> >>>>> >>>>> >>>>> -----Original Message----- >>>>> From: Russell King <linux@armlinux.org.uk >>>>> mailto:linux@armlinux.org.uk> >>>>> Sent: 2023年11月21日 17:45 >>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>> mailto:Jianyong.Wu@arm.com> >>>>> Cc: James Morse <James.Morse@arm.com >>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>> mailto:salil.mehta@huawei.com; >>>>> linaro-open-discussions@op-lists.linaro.org >>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>> darren@os.amperecomputing.com >>>>> mailto:darren@os.amperecomputing.com; >>>>> ilkka@os.amperecomputing.com >>>>> mailto:ilkka@os.amperecomputing.com; >>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>> vishnu@os.amperecomputing.com >>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>> >>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>> >>>>> Also, I have a plan to add an integration test CI in kata >>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>> integrating with k8s. To do the test, I need a stable git link >>>>> of Kernel and Qemu including the latest change, thus, I can >>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>> >>>>> I don't think I properly replied to this. I think what you >>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>> >>>>> For my tree, that will be: >>>>> >>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>> aarch64/hotplug-vcpu/head >>>>> >>>>> which will be regularly kept updated and rebased against the >>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>> >>>>> >>>>> Great! That's what I want. >>>>> >>>>> >>>>> Does that satisfy your need? >>>>> >>>>> Yes. Thanks Russell. It saves me lots of work. >>>>> >>>>> Thanks >>>>> Jianyong >>>>> >>>>> >>>>> Thanks. >>>>> >>>>> -- >>>>> RMK's Patch system: >>>>> https://www.armlinux.org.uk/developer/patches/ >>>>> https://www.armlinux.org.uk/developer/patches/ >>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>> >>>> >>>> ------------------------------ >>>> >>>> Subject: Digest Footer >>>> >>>> Linaro-open-discussions mailing list -- >>>> linaro-open-discussions@op-lists.linaro.org >>>> To unsubscribe send an email to >>>> linaro-open-discussions-leave@op-lists.linaro.org >>>> >>>> >>>> ------------------------------ >>>> >>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>> ******************************************************* >>> >> >

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Thanks Joyce

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

...

On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up.

A few status reports probably make sense but no need for a call.

1. vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just

too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. Arch specific version being rebased etc.

2. https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon)

I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days.

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 26 May 2024 14:39 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

...

On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

...

Thanks Joyce

...

在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com 写道：

I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though.

I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time.

Thanks,

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 22 March 2024 14:18 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan, all,

Do we want to sync CPU HP or other topics next Tuesday?

Thanks Joyce

> 在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com > 写道： > > On Thu, 22 Feb 2024 18:00:22 +0800 > Joyce Qi joyce.qi@linaro.org wrote: > >> Hi Jonathan，all, >> >> Do we have something to sync next Tuesday? > Hi Joyce > > Currently nothing. > > There has been some activity on CPU HP. > Rafael has proposed alternative approach for _STA handling. > Seems fine to me (+ I've tested it) but more eyes always good! > https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/ > > Hopefully we can get the testing needed (related to device surprise > removal as those paths are touched) and slip this in for next merge > window. We want this in ASAP so we find out about any broken > firmware in the wild. > > Not a useful meeting topic though! > > There are a few things we are working on that will want discussion > but we aren't ready for next week (and need to give warning to get > the right other people there!) > > Jonathan > >> >> Thanks >> Joyce >> >>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>> >>> Hi Jonathan，all, >>> >>> Happy New Year to all! >>> Do we have any topic to sync next week? >>> >>> BR >>> Joyce >>> >>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>> >>>> Hi Jonathan，all >>>> >>>> Do you have any topic to sync next Tuesday？ >>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>> >>>> Thanks >>>> Joyce >>>> >>>> >>>> >>>>> 在 >>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>> org 写道： >>>>> >>>>> Send Linaro-open-discussions mailing list submissions to >>>>> linaro-open-discussions@op-lists.linaro.org >>>>> >>>>> To subscribe or unsubscribe via email, send a message with >>>>> subject or body 'help' to >>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>> >>>>> You can reach the person managing the list at >>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>> >>>>> When replying, please edit your Subject line so it is more >>>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>>> >>>>> Today's Topics: >>>>> >>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>>> Hotplug kernel support (Joyce Qi) >>>>> >>>>> >>>>> --------------------------------------------------------------- >>>>> --- >>>>> ---- >>>>> >>>>> Message: 1 >>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>> From: Joyce Qi joyce.qi@linaro.org >>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>> patch-set of Virtual CPU Hotplug kernel support >>>>> To: Salil Mehta salil.mehta@huawei.com >>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>> Content-Type: text/plain; charset=gb2312 >>>>> >>>>> Hi all， >>>>> >>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>> >>>>> Thanks:) >>>>> Joyce >>>>> >>>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>>> >>>>>> Hi Joyce, >>>>>> I have do not have any. >>>>>> >>>>>> Thanks >>>>>> Salil >>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>> mailto:joyce.qi@linaro.org> >>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>> mailto:Jianyong.Wu@arm.com> >>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>>> Mehta <salil.mehta@huawei.com >>>>>> mailto:salil.mehta@huawei.com>; >>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>> darren@os.amperecomputing.com >>>>>> mailto:darren@os.amperecomputing.com; >>>>>> ilkka@os.amperecomputing.com >>>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>> mailto:jonathan.cameron@huawei.com> >>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>> >>>>>> Hi all， >>>>>> >>>>>> Do we have topic to sync next Tuesday？ >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>> >>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -----Original Message----- >>>>>> From: Russell King <linux@armlinux.org.uk >>>>>> mailto:linux@armlinux.org.uk> >>>>>> Sent: 2023年11月21日 17:45 >>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>> mailto:Jianyong.Wu@arm.com> >>>>>> Cc: James Morse <James.Morse@arm.com >>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>> mailto:salil.mehta@huawei.com; >>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>> darren@os.amperecomputing.com >>>>>> mailto:darren@os.amperecomputing.com; >>>>>> ilkka@os.amperecomputing.com >>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>> vishnu@os.amperecomputing.com >>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>> >>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>> >>>>>> Also, I have a plan to add an integration test CI in kata >>>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>>> integrating with k8s. To do the test, I need a stable git link >>>>>> of Kernel and Qemu including the latest change, thus, I can >>>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>> >>>>>> I don't think I properly replied to this. I think what you >>>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>> >>>>>> For my tree, that will be: >>>>>> >>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>> aarch64/hotplug-vcpu/head >>>>>> >>>>>> which will be regularly kept updated and rebased against the >>>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>> >>>>>> >>>>>> Great! That's what I want. >>>>>> >>>>>> >>>>>> Does that satisfy your need? >>>>>> >>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>> >>>>>> Thanks >>>>>> Jianyong >>>>>> >>>>>> >>>>>> Thanks. >>>>>> >>>>>> -- >>>>>> RMK's Patch system: >>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>> >>>>> >>>>> ------------------------------ >>>>> >>>>> Subject: Digest Footer >>>>> >>>>> Linaro-open-discussions mailing list -- >>>>> linaro-open-discussions@op-lists.linaro.org >>>>> To unsubscribe send an email to >>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>> >>>>> >>>>> ------------------------------ >>>>> >>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>> ******************************************************* >>>> >>> >> >

Hi Jonathan，

On 22 Jul 2024, at 23:22, Jonathan Cameron Jonathan.Cameron@Huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Good to know that，will cancel today’s meeting.

Thanks,

Jonathan

...

Thanks Joyce

...

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

...

On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up.

A few status reports probably make sense but no need for a call.

1. vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just

too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. Arch specific version being rebased etc.

2. https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon)

I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days.

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 26 May 2024 14:39 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

...

On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi joyce.qi@linaro.org wrote:

> Hi Jonathan，all， > > Do you have any topic to sync tomorrow

Hi Joyce,

Two things from me but maybe email is sufficient if we have nothing else on the agenda:

1. [PATCH v5 0/2] Adds additional information to ARM RAS errors

https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t

Originally one of our patch sets (Ampere currently pushing it), but has been stalled a long time. There is a need for input from Tony Luck at Intel but also probably needs some ARM review to push it forwards.

2. From Salil and I, a general update on vCPU HP seems in order.

For kernel side of things, Russell got the _STA change in last cycle, but then Rafael (ACPI maintainer) backed it out again to replace it with a more general solution (avoiding an esoteric bug) That released things a little and got us past one of the more fundamental aspects.

We have been going in circles somewhat since then and ended up with a solution that looks much more like some early proposals but 'hopefully' having been through the process it will be acceptable.

Rafael has confirmed the basic form of the ACPI patches now seems fine to him but will review in detail over next week or so. Obviously we are tight to the end of the cycle, so this may not quite make it. If it doesn't, should be in a good shape for early in 6.11.

I think there are some missing acks for some of the smaller patches + we need agreement from arm64 arch maintainers to the new arch_register_cpu() call. We'd been so focused on major parts of series minor changes to the gicv3 driver etc haven't picked up the tags they should have.

Thanks due to Rafael for quick feedback over last few weeks and Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time and others who have been involved in this epic saga. Not there yet but maybe the finish line is in sight.

Which will unlock the QEMU side of things.

Jonathan

> > Thanks > Joyce > > >> 在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com >> 写道： >> >> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >> >> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >> >> Thanks, >> >> Jonathan >> >> -----Original Message----- >> From: Joyce Qi joyce.qi@linaro.org >> Sent: 22 March 2024 14:18 >> To: Jonathan Cameron jonathan.cameron@huawei.com >> Cc: James Morse via Linaro-open-discussions >> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >> salil.mehta@huawei.com >> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >> >> Hi Jonathan, all, >> >> Do we want to sync CPU HP or other topics next Tuesday? >> >> Thanks >> Joyce >> >>> 在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com >>> 写道： >>> >>> On Thu, 22 Feb 2024 18:00:22 +0800 >>> Joyce Qi joyce.qi@linaro.org wrote: >>> >>>> Hi Jonathan，all, >>>> >>>> Do we have something to sync next Tuesday? >>> Hi Joyce >>> >>> Currently nothing. >>> >>> There has been some activity on CPU HP. >>> Rafael has proposed alternative approach for _STA handling. >>> Seems fine to me (+ I've tested it) but more eyes always good! >>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/ >>> >>> Hopefully we can get the testing needed (related to device surprise >>> removal as those paths are touched) and slip this in for next merge >>> window. We want this in ASAP so we find out about any broken >>> firmware in the wild. >>> >>> Not a useful meeting topic though! >>> >>> There are a few things we are working on that will want discussion >>> but we aren't ready for next week (and need to give warning to get >>> the right other people there!) >>> >>> Jonathan >>> >>>> >>>> Thanks >>>> Joyce >>>> >>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>> >>>>> Hi Jonathan，all, >>>>> >>>>> Happy New Year to all! >>>>> Do we have any topic to sync next week? >>>>> >>>>> BR >>>>> Joyce >>>>> >>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>> >>>>>> Hi Jonathan，all >>>>>> >>>>>> Do you have any topic to sync next Tuesday？ >>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>> >>>>>> >>>>>>> 在 >>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>> org 写道： >>>>>>> >>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>> >>>>>>> To subscribe or unsubscribe via email, send a message with >>>>>>> subject or body 'help' to >>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>> >>>>>>> You can reach the person managing the list at >>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>> >>>>>>> When replying, please edit your Subject line so it is more >>>>>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>> >>>>>>> Today's Topics: >>>>>>> >>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>>>>> Hotplug kernel support (Joyce Qi) >>>>>>> >>>>>>> >>>>>>> --------------------------------------------------------------- >>>>>>> --- >>>>>>> ---- >>>>>>> >>>>>>> Message: 1 >>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>> >>>>>>> Hi all， >>>>>>> >>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>> >>>>>>> Thanks:) >>>>>>> Joyce >>>>>>> >>>>>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>>>>> >>>>>>>> Hi Joyce, >>>>>>>> I have do not have any. >>>>>>>> >>>>>>>> Thanks >>>>>>>> Salil >>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>>>>> Mehta <salil.mehta@huawei.com >>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>> darren@os.amperecomputing.com >>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>> ilkka@os.amperecomputing.com >>>>>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>> >>>>>>>> Hi all， >>>>>>>> >>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>> >>>>>>>> Thanks >>>>>>>> Joyce >>>>>>>> >>>>>>>> >>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> -----Original Message----- >>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>> darren@os.amperecomputing.com >>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>> ilkka@os.amperecomputing.com >>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>> vishnu@os.amperecomputing.com >>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>> >>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>> >>>>>>>> Also, I have a plan to add an integration test CI in kata >>>>>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>>>>> integrating with k8s. To do the test, I need a stable git link >>>>>>>> of Kernel and Qemu including the latest change, thus, I can >>>>>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>> >>>>>>>> I don't think I properly replied to this. I think what you >>>>>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>> >>>>>>>> For my tree, that will be: >>>>>>>> >>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>> >>>>>>>> which will be regularly kept updated and rebased against the >>>>>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>> >>>>>>>> >>>>>>>> Great! That's what I want. >>>>>>>> >>>>>>>> >>>>>>>> Does that satisfy your need? >>>>>>>> >>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>> >>>>>>>> Thanks >>>>>>>> Jianyong >>>>>>>> >>>>>>>> >>>>>>>> Thanks. >>>>>>>> >>>>>>>> -- >>>>>>>> RMK's Patch system: >>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>> >>>>>>> >>>>>>> ------------------------------ >>>>>>> >>>>>>> Subject: Digest Footer >>>>>>> >>>>>>> Linaro-open-discussions mailing list -- >>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>> To unsubscribe send an email to >>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>> >>>>>>> >>>>>>> ------------------------------ >>>>>>> >>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>> ******************************************************* >>>>>> >>>>> >>>> >>> >> >

Thanks Joyce

Hi Joyce,

Sorry for lack of reply. Was a holiday in UK yesterday.

There are a couple of topics brewing, bug we obviously didn't give enough notice to talk about them today.

We may want to try to reschedule. I'll let you know if not.

Jonathan

On Mon, 26 Aug 2024 07:52:29 +0800 Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，all，

Not sure if you have anything（RAS or others） need to sync this Tuesday？

Thanks Joyce

...

On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Thanks,

Jonathan

...

Thanks Joyce

...

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

...

On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up.

A few status reports probably make sense but no need for a call.

1. vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just

too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. Arch specific version being rebased etc.

2. https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-...

The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon)

I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days.

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 26 May 2024 14:39 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，all，

Any topics need to sync next Tuesday？

Thanks Joyce

> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: > > On Mon, 22 Apr 2024 18:39:54 +0800 > Joyce Qi joyce.qi@linaro.org wrote: > >> Hi Jonathan，all， >> >> Do you have any topic to sync tomorrow > > Hi Joyce, > > Two things from me but maybe email is sufficient if we have nothing > else on the agenda: > > 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors > https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r > c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t > > Originally one of our patch sets (Ampere currently pushing it), but > has been stalled a long time. There is a need for input from Tony Luck > at Intel but also probably needs some ARM review to push it forwards. > > 2) From Salil and I, a general update on vCPU HP seems in order. > > For kernel side of things, Russell got the _STA change in last cycle, > but then Rafael (ACPI maintainer) backed it out again to replace it > with a more general solution (avoiding an esoteric bug) That released > things a little and got us past one of the more fundamental aspects. > > We have been going in circles somewhat since then and ended up with a > solution that looks much more like some early proposals but 'hopefully' > having been through the process it will be acceptable. > > Rafael has confirmed the basic form of the ACPI patches now seems fine > to him but will review in detail over next week or so. Obviously we > are tight to the end of the cycle, so this may not quite make it. > If it doesn't, should be in a good shape for early in 6.11. > > I think there are some missing acks for some of the smaller patches + > we need agreement from arm64 arch maintainers to the new > arch_register_cpu() call. We'd been so focused on major parts of > series minor changes to the gicv3 driver etc haven't picked up the tags they should have. > > Thanks due to Rafael for quick feedback over last few weeks and > Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time > and others who have been involved in this epic saga. Not there yet > but maybe the finish line is in sight. > > Which will unlock the QEMU side of things. > > Jonathan > > > > >> >> Thanks >> Joyce >> >> >>> 在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com >>> 写道： >>> >>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>> >>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>> >>> Thanks, >>> >>> Jonathan >>> >>> -----Original Message----- >>> From: Joyce Qi joyce.qi@linaro.org >>> Sent: 22 March 2024 14:18 >>> To: Jonathan Cameron jonathan.cameron@huawei.com >>> Cc: James Morse via Linaro-open-discussions >>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>> salil.mehta@huawei.com >>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>> >>> Hi Jonathan, all, >>> >>> Do we want to sync CPU HP or other topics next Tuesday? >>> >>> Thanks >>> Joyce >>> >>>> 在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com >>>> 写道： >>>> >>>> On Thu, 22 Feb 2024 18:00:22 +0800 >>>> Joyce Qi joyce.qi@linaro.org wrote: >>>> >>>>> Hi Jonathan，all, >>>>> >>>>> Do we have something to sync next Tuesday? >>>> Hi Joyce >>>> >>>> Currently nothing. >>>> >>>> There has been some activity on CPU HP. >>>> Rafael has proposed alternative approach for _STA handling. >>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/ >>>> >>>> Hopefully we can get the testing needed (related to device surprise >>>> removal as those paths are touched) and slip this in for next merge >>>> window. We want this in ASAP so we find out about any broken >>>> firmware in the wild. >>>> >>>> Not a useful meeting topic though! >>>> >>>> There are a few things we are working on that will want discussion >>>> but we aren't ready for next week (and need to give warning to get >>>> the right other people there!) >>>> >>>> Jonathan >>>> >>>>> >>>>> Thanks >>>>> Joyce >>>>> >>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>> >>>>>> Hi Jonathan，all, >>>>>> >>>>>> Happy New Year to all! >>>>>> Do we have any topic to sync next week? >>>>>> >>>>>> BR >>>>>> Joyce >>>>>> >>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>> >>>>>>> Hi Jonathan，all >>>>>>> >>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>> >>>>>>> Thanks >>>>>>> Joyce >>>>>>> >>>>>>> >>>>>>> >>>>>>>> 在 >>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>> org 写道： >>>>>>>> >>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>> >>>>>>>> To subscribe or unsubscribe via email, send a message with >>>>>>>> subject or body 'help' to >>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>> >>>>>>>> You can reach the person managing the list at >>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>> >>>>>>>> When replying, please edit your Subject line so it is more >>>>>>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>> >>>>>>>> Today's Topics: >>>>>>>> >>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>>>>>> Hotplug kernel support (Joyce Qi) >>>>>>>> >>>>>>>> >>>>>>>> --------------------------------------------------------------- >>>>>>>> --- >>>>>>>> ---- >>>>>>>> >>>>>>>> Message: 1 >>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>> >>>>>>>> Hi all， >>>>>>>> >>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>> >>>>>>>> Thanks:) >>>>>>>> Joyce >>>>>>>> >>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>>>>>> >>>>>>>>> Hi Joyce, >>>>>>>>> I have do not have any. >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Salil >>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>>>>>> Mehta <salil.mehta@huawei.com >>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>> darren@os.amperecomputing.com >>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>>>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>> >>>>>>>>> Hi all， >>>>>>>>> >>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>> >>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> -----Original Message----- >>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>>>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>> darren@os.amperecomputing.com >>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>> >>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>> >>>>>>>>> Also, I have a plan to add an integration test CI in kata >>>>>>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>>>>>> integrating with k8s. To do the test, I need a stable git link >>>>>>>>> of Kernel and Qemu including the latest change, thus, I can >>>>>>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>> >>>>>>>>> I don't think I properly replied to this. I think what you >>>>>>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>> >>>>>>>>> For my tree, that will be: >>>>>>>>> >>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>> >>>>>>>>> which will be regularly kept updated and rebased against the >>>>>>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>> >>>>>>>>> >>>>>>>>> Great! That's what I want. >>>>>>>>> >>>>>>>>> >>>>>>>>> Does that satisfy your need? >>>>>>>>> >>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Jianyong >>>>>>>>> >>>>>>>>> >>>>>>>>> Thanks. >>>>>>>>> >>>>>>>>> -- >>>>>>>>> RMK's Patch system: >>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>> >>>>>>>> >>>>>>>> ------------------------------ >>>>>>>> >>>>>>>> Subject: Digest Footer >>>>>>>> >>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>> To unsubscribe send an email to >>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>> >>>>>>>> >>>>>>>> ------------------------------ >>>>>>>> >>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>> ******************************************************* >>>>>>> >>>>>> >>>>> >>>> >>> >> >

Hi Jonathan，

Do you need to sync something tomorrow during the LOD meeting this time？

Thanks Joyce

On 27 Aug 2024, at 16:51, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Sorry for lack of reply. Was a holiday in UK yesterday.

There are a couple of topics brewing, bug we obviously didn't give enough notice to talk about them today.

We may want to try to reschedule. I'll let you know if not.

Jonathan

On Mon, 26 Aug 2024 07:52:29 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Not sure if you have anything（RAS or others） need to sync this Tuesday？

Thanks Joyce

...

On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Thanks,

Jonathan

...

Thanks Joyce

...

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

> On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote: > > Hi Joyce, > > Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up. > > A few status reports probably make sense but no need for a call. > > 1) vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just > too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look > at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. > Arch specific version being rebased etc. > > 2) https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-... > The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors > is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon) > > I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. > One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days. > > Jonathan > > > -----Original Message----- > From: Joyce Qi joyce.qi@linaro.org > Sent: 26 May 2024 14:39 > To: Jonathan Cameron jonathan.cameron@huawei.com > Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com > Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 > > Hi Jonathan，all， > > Any topics need to sync next Tuesday？ > > Thanks > Joyce > > > >> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: >> >> On Mon, 22 Apr 2024 18:39:54 +0800 >> Joyce Qi joyce.qi@linaro.org wrote: >> >>> Hi Jonathan，all， >>> >>> Do you have any topic to sync tomorrow >> >> Hi Joyce, >> >> Two things from me but maybe email is sufficient if we have nothing >> else on the agenda: >> >> 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors >> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r >> c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t >> >> Originally one of our patch sets (Ampere currently pushing it), but >> has been stalled a long time. There is a need for input from Tony Luck >> at Intel but also probably needs some ARM review to push it forwards. >> >> 2) From Salil and I, a general update on vCPU HP seems in order. >> >> For kernel side of things, Russell got the _STA change in last cycle, >> but then Rafael (ACPI maintainer) backed it out again to replace it >> with a more general solution (avoiding an esoteric bug) That released >> things a little and got us past one of the more fundamental aspects. >> >> We have been going in circles somewhat since then and ended up with a >> solution that looks much more like some early proposals but 'hopefully' >> having been through the process it will be acceptable. >> >> Rafael has confirmed the basic form of the ACPI patches now seems fine >> to him but will review in detail over next week or so. Obviously we >> are tight to the end of the cycle, so this may not quite make it. >> If it doesn't, should be in a good shape for early in 6.11. >> >> I think there are some missing acks for some of the smaller patches + >> we need agreement from arm64 arch maintainers to the new >> arch_register_cpu() call. We'd been so focused on major parts of >> series minor changes to the gicv3 driver etc haven't picked up the tags they should have. >> >> Thanks due to Rafael for quick feedback over last few weeks and >> Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time >> and others who have been involved in this epic saga. Not there yet >> but maybe the finish line is in sight. >> >> Which will unlock the QEMU side of things. >> >> Jonathan >> >> >> >> >>> >>> Thanks >>> Joyce >>> >>> >>>> 在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com >>>> 写道： >>>> >>>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>>> >>>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>>> >>>> Thanks, >>>> >>>> Jonathan >>>> >>>> -----Original Message----- >>>> From: Joyce Qi joyce.qi@linaro.org >>>> Sent: 22 March 2024 14:18 >>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>> Cc: James Morse via Linaro-open-discussions >>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>> salil.mehta@huawei.com >>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>> >>>> Hi Jonathan, all, >>>> >>>> Do we want to sync CPU HP or other topics next Tuesday? >>>> >>>> Thanks >>>> Joyce >>>> >>>>> 在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com >>>>> 写道： >>>>> >>>>> On Thu, 22 Feb 2024 18:00:22 +0800 >>>>> Joyce Qi joyce.qi@linaro.org wrote: >>>>> >>>>>> Hi Jonathan，all, >>>>>> >>>>>> Do we have something to sync next Tuesday? >>>>> Hi Joyce >>>>> >>>>> Currently nothing. >>>>> >>>>> There has been some activity on CPU HP. >>>>> Rafael has proposed alternative approach for _STA handling. >>>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/ >>>>> >>>>> Hopefully we can get the testing needed (related to device surprise >>>>> removal as those paths are touched) and slip this in for next merge >>>>> window. We want this in ASAP so we find out about any broken >>>>> firmware in the wild. >>>>> >>>>> Not a useful meeting topic though! >>>>> >>>>> There are a few things we are working on that will want discussion >>>>> but we aren't ready for next week (and need to give warning to get >>>>> the right other people there!) >>>>> >>>>> Jonathan >>>>> >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>> >>>>>>> Hi Jonathan，all, >>>>>>> >>>>>>> Happy New Year to all! >>>>>>> Do we have any topic to sync next week? >>>>>>> >>>>>>> BR >>>>>>> Joyce >>>>>>> >>>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>> >>>>>>>> Hi Jonathan，all >>>>>>>> >>>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>>> >>>>>>>> Thanks >>>>>>>> Joyce >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> 在 >>>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>>> org 写道： >>>>>>>>> >>>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> >>>>>>>>> To subscribe or unsubscribe via email, send a message with >>>>>>>>> subject or body 'help' to >>>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>>> >>>>>>>>> You can reach the person managing the list at >>>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>>> >>>>>>>>> When replying, please edit your Subject line so it is more >>>>>>>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>>> >>>>>>>>> Today's Topics: >>>>>>>>> >>>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>>>>>>> Hotplug kernel support (Joyce Qi) >>>>>>>>> >>>>>>>>> >>>>>>>>> --------------------------------------------------------------- >>>>>>>>> --- >>>>>>>>> ---- >>>>>>>>> >>>>>>>>> Message: 1 >>>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>>> >>>>>>>>> Hi all， >>>>>>>>> >>>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>>> >>>>>>>>> Thanks:) >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>>>>>>> >>>>>>>>>> Hi Joyce, >>>>>>>>>> I have do not have any. >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Salil >>>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>>>>>>> Mehta <salil.mehta@huawei.com >>>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>>>>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>> >>>>>>>>>> Hi all， >>>>>>>>>> >>>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Joyce >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -----Original Message----- >>>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>>>>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>> >>>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>>> >>>>>>>>>> Also, I have a plan to add an integration test CI in kata >>>>>>>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>>>>>>> integrating with k8s. To do the test, I need a stable git link >>>>>>>>>> of Kernel and Qemu including the latest change, thus, I can >>>>>>>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>>> >>>>>>>>>> I don't think I properly replied to this. I think what you >>>>>>>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>>> >>>>>>>>>> For my tree, that will be: >>>>>>>>>> >>>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>>> >>>>>>>>>> which will be regularly kept updated and rebased against the >>>>>>>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Great! That's what I want. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Does that satisfy your need? >>>>>>>>>> >>>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Jianyong >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Thanks. >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> RMK's Patch system: >>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>>> >>>>>>>>> >>>>>>>>> ------------------------------ >>>>>>>>> >>>>>>>>> Subject: Digest Footer >>>>>>>>> >>>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> To unsubscribe send an email to >>>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>>> >>>>>>>>> >>>>>>>>> ------------------------------ >>>>>>>>> >>>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>> ******************************************************* >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >

Hi Jonathan，

On 24 Sep 2024, at 19:49, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Ah. Sorry, I'd lost track of the date and only got back from LPC today.

We will want to organize an MPAM discussion shortly - I'll get in touch once I know the material is ready etc and perhaps it makes sense prior to next scheduled meeting.

Welcome，we can reschedule when you are ready！

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 23 September 2024 02:45 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，

Do you need to sync something tomorrow during the LOD meeting this time？

Thanks Joyce

...

On 27 Aug 2024, at 16:51, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Sorry for lack of reply. Was a holiday in UK yesterday.

There are a couple of topics brewing, bug we obviously didn't give enough notice to talk about them today.

We may want to try to reschedule. I'll let you know if not.

Jonathan

On Mon, 26 Aug 2024 07:52:29 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Not sure if you have anything（RAS or others） need to sync this Tuesday？

Thanks Joyce

...

On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Thanks,

Jonathan

...

Thanks Joyce

...

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

> Hi Jonathan，all， > > Would like to sync next Tuesday for some topics（CXL memory or > others）？ > > Thanks > Joyce > > >> On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote: >> >> Hi Joyce, >> >> Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up. >> >> A few status reports probably make sense but no need for a call. >> >> 1) vCPU HP kernel - will rebase in next day or two and send >> out. The tags for ACPI and (most of) GIC changes came in just >> too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. >> Arch specific version being rebased etc. >> >> 2) >> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-inf >> o-v5-rc3-v5-0-850f9bfb97a8@os.amperecomputing.com/ >> The series: [PATCH v5 0/2] Adds additional information to ARM >> RAS errors is still in need of review and is blocking a key >> feature for us (CPU isolation in rasadaemon) >> >> I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. >> One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days. >> >> Jonathan >> >> >> -----Original Message----- >> From: Joyce Qi joyce.qi@linaro.org >> Sent: 26 May 2024 14:39 >> To: Jonathan Cameron jonathan.cameron@huawei.com >> Cc: James Morse via Linaro-open-discussions >> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >> salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com >> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >> >> Hi Jonathan，all， >> >> Any topics need to sync next Tuesday？ >> >> Thanks >> Joyce >> >> >> >>> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>> >>> On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi >>> joyce.qi@linaro.org wrote: >>> >>>> Hi Jonathan，all， >>>> >>>> Do you have any topic to sync tomorrow >>> >>> Hi Joyce, >>> >>> Two things from me but maybe email is sufficient if we have >>> nothing else on the agenda: >>> >>> 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors >>> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-in >>> fo-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t >>> >>> Originally one of our patch sets (Ampere currently pushing it), >>> but has been stalled a long time. There is a need for input >>> from Tony Luck at Intel but also probably needs some ARM review to push it forwards. >>> >>> 2) From Salil and I, a general update on vCPU HP seems in order. >>> >>> For kernel side of things, Russell got the _STA change in last >>> cycle, but then Rafael (ACPI maintainer) backed it out again to >>> replace it with a more general solution (avoiding an esoteric >>> bug) That released things a little and got us past one of the more fundamental aspects. >>> >>> We have been going in circles somewhat since then and ended up >>> with a solution that looks much more like some early proposals but 'hopefully' >>> having been through the process it will be acceptable. >>> >>> Rafael has confirmed the basic form of the ACPI patches now >>> seems fine to him but will review in detail over next week or >>> so. Obviously we are tight to the end of the cycle, so this may not quite make it. >>> If it doesn't, should be in a good shape for early in 6.11. >>> >>> I think there are some missing acks for some of the smaller >>> patches + we need agreement from arm64 arch maintainers to the >>> new >>> arch_register_cpu() call. We'd been so focused on major parts >>> of series minor changes to the gicv3 driver etc haven't picked up the tags they should have. >>> >>> Thanks due to Rafael for quick feedback over last few weeks and >>> Russell, Miguel, James, Jean-Phillipe, various Huawei folk over >>> time and others who have been involved in this epic saga. Not >>> there yet but maybe the finish line is in sight. >>> >>> Which will unlock the QEMU side of things. >>> >>> Jonathan >>> >>> >>> >>> >>>> >>>> Thanks >>>> Joyce >>>> >>>> >>>>> 在 2024年3月25日，22:27，Jonathan Cameron >>>>> Jonathan.Cameron@huawei.com >>>>> 写道： >>>>> >>>>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>>>> >>>>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>>>> >>>>> Thanks, >>>>> >>>>> Jonathan >>>>> >>>>> -----Original Message----- >>>>> From: Joyce Qi joyce.qi@linaro.org >>>>> Sent: 22 March 2024 14:18 >>>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>>> Cc: James Morse via Linaro-open-discussions >>>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>>> salil.mehta@huawei.com >>>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>> >>>>> Hi Jonathan, all, >>>>> >>>>> Do we want to sync CPU HP or other topics next Tuesday? >>>>> >>>>> Thanks >>>>> Joyce >>>>> >>>>>> 在 2024年2月23日，19:59，Jonathan Cameron >>>>>> Jonathan.Cameron@Huawei.com >>>>>> 写道： >>>>>> >>>>>> On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi >>>>>> joyce.qi@linaro.org wrote: >>>>>> >>>>>>> Hi Jonathan，all, >>>>>>> >>>>>>> Do we have something to sync next Tuesday? >>>>>> Hi Joyce >>>>>> >>>>>> Currently nothing. >>>>>> >>>>>> There has been some activity on CPU HP. >>>>>> Rafael has proposed alternative approach for _STA handling. >>>>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreach >>>>>> er/ >>>>>> >>>>>> Hopefully we can get the testing needed (related to device >>>>>> surprise removal as those paths are touched) and slip this >>>>>> in for next merge window. We want this in ASAP so we find >>>>>> out about any broken firmware in the wild. >>>>>> >>>>>> Not a useful meeting topic though! >>>>>> >>>>>> There are a few things we are working on that will want >>>>>> discussion but we aren't ready for next week (and need to >>>>>> give warning to get the right other people there!) >>>>>> >>>>>> Jonathan >>>>>> >>>>>>> >>>>>>> Thanks >>>>>>> Joyce >>>>>>> >>>>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>> >>>>>>>> Hi Jonathan，all, >>>>>>>> >>>>>>>> Happy New Year to all! >>>>>>>> Do we have any topic to sync next week? >>>>>>>> >>>>>>>> BR >>>>>>>> Joyce >>>>>>>> >>>>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>>> >>>>>>>>> Hi Jonathan，all >>>>>>>>> >>>>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>>> 在 >>>>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>>>> org 写道： >>>>>>>>>> >>>>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> >>>>>>>>>> To subscribe or unsubscribe via email, send a message >>>>>>>>>> with subject or body 'help' to >>>>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>>>> >>>>>>>>>> You can reach the person managing the list at >>>>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>>>> >>>>>>>>>> When replying, please edit your Subject line so it is >>>>>>>>>> more specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>>>> >>>>>>>>>> Today's Topics: >>>>>>>>>> >>>>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual >>>>>>>>>> CPU Hotplug kernel support (Joyce Qi) >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -------------------------------------------------------- >>>>>>>>>> ------- >>>>>>>>>> --- >>>>>>>>>> ---- >>>>>>>>>> >>>>>>>>>> Message: 1 >>>>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>>>> >>>>>>>>>> Hi all， >>>>>>>>>> >>>>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>>>> >>>>>>>>>> Thanks:) >>>>>>>>>> Joyce >>>>>>>>>> >>>>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta >>>>>>>>>>> salil.mehta@huawei.com 写道： >>>>>>>>>>> >>>>>>>>>>> Hi Joyce, >>>>>>>>>>> I have do not have any. >>>>>>>>>>> >>>>>>>>>>> Thanks >>>>>>>>>>> Salil >>>>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; >>>>>>>>>>> Salil Mehta <salil.mehta@huawei.com >>>>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>> Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>> kernel support >>>>>>>>>>> >>>>>>>>>>> Hi all， >>>>>>>>>>> >>>>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>>>> >>>>>>>>>>> Thanks >>>>>>>>>>> Joyce >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> -----Original Message----- >>>>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>> Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>> mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi >>>>>>>>>>> <lorenzo.pieralisi@linaro.org >>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>> kernel support >>>>>>>>>>> >>>>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>>>> >>>>>>>>>>> Also, I have a plan to add an integration test CI in >>>>>>>>>>> kata community for Vcpu Hotplug on Arm. There we can do >>>>>>>>>>> more tests integrating with k8s. To do the test, I need >>>>>>>>>>> a stable git link of Kernel and Qemu including the >>>>>>>>>>> latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>>>> >>>>>>>>>>> I don't think I properly replied to this. I think what >>>>>>>>>>> you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>>>> >>>>>>>>>>> For my tree, that will be: >>>>>>>>>>> >>>>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>>>> >>>>>>>>>>> which will be regularly kept updated and rebased >>>>>>>>>>> against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Great! That's what I want. >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Does that satisfy your need? >>>>>>>>>>> >>>>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>>>> >>>>>>>>>>> Thanks >>>>>>>>>>> Jianyong >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Thanks. >>>>>>>>>>> >>>>>>>>>>> -- >>>>>>>>>>> RMK's Patch system: >>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> ------------------------------ >>>>>>>>>> >>>>>>>>>> Subject: Digest Footer >>>>>>>>>> >>>>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> To unsubscribe send an email to >>>>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> ------------------------------ >>>>>>>>>> >>>>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>>> ******************************************************* >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >

Thanks Joyce

Hi Joyce,

I'm checking the availability of people for the MPAM topic.

In the meantime one other topic might be good to discuss briefly.

Flush by PA range - need for a mini subsystem...

This is needed for CXL and we've jumped through various possible ways to handle it. 1) PSCI call (not currently in spec) Doesn't work well as 'only' solution as some hardware provides direct memory mapped IO interfaces for this.

2) ACPI wrapping of both PSCI call and memory mapped. Unfortunately you can wrap SCMI (via a PCC channel) but not (as I understand it SMCCC) so I don't think an ACPI wrapper in general works.

3) Current option: Face up to the fact we need to just do this kernel first with drivers for the various hardware that surfaces. We aren't particularly far into a design yet so maybe email is fine for now if people are busy.

For this I'm thinking a really small subsystem / class. Lots of design options but one might be 1) Driver registers with class and provides PA ranges for which it needs to be notified (simpler option is it gets notified of everything) Class is there for userspace to be able to see what is involved... 2) Notification chain follows similar design to mmu notifiers, just on physical addresses and global rather than tied to each mm.

Requirements for design: 1) Multiple entities may need to be told to flush for a given range (interleaving etc may be going on). 2) Flush should be range. Any hardware that doesn't support range will need to flush everything. 3) Support rich set of flushes. Drivers may have to upgrade the lighter ones to what they support (cache coherency protocols all allow this so should be technically fine to do rather than reject the flush) Other things I've forgotten?

In particular I'd like any insights people have on plausible hardware designs that this approach might not work for.

A sticky corner is how to know that all drivers for architecturally necessary flushes are present. Easy to check if there is one covering the range, not so easy to check if one instance of an interleaves solution is missing. We can probably solve this at the individual driver level, but it's ugly.

Jonathan

On Mon, 21 Oct 2024 14:53:50 +0800 Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，

Would you like to discuss the MPAM topics during this Tuesday(tomorrow) LOD meeting?

Thanks Joyce

...

On 24 Sep 2024, at 21:15, Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，

...

On 24 Sep 2024, at 19:49, Jonathan Cameron <jonathan.cameron@huawei.com mailto:jonathan.cameron@huawei.com> wrote:

Ah. Sorry, I'd lost track of the date and only got back from LPC today.

We will want to organize an MPAM discussion shortly - I'll get in touch once I know the material is ready etc and perhaps it makes sense prior to next scheduled meeting.

Welcome，we can reschedule when you are ready！

...

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 23 September 2024 02:45 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，

Do you need to sync something tomorrow during the LOD meeting this time？

Thanks Joyce

...

On 27 Aug 2024, at 16:51, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Sorry for lack of reply. Was a holiday in UK yesterday.

There are a couple of topics brewing, bug we obviously didn't give enough notice to talk about them today.

We may want to try to reschedule. I'll let you know if not.

Jonathan

On Mon, 26 Aug 2024 07:52:29 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Not sure if you have anything（RAS or others） need to sync this Tuesday？

Thanks Joyce

...

On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote: > Hi Jonathan，all， > > Do we need a call next Tuesday to talk about the below RAS series > topics？ > Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Thanks,

Jonathan

> Thanks > Joyce > > >> On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote: >> >> Hi Joyce, >> >> Unfortunately I have a clash on Tuesday and I think James is >> currently on leave (via an autoresponder message). >> >> Let me check if we have urgent issues - perhaps we can schedule a >> call at a different time. >> >> We are working with Mauro Carvalho Chehab who recently rejoined >> Huawei and is a long time RAS expert + kernel maintainer to try >> and unblock the RAS series mentioned below. >> >> For vCPU HP the kernel patches still haven't been picked up, but I >> can poke the relevant maintainers via email. It needs to go >> through the ARM64 main kernel tree I think and Will and Catalin >> have not yet replied. >> >> The NUMA CXL memory topic hit an not particularly amusing issue. >> Mike Rapoport has decided it's time to finally unify the x86 >> handling with everyone else's. He's doing the work which is good, >> but on the downside it stalls ARM support for now and the >> unification is proving tricky it seems. >> >> Jonathan >> >> >> On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org >> wrote: >> >>> Hi Jonathan，all， >>> >>> Would like to sync next Tuesday for some topics（CXL memory or >>> others）？ >>> >>> Thanks >>> Joyce >>> >>> >>>> On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>>> >>>> Hi Joyce, >>>> >>>> Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up. >>>> >>>> A few status reports probably make sense but no need for a call. >>>> >>>> 1) vCPU HP kernel - will rebase in next day or two and send >>>> out. The tags for ACPI and (most of) GIC changes came in just >>>> too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. >>>> Arch specific version being rebased etc. >>>> >>>> 2) >>>> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-inf >>>> o-v5-rc3-v5-0-850f9bfb97a8@os.amperecomputing.com/ >>>> The series: [PATCH v5 0/2] Adds additional information to ARM >>>> RAS errors is still in need of review and is blocking a key >>>> feature for us (CPU isolation in rasadaemon) >>>> >>>> I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. >>>> One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days. >>>> >>>> Jonathan >>>> >>>> >>>> -----Original Message----- >>>> From: Joyce Qi joyce.qi@linaro.org >>>> Sent: 26 May 2024 14:39 >>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>> Cc: James Morse via Linaro-open-discussions >>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>> salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com >>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>> >>>> Hi Jonathan，all， >>>> >>>> Any topics need to sync next Tuesday？ >>>> >>>> Thanks >>>> Joyce >>>> >>>> >>>> >>>>> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>>>> >>>>> On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi >>>>> joyce.qi@linaro.org wrote: >>>>> >>>>>> Hi Jonathan，all， >>>>>> >>>>>> Do you have any topic to sync tomorrow >>>>> >>>>> Hi Joyce, >>>>> >>>>> Two things from me but maybe email is sufficient if we have >>>>> nothing else on the agenda: >>>>> >>>>> 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors >>>>> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-in >>>>> fo-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t >>>>> >>>>> Originally one of our patch sets (Ampere currently pushing it), >>>>> but has been stalled a long time. There is a need for input >>>>> from Tony Luck at Intel but also probably needs some ARM review to push it forwards. >>>>> >>>>> 2) From Salil and I, a general update on vCPU HP seems in order. >>>>> >>>>> For kernel side of things, Russell got the _STA change in last >>>>> cycle, but then Rafael (ACPI maintainer) backed it out again to >>>>> replace it with a more general solution (avoiding an esoteric >>>>> bug) That released things a little and got us past one of the more fundamental aspects. >>>>> >>>>> We have been going in circles somewhat since then and ended up >>>>> with a solution that looks much more like some early proposals but 'hopefully' >>>>> having been through the process it will be acceptable. >>>>> >>>>> Rafael has confirmed the basic form of the ACPI patches now >>>>> seems fine to him but will review in detail over next week or >>>>> so. Obviously we are tight to the end of the cycle, so this may not quite make it. >>>>> If it doesn't, should be in a good shape for early in 6.11. >>>>> >>>>> I think there are some missing acks for some of the smaller >>>>> patches + we need agreement from arm64 arch maintainers to the >>>>> new >>>>> arch_register_cpu() call. We'd been so focused on major parts >>>>> of series minor changes to the gicv3 driver etc haven't picked up the tags they should have. >>>>> >>>>> Thanks due to Rafael for quick feedback over last few weeks and >>>>> Russell, Miguel, James, Jean-Phillipe, various Huawei folk over >>>>> time and others who have been involved in this epic saga. Not >>>>> there yet but maybe the finish line is in sight. >>>>> >>>>> Which will unlock the QEMU side of things. >>>>> >>>>> Jonathan >>>>> >>>>> >>>>> >>>>> >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>> >>>>>>> 在 2024年3月25日，22:27，Jonathan Cameron >>>>>>> Jonathan.Cameron@huawei.com >>>>>>> 写道： >>>>>>> >>>>>>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>>>>>> >>>>>>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>>>>>> >>>>>>> Thanks, >>>>>>> >>>>>>> Jonathan >>>>>>> >>>>>>> -----Original Message----- >>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>> Sent: 22 March 2024 14:18 >>>>>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>>>>> Cc: James Morse via Linaro-open-discussions >>>>>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>>>>> salil.mehta@huawei.com >>>>>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>> >>>>>>> Hi Jonathan, all, >>>>>>> >>>>>>> Do we want to sync CPU HP or other topics next Tuesday? >>>>>>> >>>>>>> Thanks >>>>>>> Joyce >>>>>>> >>>>>>>> 在 2024年2月23日，19:59，Jonathan Cameron >>>>>>>> Jonathan.Cameron@Huawei.com >>>>>>>> 写道： >>>>>>>> >>>>>>>> On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi >>>>>>>> joyce.qi@linaro.org wrote: >>>>>>>> >>>>>>>>> Hi Jonathan，all, >>>>>>>>> >>>>>>>>> Do we have something to sync next Tuesday? >>>>>>>> Hi Joyce >>>>>>>> >>>>>>>> Currently nothing. >>>>>>>> >>>>>>>> There has been some activity on CPU HP. >>>>>>>> Rafael has proposed alternative approach for _STA handling. >>>>>>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>>>>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreach >>>>>>>> er/ >>>>>>>> >>>>>>>> Hopefully we can get the testing needed (related to device >>>>>>>> surprise removal as those paths are touched) and slip this >>>>>>>> in for next merge window. We want this in ASAP so we find >>>>>>>> out about any broken firmware in the wild. >>>>>>>> >>>>>>>> Not a useful meeting topic though! >>>>>>>> >>>>>>>> There are a few things we are working on that will want >>>>>>>> discussion but we aren't ready for next week (and need to >>>>>>>> give warning to get the right other people there!) >>>>>>>> >>>>>>>> Jonathan >>>>>>>> >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>>>> >>>>>>>>>> Hi Jonathan，all, >>>>>>>>>> >>>>>>>>>> Happy New Year to all! >>>>>>>>>> Do we have any topic to sync next week? >>>>>>>>>> >>>>>>>>>> BR >>>>>>>>>> Joyce >>>>>>>>>> >>>>>>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>>>>> >>>>>>>>>>> Hi Jonathan，all >>>>>>>>>>> >>>>>>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>>>>>> >>>>>>>>>>> Thanks >>>>>>>>>>> Joyce >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>> 在 >>>>>>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>>>>>> org 写道： >>>>>>>>>>>> >>>>>>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>> >>>>>>>>>>>> To subscribe or unsubscribe via email, send a message >>>>>>>>>>>> with subject or body 'help' to >>>>>>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>>>>>> >>>>>>>>>>>> You can reach the person managing the list at >>>>>>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>>>>>> >>>>>>>>>>>> When replying, please edit your Subject line so it is >>>>>>>>>>>> more specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>>>>>> >>>>>>>>>>>> Today's Topics: >>>>>>>>>>>> >>>>>>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual >>>>>>>>>>>> CPU Hotplug kernel support (Joyce Qi) >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> -------------------------------------------------------- >>>>>>>>>>>> ------- >>>>>>>>>>>> --- >>>>>>>>>>>> ---- >>>>>>>>>>>> >>>>>>>>>>>> Message: 1 >>>>>>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>>>>>> >>>>>>>>>>>> Hi all， >>>>>>>>>>>> >>>>>>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>>>>>> >>>>>>>>>>>> Thanks:) >>>>>>>>>>>> Joyce >>>>>>>>>>>> >>>>>>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta >>>>>>>>>>>>> salil.mehta@huawei.com 写道： >>>>>>>>>>>>> >>>>>>>>>>>>> Hi Joyce, >>>>>>>>>>>>> I have do not have any. >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks >>>>>>>>>>>>> Salil >>>>>>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; >>>>>>>>>>>>> Salil Mehta <salil.mehta@huawei.com >>>>>>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>>>> Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>>>> kernel support >>>>>>>>>>>>> >>>>>>>>>>>>> Hi all， >>>>>>>>>>>>> >>>>>>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks >>>>>>>>>>>>> Joyce >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> -----Original Message----- >>>>>>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>>>> Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>>>> mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi >>>>>>>>>>>>> <lorenzo.pieralisi@linaro.org >>>>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>>>> kernel support >>>>>>>>>>>>> >>>>>>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>>>>>> >>>>>>>>>>>>> Also, I have a plan to add an integration test CI in >>>>>>>>>>>>> kata community for Vcpu Hotplug on Arm. There we can do >>>>>>>>>>>>> more tests integrating with k8s. To do the test, I need >>>>>>>>>>>>> a stable git link of Kernel and Qemu including the >>>>>>>>>>>>> latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>>>>>> >>>>>>>>>>>>> I don't think I properly replied to this. I think what >>>>>>>>>>>>> you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>>>>>> >>>>>>>>>>>>> For my tree, that will be: >>>>>>>>>>>>> >>>>>>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>>>>>> >>>>>>>>>>>>> which will be regularly kept updated and rebased >>>>>>>>>>>>> against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Great! That's what I want. >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Does that satisfy your need? >>>>>>>>>>>>> >>>>>>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks >>>>>>>>>>>>> Jianyong >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks. >>>>>>>>>>>>> >>>>>>>>>>>>> -- >>>>>>>>>>>>> RMK's Patch system: >>>>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> ------------------------------ >>>>>>>>>>>> >>>>>>>>>>>> Subject: Digest Footer >>>>>>>>>>>> >>>>>>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>> To unsubscribe send an email to >>>>>>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>>> ------------------------------ >>>>>>>>>>>> >>>>>>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>>>>> ******************************************************* >>>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >

Thanks Joyce

Hi Jonathan,

Thanks a lot for the detailed description and document sharing. I have uploaded the MPAM materials to the LOD Confluence.

https://linaro.atlassian.net/wiki/spaces/LOD/overview%EF%BF%BC

@James,

Are you available to join tomorrow’s LoD meeting for the MPAM topics ? If not ,can you advise your availability time?

Thanks Joyce

On 21 Oct 2024, at 17:26, Jonathan Cameron Jonathan.Cameron@Huawei.com wrote:

On Mon, 21 Oct 2024 09:54:16 +0100 Jonathan Cameron Jonathan.Cameron@Huawei.com wrote:

...

Hi Joyce,

I'm checking the availability of people for the MPAM topic.

zhengheng has sent me some slides on MPAM. I'll mail Joyce with them shortly to upload.

...

In the meantime one other topic might be good to discuss briefly.

Flush by PA range - need for a mini subsystem...

This is needed for CXL and we've jumped through various possible ways to handle it.

1. PSCI call (not currently in spec)

Doesn't work well as 'only' solution as some hardware provides direct memory mapped IO interfaces for this.

2. ACPI wrapping of both PSCI call and memory mapped.

Unfortunately you can wrap SCMI (via a PCC channel) but not (as I understand it SMCCC) so I don't think an ACPI wrapper in general works.

3. Current option: Face up to the fact we need to just do this kernel first with

drivers for the various hardware that surfaces. We aren't particularly far into a design yet so maybe email is fine for now if people are busy.

For this I'm thinking a really small subsystem / class. Lots of design options but one might be

1. Driver registers with class and provides PA ranges for which it needs

to be notified (simpler option is it gets notified of everything) Class is there for userspace to be able to see what is involved... 2) Notification chain follows similar design to mmu notifiers, just on physical addresses and global rather than tied to each mm.

Requirements for design:

1. Multiple entities may need to be told to flush for a given range

(interleaving etc may be going on). 2) Flush should be range. Any hardware that doesn't support range will need to flush everything. 3) Support rich set of flushes. Drivers may have to upgrade the lighter ones to what they support (cache coherency protocols all allow this so should be technically fine to do rather than reject the flush) Other things I've forgotten?

In particular I'd like any insights people have on plausible hardware designs that this approach might not work for.

A sticky corner is how to know that all drivers for architecturally necessary flushes are present. Easy to check if there is one covering the range, not so easy to check if one instance of an interleaves solution is missing. We can probably solve this at the individual driver level, but it's ugly.

Jonathan

On Mon, 21 Oct 2024 14:53:50 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，

Would you like to discuss the MPAM topics during this Tuesday(tomorrow) LOD meeting?

Thanks Joyce

...

On 24 Sep 2024, at 21:15, Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，

...

On 24 Sep 2024, at 19:49, Jonathan Cameron <jonathan.cameron@huawei.com mailto:jonathan.cameron@huawei.com> wrote:

Ah. Sorry, I'd lost track of the date and only got back from LPC today.

We will want to organize an MPAM discussion shortly - I'll get in touch once I know the material is ready etc and perhaps it makes sense prior to next scheduled meeting.

Welcome，we can reschedule when you are ready！

...

Jonathan

-----Original Message----- From: Joyce Qi joyce.qi@linaro.org Sent: 23 September 2024 02:45 To: Jonathan Cameron jonathan.cameron@huawei.com Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14

Hi Jonathan，

Do you need to sync something tomorrow during the LOD meeting this time？

Thanks Joyce

...

On 27 Aug 2024, at 16:51, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Sorry for lack of reply. Was a holiday in UK yesterday.

There are a couple of topics brewing, bug we obviously didn't give enough notice to talk about them today.

We may want to try to reschedule. I'll let you know if not.

Jonathan

On Mon, 26 Aug 2024 07:52:29 +0800 Joyce Qi joyce.qi@linaro.org wrote:

> Hi Jonathan，all， > > Not sure if you have anything（RAS or others） need to sync this > Tuesday？ > > Thanks > Joyce > >> On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote: >> >> On Fri, 19 Jul 2024 17:48:26 +0800 >> Joyce Qi joyce.qi@linaro.org wrote: >> >>> Hi Jonathan，all， >>> >>> Do we need a call next Tuesday to talk about the below RAS series >>> topics？ >>> >> Hi Joyce, >> >> The RAS series is continuing but nothing urgent to pick up this week >> and most of the relevant people have clashes tomorrow. >> >> On the NUMA handling, Mike has posted patches which look pretty good >> to me so that one may well be resolved. >> >> So from our side I don't think there is anything urgent to discuss. >> >> Thanks, >> >> Jonathan >> >> >> >>> Thanks >>> Joyce >>> >>> >>>> On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>>> >>>> Hi Joyce, >>>> >>>> Unfortunately I have a clash on Tuesday and I think James is >>>> currently on leave (via an autoresponder message). >>>> >>>> Let me check if we have urgent issues - perhaps we can schedule a >>>> call at a different time. >>>> >>>> We are working with Mauro Carvalho Chehab who recently rejoined >>>> Huawei and is a long time RAS expert + kernel maintainer to try >>>> and unblock the RAS series mentioned below. >>>> >>>> For vCPU HP the kernel patches still haven't been picked up, but I >>>> can poke the relevant maintainers via email. It needs to go >>>> through the ARM64 main kernel tree I think and Will and Catalin >>>> have not yet replied. >>>> >>>> The NUMA CXL memory topic hit an not particularly amusing issue. >>>> Mike Rapoport has decided it's time to finally unify the x86 >>>> handling with everyone else's. He's doing the work which is good, >>>> but on the downside it stalls ARM support for now and the >>>> unification is proving tricky it seems. >>>> >>>> Jonathan >>>> >>>> >>>> On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org >>>> wrote: >>>> >>>>> Hi Jonathan，all， >>>>> >>>>> Would like to sync next Tuesday for some topics（CXL memory or >>>>> others）？ >>>>> >>>>> Thanks >>>>> Joyce >>>>> >>>>> >>>>>> On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>>>>> >>>>>> Hi Joyce, >>>>>> >>>>>> Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up. >>>>>> >>>>>> A few status reports probably make sense but no need for a call. >>>>>> >>>>>> 1) vCPU HP kernel - will rebase in next day or two and send >>>>>> out. The tags for ACPI and (most of) GIC changes came in just >>>>>> too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. >>>>>> Arch specific version being rebased etc. >>>>>> >>>>>> 2) >>>>>> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-inf >>>>>> o-v5-rc3-v5-0-850f9bfb97a8@os.amperecomputing.com/ >>>>>> The series: [PATCH v5 0/2] Adds additional information to ARM >>>>>> RAS errors is still in need of review and is blocking a key >>>>>> feature for us (CPU isolation in rasadaemon) >>>>>> >>>>>> I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. >>>>>> One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days. >>>>>> >>>>>> Jonathan >>>>>> >>>>>> >>>>>> -----Original Message----- >>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>> Sent: 26 May 2024 14:39 >>>>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>>>> Cc: James Morse via Linaro-open-discussions >>>>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>>>> salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com >>>>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>> >>>>>> Hi Jonathan，all， >>>>>> >>>>>> Any topics need to sync next Tuesday？ >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>> >>>>>> >>>>>>> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: >>>>>>> >>>>>>> On Mon, 22 Apr 2024 18:39:54 +0800 Joyce Qi >>>>>>> joyce.qi@linaro.org wrote: >>>>>>> >>>>>>>> Hi Jonathan，all， >>>>>>>> >>>>>>>> Do you have any topic to sync tomorrow >>>>>>> >>>>>>> Hi Joyce, >>>>>>> >>>>>>> Two things from me but maybe email is sufficient if we have >>>>>>> nothing else on the agenda: >>>>>>> >>>>>>> 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors >>>>>>> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-in >>>>>>> fo-v5-r c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t >>>>>>> >>>>>>> Originally one of our patch sets (Ampere currently pushing it), >>>>>>> but has been stalled a long time. There is a need for input >>>>>>> from Tony Luck at Intel but also probably needs some ARM review to push it forwards. >>>>>>> >>>>>>> 2) From Salil and I, a general update on vCPU HP seems in order. >>>>>>> >>>>>>> For kernel side of things, Russell got the _STA change in last >>>>>>> cycle, but then Rafael (ACPI maintainer) backed it out again to >>>>>>> replace it with a more general solution (avoiding an esoteric >>>>>>> bug) That released things a little and got us past one of the more fundamental aspects. >>>>>>> >>>>>>> We have been going in circles somewhat since then and ended up >>>>>>> with a solution that looks much more like some early proposals but 'hopefully' >>>>>>> having been through the process it will be acceptable. >>>>>>> >>>>>>> Rafael has confirmed the basic form of the ACPI patches now >>>>>>> seems fine to him but will review in detail over next week or >>>>>>> so. Obviously we are tight to the end of the cycle, so this may not quite make it. >>>>>>> If it doesn't, should be in a good shape for early in 6.11. >>>>>>> >>>>>>> I think there are some missing acks for some of the smaller >>>>>>> patches + we need agreement from arm64 arch maintainers to the >>>>>>> new >>>>>>> arch_register_cpu() call. We'd been so focused on major parts >>>>>>> of series minor changes to the gicv3 driver etc haven't picked up the tags they should have. >>>>>>> >>>>>>> Thanks due to Rafael for quick feedback over last few weeks and >>>>>>> Russell, Miguel, James, Jean-Phillipe, various Huawei folk over >>>>>>> time and others who have been involved in this epic saga. Not >>>>>>> there yet but maybe the finish line is in sight. >>>>>>> >>>>>>> Which will unlock the QEMU side of things. >>>>>>> >>>>>>> Jonathan >>>>>>> >>>>>>> >>>>>>> >>>>>>> >>>>>>>> >>>>>>>> Thanks >>>>>>>> Joyce >>>>>>>> >>>>>>>> >>>>>>>>> 在 2024年3月25日，22:27，Jonathan Cameron >>>>>>>>> Jonathan.Cameron@huawei.com >>>>>>>>> 写道： >>>>>>>>> >>>>>>>>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>>>>>>>> >>>>>>>>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>>>>>>>> >>>>>>>>> Thanks, >>>>>>>>> >>>>>>>>> Jonathan >>>>>>>>> >>>>>>>>> -----Original Message----- >>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>> Sent: 22 March 2024 14:18 >>>>>>>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>>>>>>> Cc: James Morse via Linaro-open-discussions >>>>>>>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>>>>>>> salil.mehta@huawei.com >>>>>>>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>> >>>>>>>>> Hi Jonathan, all, >>>>>>>>> >>>>>>>>> Do we want to sync CPU HP or other topics next Tuesday? >>>>>>>>> >>>>>>>>> Thanks >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>>> 在 2024年2月23日，19:59，Jonathan Cameron >>>>>>>>>> Jonathan.Cameron@Huawei.com >>>>>>>>>> 写道： >>>>>>>>>> >>>>>>>>>> On Thu, 22 Feb 2024 18:00:22 +0800 Joyce Qi >>>>>>>>>> joyce.qi@linaro.org wrote: >>>>>>>>>> >>>>>>>>>>> Hi Jonathan，all, >>>>>>>>>>> >>>>>>>>>>> Do we have something to sync next Tuesday? >>>>>>>>>> Hi Joyce >>>>>>>>>> >>>>>>>>>> Currently nothing. >>>>>>>>>> >>>>>>>>>> There has been some activity on CPU HP. >>>>>>>>>> Rafael has proposed alternative approach for _STA handling. >>>>>>>>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>>>>>>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreach >>>>>>>>>> er/ >>>>>>>>>> >>>>>>>>>> Hopefully we can get the testing needed (related to device >>>>>>>>>> surprise removal as those paths are touched) and slip this >>>>>>>>>> in for next merge window. We want this in ASAP so we find >>>>>>>>>> out about any broken firmware in the wild. >>>>>>>>>> >>>>>>>>>> Not a useful meeting topic though! >>>>>>>>>> >>>>>>>>>> There are a few things we are working on that will want >>>>>>>>>> discussion but we aren't ready for next week (and need to >>>>>>>>>> give warning to get the right other people there!) >>>>>>>>>> >>>>>>>>>> Jonathan >>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>> Thanks >>>>>>>>>>> Joyce >>>>>>>>>>> >>>>>>>>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>>>>>> >>>>>>>>>>>> Hi Jonathan，all, >>>>>>>>>>>> >>>>>>>>>>>> Happy New Year to all! >>>>>>>>>>>> Do we have any topic to sync next week? >>>>>>>>>>>> >>>>>>>>>>>> BR >>>>>>>>>>>> Joyce >>>>>>>>>>>> >>>>>>>>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>>>>>>> >>>>>>>>>>>>> Hi Jonathan，all >>>>>>>>>>>>> >>>>>>>>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>>>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>>>>>>>> >>>>>>>>>>>>> Thanks >>>>>>>>>>>>> Joyce >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>> >>>>>>>>>>>>>> 在 >>>>>>>>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>>>>>>>> org 写道： >>>>>>>>>>>>>> >>>>>>>>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>>> >>>>>>>>>>>>>> To subscribe or unsubscribe via email, send a message >>>>>>>>>>>>>> with subject or body 'help' to >>>>>>>>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>>>>>>>> >>>>>>>>>>>>>> You can reach the person managing the list at >>>>>>>>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>>>>>>>> >>>>>>>>>>>>>> When replying, please edit your Subject line so it is >>>>>>>>>>>>>> more specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>>>>>>>> >>>>>>>>>>>>>> Today's Topics: >>>>>>>>>>>>>> >>>>>>>>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual >>>>>>>>>>>>>> CPU Hotplug kernel support (Joyce Qi) >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> -------------------------------------------------------- >>>>>>>>>>>>>> ------- >>>>>>>>>>>>>> --- >>>>>>>>>>>>>> ---- >>>>>>>>>>>>>> >>>>>>>>>>>>>> Message: 1 >>>>>>>>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>>>>>>>> >>>>>>>>>>>>>> Hi all， >>>>>>>>>>>>>> >>>>>>>>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>>>>>>>> >>>>>>>>>>>>>> Thanks:) >>>>>>>>>>>>>> Joyce >>>>>>>>>>>>>> >>>>>>>>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta >>>>>>>>>>>>>>> salil.mehta@huawei.com 写道： >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Hi Joyce, >>>>>>>>>>>>>>> I have do not have any. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>>> Salil >>>>>>>>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; >>>>>>>>>>>>>>> Salil Mehta <salil.mehta@huawei.com >>>>>>>>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>>>>>> Lorenzo Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>>>>>> kernel support >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Hi all， >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>>> Joyce >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -----Original Message----- >>>>>>>>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; >>>>>>>>>>>>>>> Joyce Qi <joyce.qi@linaro.org >>>>>>>>>>>>>>> mailto:joyce.qi@linaro.org>; Lorenzo Pieralisi >>>>>>>>>>>>>>> <lorenzo.pieralisi@linaro.org >>>>>>>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>>>>>>> karl.heubaum@oracle.com >>>>>>>>>>>>>>> mailto:karl.heubaum@oracle.com; >>>>>>>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] >>>>>>>>>>>>>>> Regarding non-RFC patch-set of Virtual CPU Hotplug >>>>>>>>>>>>>>> kernel support >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Also, I have a plan to add an integration test CI in >>>>>>>>>>>>>>> kata community for Vcpu Hotplug on Arm. There we can do >>>>>>>>>>>>>>> more tests integrating with k8s. To do the test, I need >>>>>>>>>>>>>>> a stable git link of Kernel and Qemu including the >>>>>>>>>>>>>>> latest change, thus, I can clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> I don't think I properly replied to this. I think what >>>>>>>>>>>>>>> you want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> For my tree, that will be: >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> which will be regularly kept updated and rebased >>>>>>>>>>>>>>> against the mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Great! That's what I want. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Does that satisfy your need? >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Thanks >>>>>>>>>>>>>>> Jianyong >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> Thanks. >>>>>>>>>>>>>>> >>>>>>>>>>>>>>> -- >>>>>>>>>>>>>>> RMK's Patch system: >>>>>>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> ------------------------------ >>>>>>>>>>>>>> >>>>>>>>>>>>>> Subject: Digest Footer >>>>>>>>>>>>>> >>>>>>>>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>>>>>> To unsubscribe send an email to >>>>>>>>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>>>>>>>> >>>>>>>>>>>>>> >>>>>>>>>>>>>> ------------------------------ >>>>>>>>>>>>>> >>>>>>>>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>>>>>>> ******************************************************* >>>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >

Thanks Joyce

Hi James，

On 21 Oct 2024, at 20:50, James Morse james.morse@arm.com wrote:

Hi Joyce,

On 21/10/2024 11:00, Joyce Qi via Linaro-open-discussions wrote:

...

Thanks a lot for the detailed description and document sharing. I have uploaded the MPAM materials to the LOD Confluence.

https://linaro.atlassian.net/wiki/spaces/LOD/overview%EF%BF%BC

@James,

Are you available to join tomorrow’s LoD meeting for the MPAM topics ? If not ,can you advise your availability time?

Sure - if we're covering the flush-by-pa range thing I'll try and get the folk who looked at the PSCI proposal along.

Appreciated for the supporting，we will talk about the two topics tomorrow.

Thanks,

James

Thanks Joyce

Hi Jonathan，

Would you like to continue the MPAM， Flush by PA range Designs or any other topics during tomorrow’s LOD meeting？

Thanks Joyce

On 24 Oct 2024, at 00:14, James Morse james.morse@arm.com wrote:

Hi guys,

(CC: +Dave Martin)

On 10/21/24 15:01, Joyce Qi wrote:

...

...

On 21 Oct 2024, at 20:50, James Morse james.morse@arm.com wrote: On 21/10/2024 11:00, Joyce Qi via Linaro-open-discussions wrote:

...

Thanks a lot for the detailed description and document sharing. I have uploaded the MPAM materials to the LOD Confluence.

https://linaro.atlassian.net/wiki/spaces/LOD/overview%EF%BF%BC

...

...

...

Are you available to join tomorrow’s LoD meeting for the MPAM topics ?

The code already published for something like the intPARTID proposal is here: https://git.gitlab.arm.com/linux-arm/linux-dm/-/commits/mpam/partid-pmg-rema...

The aim was to keep it within the MPAM driver, initially based on some static configuration to prove its useful before making it more dynamic, probably a mount option.

Thanks,

James

Hi Jonathan,

On 21/10/2024 09:54, Jonathan Cameron via Linaro-open-discussions wrote:

I'm checking the availability of people for the MPAM topic.

In the meantime one other topic might be good to discuss briefly.

Flush by PA range - need for a mini subsystem...

This is needed for CXL and we've jumped through various possible ways to handle it.

1. PSCI call (not currently in spec) Doesn't work well as 'only' solution as some hardware provides direct memory mapped IO interfaces for this.

I have the code for this - but have been unable to (re)test it. I really want to kill the stop_machine() 'rendevzevous' in the kernel cases, but equally the firmware people don't want to do it in firmware!

2. ACPI wrapping of both PSCI call and memory mapped. Unfortunately you can wrap SCMI (via a PCC channel) but not (as I understand it SMCCC) so I don't think an ACPI wrapper in general works.

I thought the opposite - the FFH "Operation Region" allows SMC calls, and linux supports this via acpi_ffh_address_space_arch_handler(). Its restricted to a few SMC ranges - but we should be able to do this in the 'standard' space as I bet a hypervisor is going to have to emulate this one day in the future... (not touching CXL hardware directly - but providing an encryption key to unlock a device)

I was thinking of a device that is all firmware in the DSDT that has _DSM to do this - and a driver to poke it in linux.

3. Current option: Face up to the fact we need to just do this kernel first with drivers for the various hardware that surfaces. We aren't particularly far into a design yet so maybe email is fine for now if people are busy.

For this I'm thinking a really small subsystem / class. Lots of design options but one might be

1. Driver registers with class and provides PA ranges for which it needs to be notified (simpler option is it gets notified of everything) Class is there for userspace to be able to see what is involved...
2. Notification chain follows similar design to mmu notifiers, just on physical addresses and global rather than tied to each mm.

Requirements for design:

1. Multiple entities may need to be told to flush for a given range (interleaving etc may be going on).
2. Flush should be range. Any hardware that doesn't support range will need to flush everything.

This needs advertising to the OS to avoid repeatedly flushing everything!

3. Support rich set of flushes. Drivers may have to upgrade the lighter ones to what they support (cache coherency protocols all allow this so should be technically fine to do rather than reject the flush)

Is this just clean/clean+invalidated, or is there another option?

Other things I've forgotten?

Asynchronous completion? We may want to do some other work while the hardware does its thing.

In particular I'd like any insights people have on plausible hardware designs that this approach might not work for.

When thrashing out the PSCI spec proposal, the "don't build that" corner case we had was "system caches" after the PoC that lack a mechanism to clean+invalidate while running, and can't be power-cycled to reset them if they share a power-domain with something important. Even by-VA clean+invalidate would be insufficient on such a platform...

(Is it plausible? I hope not ...)

A sticky corner is how to know that all drivers for architecturally necessary flushes are present. Easy to check if there is one covering the range, not so easy to check if one instance of an interleaves solution is missing. We can probably solve this at the individual driver level, but it's ugly.

Wouldn't this 'just' need to cover the CXL.Mem decoders address windows?

Thanks,

James

On Mon, 21 Oct 2024 16:19:41 +0100 Jonathan Cameron via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org wrote:

On Mon, 21 Oct 2024 13:53:31 +0100 James Morse james.morse@arm.com wrote:

...

Hi Jonathan,

On 21/10/2024 09:54, Jonathan Cameron via Linaro-open-discussions wrote:

...

I'm checking the availability of people for the MPAM topic.

In the meantime one other topic might be good to discuss briefly.

...

Flush by PA range - need for a mini subsystem...

This is needed for CXL and we've jumped through various possible ways to handle it.

1. PSCI call (not currently in spec) Doesn't work well as 'only' solution as some hardware provides direct memory mapped IO interfaces for this.

I have the code for this - but have been unable to (re)test it. I really want to kill the stop_machine() 'rendevzevous' in the kernel cases, but equally the firmware people don't want to do it in firmware!

I'm kind of assuming that anyone using this solution will soon learn it is a bad idea. Want it to be 'possible' but maybe we want for someone to show up actually asking for it.

...

...

2. ACPI wrapping of both PSCI call and memory mapped. Unfortunately you can wrap SCMI (via a PCC channel) but not (as I understand it SMCCC) so I don't think an ACPI wrapper in general works.

I thought the opposite - the FFH "Operation Region" allows SMC calls, and linux supports this via acpi_ffh_address_space_arch_handler(). Its restricted to a few SMC ranges - but we should be able to do this in the 'standard' space as I bet a hypervisor is going to have to emulate this one day in the future... (not touching CXL hardware directly - but providing an encryption key to unlock a device)

Hmm. Seems I'll need to dig further as I'd missed that delight. However, doesn't that leave us stuck if stop_machine() needs to run in kernel. I'm hoping there isn't AML to do that!

Because I never trust anything to work until I have have some code I hacked this into QEMU this morning and subject to the small issue that the kernel needs SMCCC 1.2 for this and qemu does SMCCC 1.0 it works as expected. (I bodged the version number and crossed my fingers ;)

Worth a quick discussion on whether the stop machine option is doable via this path though.

Jonathan

...

I was thinking of a device that is all firmware in the DSDT that has _DSM to do this - and a driver to poke it in linux.

Ok. Sounds like this might be possible, but I'm not sure we want to be in a world were we get to write more AML.

Anyhow, seems this one is back on the table, though maybe one part of a solution not the whole thing.

...

...

3. Current option: Face up to the fact we need to just do this kernel first with drivers for the various hardware that surfaces. We aren't particularly far into a design yet so maybe email is fine for now if people are busy.

...

For this I'm thinking a really small subsystem / class. Lots of design options but one might be

1. Driver registers with class and provides PA ranges for which it needs to be notified (simpler option is it gets notified of everything) Class is there for userspace to be able to see what is involved...
2. Notification chain follows similar design to mmu notifiers, just on physical addresses and global rather than tied to each mm.

Requirements for design:

1. Multiple entities may need to be told to flush for a given range (interleaving etc may be going on).
2. Flush should be range. Any hardware that doesn't support range will need to flush everything.

This needs advertising to the OS to avoid repeatedly flushing everything!

Agreed, it's details I'd expect to provide via the class - effectively a performance hint to let the ultimate software triggering this know how painful it might be.

Though flush all is what x86 does so people will be used to it ;)

...

...

3. Support rich set of flushes. Drivers may have to upgrade the lighter ones to what they support (cache coherency protocols all allow this so should be technically fine to do rather than reject the flush)

Is this just clean/clean+invalidated, or is there another option?

In most general sense invalidate without clean. Whether it is useful is a whole different question. Just single clean+invalidate should work for functionality I think. The others are performance optimizations.

...

...

Other things I've forgotten?

Asynchronous completion? We may want to do some other work while the hardware does its thing.

Maybe. Initially synchronous should cover the use cases I know about. However we should indeed keep it in mind.

...

...

In particular I'd like any insights people have on plausible hardware designs that this approach might not work for.

When thrashing out the PSCI spec proposal, the "don't build that" corner case we had was "system caches" after the PoC that lack a mechanism to clean+invalidate while running, and can't be power-cycled to reset them if they share a power-domain with something important. Even by-VA clean+invalidate would be insufficient on such a platform...

(Is it plausible? I hope not ...)

If they build that then they don't get CXL hotplug. Maybe some guidance notes on silly things not to do would be good if anyone fancies writing them.

...

...

A sticky corner is how to know that all drivers for architecturally necessary flushes are present. Easy to check if there is one covering the range, not so easy to check if one instance of an interleaves solution is missing. We can probably solve this at the individual driver level, but it's ugly.

Wouldn't this 'just' need to cover the CXL.Mem decoders address windows?

If you mean the area we need to flush - yes, an HDM decoder or a DCD extent (typically much smaller). I meant the other way around. It is easy to bound what to flush but not in general to know which hardware (and how much hardware) you need to poke to do it.

To avoid the races that need the stop_machine() you need to be sure a cacheline won't move around between these entities that are responsible for ensuring a global flush of the line happens, but different cachelines in the range you care about can be handled by different entities. It might be doable to wrap all that up in careful device definition by pretending everyone involved is one device even if they are highly distributed in the system. That way the discovering everyone has shown up is pushed to individual drivers and made an impdef problem.

Jonathan

...

Thanks,

James

Hi Joyce,

No problem - its just the way the timezones work! I hadn't reached the the emails about this in my inbox, so joined anyway.

Thanks,

James

On 8/27/24 14:03, Joyce Qi wrote:

Hi James,

Thanks a lot for joining today’s meeting! Sorry I haven't received Jonathan or other people's feedback to cancel the meeting, and this afternoon I have been visiting customers and forgot to cancel today’s meeting.

I will gather the request earlier next time.

Thanks Joyce

...

On 26 Aug 2024, at 07:52, Joyce Qi joyce.qi@linaro.org wrote:

Hi Jonathan，all，

Not sure if you have anything（RAS or others） need to sync this Tuesday？

Thanks Joyce

...

On 22 Jul 2024, at 23:22, Jonathan Cameron jonathan.cameron@huawei.com wrote:

On Fri, 19 Jul 2024 17:48:26 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Do we need a call next Tuesday to talk about the below RAS series topics？

Hi Joyce,

The RAS series is continuing but nothing urgent to pick up this week and most of the relevant people have clashes tomorrow.

On the NUMA handling, Mike has posted patches which look pretty good to me so that one may well be resolved.

So from our side I don't think there is anything urgent to discuss.

Thanks,

Jonathan

...

Thanks Joyce

...

On 21 Jun 2024, at 16:30, Jonathan Cameron jonathan.cameron@huawei.com wrote:

Hi Joyce,

Unfortunately I have a clash on Tuesday and I think James is currently on leave (via an autoresponder message).

Let me check if we have urgent issues - perhaps we can schedule a call at a different time.

We are working with Mauro Carvalho Chehab who recently rejoined Huawei and is a long time RAS expert + kernel maintainer to try and unblock the RAS series mentioned below.

For vCPU HP the kernel patches still haven't been picked up, but I can poke the relevant maintainers via email. It needs to go through the ARM64 main kernel tree I think and Will and Catalin have not yet replied.

The NUMA CXL memory topic hit an not particularly amusing issue. Mike Rapoport has decided it's time to finally unify the x86 handling with everyone else's. He's doing the work which is good, but on the downside it stalls ARM support for now and the unification is proving tricky it seems.

Jonathan

On Fri, 21 Jun 2024 13:22:40 +0800 Joyce Qi joyce.qi@linaro.org wrote:

...

Hi Jonathan，all，

Would like to sync next Tuesday for some topics（CXL memory or others）？

Thanks Joyce

> On 28 May 2024, at 16:45, Jonathan Cameron jonathan.cameron@huawei.com wrote: > > Hi Joyce, > > Thanks for the reminder. Yesterday was a holiday in the UK so I only just picked this up. > > A few status reports probably make sense but no need for a call. > > 1) vCPU HP kernel - will rebase in next day or two and send out. The tags for ACPI and (most of) GIC changes came in just > too late for last cyc.e If James can take a look great if not really only needs Will or Catalin to look > at it from an arch point of view. QEMU in progress - arch agnostic bit has a lot of good review and adoption by other arch. > Arch specific version being rebased etc. > > 2) https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-rc3-v5-... > The series: [PATCH v5 0/2] Adds additional information to ARM RAS errors > is still in need of review and is blocking a key feature for us (CPU isolation in rasadaemon) > > I think we need to make better use of this meeting. I'll try and line up some useful topics for next month. > One possible is some numa fixes for CXL memory etc that I'll post an RFC for in the next few days. > > Jonathan > > > -----Original Message----- > From: Joyce Qi joyce.qi@linaro.org > Sent: 26 May 2024 14:39 > To: Jonathan Cameron jonathan.cameron@huawei.com > Cc: James Morse via Linaro-open-discussions linaro-open-discussions@op-lists.linaro.org; Salil Mehta salil.mehta@huawei.com; Shiju Jose shiju.jose@huawei.com > Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 > > Hi Jonathan，all， > > Any topics need to sync next Tuesday？ > > Thanks > Joyce > > > >> On 22 Apr 2024, at 19:07, Jonathan Cameron jonathan.cameron@huawei.com wrote: >> >> On Mon, 22 Apr 2024 18:39:54 +0800 >> Joyce Qi joyce.qi@linaro.org wrote: >> >>> Hi Jonathan，all， >>> >>> Do you have any topic to sync tomorrow >> >> Hi Joyce, >> >> Two things from me but maybe email is sufficient if we have nothing >> else on the agenda: >> >> 1) [PATCH v5 0/2] Adds additional information to ARM RAS errors >> https://lore.kernel.org/all/20240321-b4-arm-ras-error-vendor-info-v5-r >> c3-v5-0-850f9bfb97a8@os.amperecomputing.com/#t >> >> Originally one of our patch sets (Ampere currently pushing it), but >> has been stalled a long time. There is a need for input from Tony Luck >> at Intel but also probably needs some ARM review to push it forwards. >> >> 2) From Salil and I, a general update on vCPU HP seems in order. >> >> For kernel side of things, Russell got the _STA change in last cycle, >> but then Rafael (ACPI maintainer) backed it out again to replace it >> with a more general solution (avoiding an esoteric bug) That released >> things a little and got us past one of the more fundamental aspects. >> >> We have been going in circles somewhat since then and ended up with a >> solution that looks much more like some early proposals but 'hopefully' >> having been through the process it will be acceptable. >> >> Rafael has confirmed the basic form of the ACPI patches now seems fine >> to him but will review in detail over next week or so. Obviously we >> are tight to the end of the cycle, so this may not quite make it. >> If it doesn't, should be in a good shape for early in 6.11. >> >> I think there are some missing acks for some of the smaller patches + >> we need agreement from arm64 arch maintainers to the new >> arch_register_cpu() call. We'd been so focused on major parts of >> series minor changes to the gicv3 driver etc haven't picked up the tags they should have. >> >> Thanks due to Rafael for quick feedback over last few weeks and >> Russell, Miguel, James, Jean-Phillipe, various Huawei folk over time >> and others who have been involved in this epic saga. Not there yet >> but maybe the finish line is in sight. >> >> Which will unlock the QEMU side of things. >> >> Jonathan >> >> >> >> >>> >>> Thanks >>> Joyce >>> >>> >>>> 在 2024年3月25日，22:27，Jonathan Cameron Jonathan.Cameron@huawei.com >>>> 写道： >>>> >>>> I don't think it makes sense at this point. May well make more sense to discuss in a few weeks though. >>>> >>>> I'm not aware of anything else that makes sense to discuss, so probably cancel the meeting this time. >>>> >>>> Thanks, >>>> >>>> Jonathan >>>> >>>> -----Original Message----- >>>> From: Joyce Qi joyce.qi@linaro.org >>>> Sent: 22 March 2024 14:18 >>>> To: Jonathan Cameron jonathan.cameron@huawei.com >>>> Cc: James Morse via Linaro-open-discussions >>>> linaro-open-discussions@op-lists.linaro.org; Salil Mehta >>>> salil.mehta@huawei.com >>>> Subject: Re: Linaro-open-discussions Digest, Vol 38, Issue 14 >>>> >>>> Hi Jonathan, all, >>>> >>>> Do we want to sync CPU HP or other topics next Tuesday? >>>> >>>> Thanks >>>> Joyce >>>> >>>>> 在 2024年2月23日，19:59，Jonathan Cameron Jonathan.Cameron@Huawei.com >>>>> 写道： >>>>> >>>>> On Thu, 22 Feb 2024 18:00:22 +0800 >>>>> Joyce Qi joyce.qi@linaro.org wrote: >>>>> >>>>>> Hi Jonathan，all, >>>>>> >>>>>> Do we have something to sync next Tuesday? >>>>> Hi Joyce >>>>> >>>>> Currently nothing. >>>>> >>>>> There has been some activity on CPU HP. >>>>> Rafael has proposed alternative approach for _STA handling. >>>>> Seems fine to me (+ I've tested it) but more eyes always good! >>>>> https://lore.kernel.org/linux-acpi/4562925.LvFx2qVVIh@kreacher/ >>>>> >>>>> Hopefully we can get the testing needed (related to device surprise >>>>> removal as those paths are touched) and slip this in for next merge >>>>> window. We want this in ASAP so we find out about any broken >>>>> firmware in the wild. >>>>> >>>>> Not a useful meeting topic though! >>>>> >>>>> There are a few things we are working on that will want discussion >>>>> but we aren't ready for next week (and need to give warning to get >>>>> the right other people there!) >>>>> >>>>> Jonathan >>>>> >>>>>> >>>>>> Thanks >>>>>> Joyce >>>>>> >>>>>>> 在 2024年1月17日，15:44，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>> >>>>>>> Hi Jonathan，all, >>>>>>> >>>>>>> Happy New Year to all! >>>>>>> Do we have any topic to sync next week? >>>>>>> >>>>>>> BR >>>>>>> Joyce >>>>>>> >>>>>>>> 在 2023年12月20日，19:42，Joyce Qi joyce.qi@linaro.org 写道： >>>>>>>> >>>>>>>> Hi Jonathan，all >>>>>>>> >>>>>>>> Do you have any topic to sync next Tuesday？ >>>>>>>> Since it is Christmas next week，we can put off the meeting after the holiday whenever you want to sync. >>>>>>>> >>>>>>>> Thanks >>>>>>>> Joyce >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>>> 在 >>>>>>>>> 2023年11月29日，08:00，linaro-open-discussions-request@op-lists.linaro. >>>>>>>>> org 写道： >>>>>>>>> >>>>>>>>> Send Linaro-open-discussions mailing list submissions to >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> >>>>>>>>> To subscribe or unsubscribe via email, send a message with >>>>>>>>> subject or body 'help' to >>>>>>>>> linaro-open-discussions-request@op-lists.linaro.org >>>>>>>>> >>>>>>>>> You can reach the person managing the list at >>>>>>>>> linaro-open-discussions-owner@op-lists.linaro.org >>>>>>>>> >>>>>>>>> When replying, please edit your Subject line so it is more >>>>>>>>> specific than "Re: Contents of Linaro-open-discussions digest..." >>>>>>>>> >>>>>>>>> Today's Topics: >>>>>>>>> >>>>>>>>> 1. Re: [Request] Regarding non-RFC patch-set of Virtual CPU >>>>>>>>> Hotplug kernel support (Joyce Qi) >>>>>>>>> >>>>>>>>> >>>>>>>>> --------------------------------------------------------------- >>>>>>>>> --- >>>>>>>>> ---- >>>>>>>>> >>>>>>>>> Message: 1 >>>>>>>>> Date: Tue, 28 Nov 2023 08:44:14 +0800 >>>>>>>>> From: Joyce Qi joyce.qi@linaro.org >>>>>>>>> Subject: [Linaro-open-discussions] Re: [Request] Regarding non-RFC >>>>>>>>> patch-set of Virtual CPU Hotplug kernel support >>>>>>>>> To: Salil Mehta salil.mehta@huawei.com >>>>>>>>> Cc: Jianyong Wu Jianyong.Wu@arm.com, Russell King >>>>>>>>> linux@armlinux.org.uk, James Morse James.Morse@arm.com, >>>>>>>>> "linaro-open-discussions@op-lists.linaro.org" >>>>>>>>> linaro-open-discussions@op-lists.linaro.org, Lorenzo Pieralisi >>>>>>>>> lorenzo.pieralisi@linaro.org, "karl.heubaum@oracle.com" >>>>>>>>> karl.heubaum@oracle.com, "darren@os.amperecomputing.com" >>>>>>>>> darren@os.amperecomputing.com, "ilkka@os.amperecomputing.com" >>>>>>>>> ilkka@os.amperecomputing.com, "miguel.luis@oracle.com" >>>>>>>>> miguel.luis@oracle.com, "vishnu@os.amperecomputing.com" >>>>>>>>> vishnu@os.amperecomputing.com, Linuxarm linuxarm@huawei.com, >>>>>>>>> "salil.mehta@opnsrc.net" salil.mehta@opnsrc.net >>>>>>>>> Message-ID: 764691EE-1EA6-4245-8D92-434B0CD3BBC4@linaro.org >>>>>>>>> Content-Type: text/plain; charset=gb2312 >>>>>>>>> >>>>>>>>> Hi all， >>>>>>>>> >>>>>>>>> Will cancel today’s meeting since the “Regarding non-RFC patch-set of Virtual CPU Hotplug kernel support” can be continually discussed in the LOD mail list. >>>>>>>>> >>>>>>>>> Thanks:) >>>>>>>>> Joyce >>>>>>>>> >>>>>>>>>> 在 2023年11月27日，17:50，Salil Mehta salil.mehta@huawei.com 写道： >>>>>>>>>> >>>>>>>>>> Hi Joyce, >>>>>>>>>> I have do not have any. >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Salil >>>>>>>>>> From: Joyce Qi <joyce.qi@linaro.org >>>>>>>>>> mailto:joyce.qi@linaro.org> >>>>>>>>>> Sent: Sunday, November 26, 2023 11:51 AM >>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>> Cc: Russell King <linux@armlinux.org.uk >>>>>>>>>> mailto:linux@armlinux.org.uk>; James Morse >>>>>>>>>> <James.Morse@arm.com mailto:James.Morse@arm.com>; Salil >>>>>>>>>> Mehta <salil.mehta@huawei.com >>>>>>>>>> mailto:salil.mehta@huawei.com>; >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Lorenzo >>>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>> mailto:ilkka@os.amperecomputing.com; miguel.luis@oracle.com >>>>>>>>>> mailto:miguel.luis@oracle.com; vishnu@os.amperecomputing.com >>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net; >>>>>>>>>> Jonathan Cameron <jonathan.cameron@huawei.com >>>>>>>>>> mailto:jonathan.cameron@huawei.com> >>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>> >>>>>>>>>> Hi all， >>>>>>>>>> >>>>>>>>>> Do we have topic to sync next Tuesday？ >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Joyce >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> 在 2023年11月22日，09:22，Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> 写道： >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> -----Original Message----- >>>>>>>>>> From: Russell King <linux@armlinux.org.uk >>>>>>>>>> mailto:linux@armlinux.org.uk> >>>>>>>>>> Sent: 2023年11月21日 17:45 >>>>>>>>>> To: Jianyong Wu <Jianyong.Wu@arm.com >>>>>>>>>> mailto:Jianyong.Wu@arm.com> >>>>>>>>>> Cc: James Morse <James.Morse@arm.com >>>>>>>>>> mailto:James.Morse@arm.com>; salil.mehta@huawei.com >>>>>>>>>> mailto:salil.mehta@huawei.com; >>>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>>> mailto:linaro-open-discussions@op-lists.linaro.org; Joyce Qi >>>>>>>>>> <joyce.qi@linaro.org mailto:joyce.qi@linaro.org>; Lorenzo >>>>>>>>>> Pieralisi <lorenzo.pieralisi@linaro.org >>>>>>>>>> mailto:lorenzo.pieralisi@linaro.org>; >>>>>>>>>> karl.heubaum@oracle.com mailto:karl.heubaum@oracle.com; >>>>>>>>>> darren@os.amperecomputing.com >>>>>>>>>> mailto:darren@os.amperecomputing.com; >>>>>>>>>> ilkka@os.amperecomputing.com >>>>>>>>>> mailto:ilkka@os.amperecomputing.com; >>>>>>>>>> miguel.luis@oracle.com mailto:miguel.luis@oracle.com; >>>>>>>>>> vishnu@os.amperecomputing.com >>>>>>>>>> mailto:vishnu@os.amperecomputing.com; Linuxarm >>>>>>>>>> <linuxarm@huawei.com mailto:linuxarm@huawei.com>; >>>>>>>>>> salil.mehta@opnsrc.net mailto:salil.mehta@opnsrc.net >>>>>>>>>> Subject: Re: [Linaro-open-discussions] Re: [Request] Regarding >>>>>>>>>> non-RFC patch-set of Virtual CPU Hotplug kernel support >>>>>>>>>> >>>>>>>>>> On Fri, Nov 03, 2023 at 09:41:36AM +0000, Jianyong Wu wrote: >>>>>>>>>> >>>>>>>>>> Also, I have a plan to add an integration test CI in kata >>>>>>>>>> community for Vcpu Hotplug on Arm. There we can do more tests >>>>>>>>>> integrating with k8s. To do the test, I need a stable git link >>>>>>>>>> of Kernel and Qemu including the latest change, thus, I can >>>>>>>>>> clone the code from a fixed source in each test. It's very helpful if you guys could aid. >>>>>>>>>> >>>>>>>>>> I don't think I properly replied to this. I think what you >>>>>>>>>> want is not a "stable" git tree, but a branch that you can pull that always contains the latest code. >>>>>>>>>> >>>>>>>>>> For my tree, that will be: >>>>>>>>>> >>>>>>>>>> git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>> http://git.armlinux.org.uk/~rmk/linux-arm.git >>>>>>>>>> aarch64/hotplug-vcpu/head >>>>>>>>>> >>>>>>>>>> which will be regularly kept updated and rebased against the >>>>>>>>>> mainline kernel. It may sometimes be between releases rather than based on -rc or final kernels. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Great! That's what I want. >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Does that satisfy your need? >>>>>>>>>> >>>>>>>>>> Yes. Thanks Russell. It saves me lots of work. >>>>>>>>>> >>>>>>>>>> Thanks >>>>>>>>>> Jianyong >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> Thanks. >>>>>>>>>> >>>>>>>>>> -- >>>>>>>>>> RMK's Patch system: >>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>> https://www.armlinux.org.uk/developer/patches/ >>>>>>>>>> FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last! >>>>>>>>>> IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. >>>>>>>>> >>>>>>>>> >>>>>>>>> ------------------------------ >>>>>>>>> >>>>>>>>> Subject: Digest Footer >>>>>>>>> >>>>>>>>> Linaro-open-discussions mailing list -- >>>>>>>>> linaro-open-discussions@op-lists.linaro.org >>>>>>>>> To unsubscribe send an email to >>>>>>>>> linaro-open-discussions-leave@op-lists.linaro.org >>>>>>>>> >>>>>>>>> >>>>>>>>> ------------------------------ >>>>>>>>> >>>>>>>>> End of Linaro-open-discussions Digest, Vol 38, Issue 14 >>>>>>>>> ******************************************************* >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>> >> >