October 2020 - Linaro-open-discussions

by Ulf Hansson

Hi all, In the Linux kernel v5.6, we introduced the basic support for PSCI OS-initiated mode. Linaro is still working on evolving the support, step by step. Additionally, we are helping some of our members with corresponding SoC deployment, which is planned to continue for a while. Basically, the PSCI OS-initiated mode allows Linux to be in charge of idlestate decisions for a group of CPUs (aka CPU cluster), which may share idlestates. In some cases this enables improvements in regards to performance/energy, but could also be used to help manage resources that may share power-/clock-domains with CPUs. Moving forward, we are now planning to extend the corresponding PSCI implementation in the Trusted Firmware-A (TF-A) with the OS-initiated mode, together with our members and member engineers. Currently, only the default PSCI platform-coordinated mode is supported by the TF-A. We seek for additional collaborations and input to the new project! Please get in touch, if you have any feedback and/or find this project interesting. Finally, a kickoff meeting is about to be scheduled and held within a few weeks. Let me know if you want to join the discussions. Kind regards Ulf Hansson, Linaro Kernel Working Group

2 years, 7 months

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Re: [Linaro-open-discussions] Nov 4th - topics list proposal

by Hanjun Guo

Hi Lorenzo, On 2020/10/22 1:26, Lorenzo Pieralisi via Linaro-open-discussions wrote: > Hi all, > > according to the topics posted previously on the list, I suggest we > tackle the following ones on Nov 4th (all topics posted are interesting > but some require some time to elaborate following KVM forum next week): > > - Hanjun/Shameer - IORT reserved memory support > - Zhangfei/Wangzhou - SVA support for SMMU stall mode > - Hanjun - Uncore DVFS and how to support it (needs spec update, either > ARM specs or ACPI) > > On MPAM - I don't think we require a topic for status update - technical > discussions are already on ML and I don't think there is much to be > done to speed up upstreaming other than following the usual process. > > Please let me know your thoughts. Is fine to me to remove the MPAM topic. Thanks Hanjun

2 years, 7 months

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Re: [Linaro-open-discussions] Nov 4th - topics list proposal

by Vincent Guittot

On Wed, 21 Oct 2020 at 19:26, Lorenzo Pieralisi via Linaro-open-discussions <linaro-open-discussions(a)op-lists.linaro.org> wrote: > > Hi all, > > according to the topics posted previously on the list, I suggest we > tackle the following ones on Nov 4th (all topics posted are interesting > but some require some time to elaborate following KVM forum next week): > > - Hanjun/Shameer - IORT reserved memory support > - Zhangfei/Wangzhou - SVA support for SMMU stall mode > - Hanjun - Uncore DVFS and how to support it (needs spec update, either > ARM specs or ACPI) > > On MPAM - I don't think we require a topic for status update - technical > discussions are already on ML and I don't think there is much to be > done to speed up upstreaming other than following the usual process. > > Please let me know your thoughts. Your proposal looks good to me Limiting to 3 topics for an hour meeting is probably a good thing to allow discussion > > Thank you very much. > > Lorenzo > -- > Linaro-open-discussions mailing list > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > https://op-lists.linaro.org/mailman/listinfo/linaro-open-discussions

2 years, 7 months

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Re: [Linaro-open-discussions] Nov 4th - topics list proposal

by Mike Holmes

I have updated the agenda to reflect the topics discussion https://collaborate.linaro.org/display/LOD/2020-11-04+Proposed+Meeting+Meet… On Thu, Oct 22, 2020 at 6:45 AM Hanjun Guo via Linaro-open-discussions < linaro-open-discussions(a)op-lists.linaro.org> wrote: > Hi Lorenzo, > > On 2020/10/22 1:26, Lorenzo Pieralisi via Linaro-open-discussions wrote: > > Hi all, > > > > according to the topics posted previously on the list, I suggest we > > tackle the following ones on Nov 4th (all topics posted are interesting > > but some require some time to elaborate following KVM forum next week): > > > > - Hanjun/Shameer - IORT reserved memory support > > - Zhangfei/Wangzhou - SVA support for SMMU stall mode > > - Hanjun - Uncore DVFS and how to support it (needs spec update, either > > ARM specs or ACPI) > > > > On MPAM - I don't think we require a topic for status update - technical > > discussions are already on ML and I don't think there is much to be > > done to speed up upstreaming other than following the usual process. > > > > Please let me know your thoughts. > > Is fine to me to remove the MPAM topic. > > Thanks > Hanjun > -- > Linaro-open-discussions mailing list > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > https://op-lists.linaro.org/mailman/listinfo/linaro-open-discussions > -- Mike Holmes | Director, Foundation Technologies, Linaro Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> "Work should be fun and collaborative, the rest follows"

2 years, 7 months

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Fwd: Linaro OP-TEE Contributions meeting October 2020

by Ruchika Gupta

Hi, For those who are interested, we have a LOC (Linaro OP-TEE Contribution) Monthly Meeting scheduled for October 28th @ 16.00 (UTC+1). Regards, Ruchika ---------- Forwarded message --------- From: Joakim Bech via OP-TEE <op-tee(a)lists.trustedfirmware.org> Date: Tue, 20 Oct 2020 at 17:13 Subject: Linaro OP-TEE Contributions meeting October 2020 To: <op-tee(a)lists.trustedfirmware.org>, Ilias Apalodimas < ilias.apalodimas(a)linaro.org> Hi, LOC monthly meeting is planned to take place October 28th @ 16.00 (UTC+1). Connection details can be found in the meeting notes document (link below). Ilias and Jens will give an introduction to the secure partitions and StandaloneMM parts in OP-TEE. Other than that feel free to suggest topics you'd like to discuss (by replying to this email or write it directly in the meeting notes). Note that it's UTC+1 since we're moving to winter time in Sweden in a couple of days from now (previous LOC meetings have been UTC+2). Meeting details: --------------- Date/time: Wednesday October 28th(a)16.00 (UTC+1) https://everytimezone.com/s/9bfdb976 Invitation/connection details: In the meeting notes Meeting notes: http://bit.ly/loc-notes Project page: https://www.linaro.org/projects/#LOC Regards, Joakim on behalf of the Linaro OP-TEE team

2 years, 7 months

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Nov 4th - topics list proposal

by Lorenzo Pieralisi

Hi all, according to the topics posted previously on the list, I suggest we tackle the following ones on Nov 4th (all topics posted are interesting but some require some time to elaborate following KVM forum next week): - Hanjun/Shameer - IORT reserved memory support - Zhangfei/Wangzhou - SVA support for SMMU stall mode - Hanjun - Uncore DVFS and how to support it (needs spec update, either ARM specs or ACPI) On MPAM - I don't think we require a topic for status update - technical discussions are already on ML and I don't think there is much to be done to speed up upstreaming other than following the usual process. Please let me know your thoughts. Thank you very much. Lorenzo

2 years, 7 months

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Fwd: SCMI Status Meeting - Thursday October 22nd

by Vincent Guittot

Hi All, For those who could be interested, The public meeting about SCMI server in TEE will happen Thursday Oct 22. Regards, Vincent ---------- Forwarded message --------- From: Vincent Guittot <vincent.guittot(a)linaro.org> Date: Thu, 15 Oct 2020 at 09:16 Subject: SCMI Status Meeting - Thursday October 22nd To: <scmi-dev(a)op-lists.linaro.org> Hi All, The next status meeting for the SCMI server in TEE project will happen on Thursday Oct 22. All details can be found on here: https://collaborate.linaro.org/display/SCMI. If there are specific topics that you want to add to the agenda, you can raise them on the mailing list. Regards, Vincent

2 years, 7 months

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Re: [Linaro-open-discussions] Linux kernel sync up

by Hanjun Guo

Hi Mike, Not from my side, so feel free to reorder the priority of my topics. Thanks Hanjun On 2020/10/13 15:08, Mike Holmes via Linaro-open-discussions wrote: > Jammy, Hanjun, Jonathan, Zhangfei > > Is there any priority order to the agenda items you have added, there may > be more than we can tackle in one meeting. > > > - Matteo Carlini > <https://collaborate.linaro.org/display/~matteo.carlini@arm.com> - Generic > Initiator Proximity Domains in ACPI > - Hanjun/Shameer - IORT reserved memory support > - Hanjun - MPAM status and anything we can do to speed up the progress > - Hanjun - Uncore DVFS and how to support it (needs spec update, either > ARM specs or ACPI) > - Jonathan - IOMMU performance work (may need Will Deacon involved from > Google) > - Jonathan - vCPU hotplug follow up after the KVM forum session > - Zhangfei/Wangzhou - SVA support for SMMU stall mode > > > > On Mon, Oct 12, 2020 at 2:13 AM Jammy Zhou via Linaro-open-discussions < > linaro-open-discussions(a)op-lists.linaro.org> wrote: > >> Hi All, >> >> We're planning some Linux kernel sync up on Nov. 4th with tentative agenda >> below: >> >> >> https://collaborate.linaro.org/display/LOD/2020-11-04+Proposed+Meeting+Meet… >> >> You're welcome to raise any other topics and have some pre-meeting >> discussions on this list. >> >> Regards, >> Jammy >> -- >> Linaro-open-discussions mailing list >> https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home >> https://op-lists.linaro.org/mailman/listinfo/linaro-open-discussions >> > >

2 years, 7 months

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Re: [Linaro-open-discussions] Linux kernel sync up

by Mike Holmes

Jammy, Hanjun, Jonathan, Zhangfei Is there any priority order to the agenda items you have added, there may be more than we can tackle in one meeting. - Matteo Carlini <https://collaborate.linaro.org/display/~matteo.carlini@arm.com> - Generic Initiator Proximity Domains in ACPI - Hanjun/Shameer - IORT reserved memory support - Hanjun - MPAM status and anything we can do to speed up the progress - Hanjun - Uncore DVFS and how to support it (needs spec update, either ARM specs or ACPI) - Jonathan - IOMMU performance work (may need Will Deacon involved from Google) - Jonathan - vCPU hotplug follow up after the KVM forum session - Zhangfei/Wangzhou - SVA support for SMMU stall mode On Mon, Oct 12, 2020 at 2:13 AM Jammy Zhou via Linaro-open-discussions < linaro-open-discussions(a)op-lists.linaro.org> wrote: > Hi All, > > We're planning some Linux kernel sync up on Nov. 4th with tentative agenda > below: > > > https://collaborate.linaro.org/display/LOD/2020-11-04+Proposed+Meeting+Meet… > > You're welcome to raise any other topics and have some pre-meeting > discussions on this list. > > Regards, > Jammy > -- > Linaro-open-discussions mailing list > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > https://op-lists.linaro.org/mailman/listinfo/linaro-open-discussions > -- Mike Holmes | Director, Foundation Technologies, Linaro Mike.Holmes(a)linaro.org <mike.holmes(a)linaro.org> "Work should be fun and collaborative, the rest follows"

2 years, 7 months

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Linux kernel sync up

by Jammy Zhou

Hi All, We're planning some Linux kernel sync up on Nov. 4th with tentative agenda below: https://collaborate.linaro.org/display/LOD/2020-11-04+Proposed+Meeting+Meet… You're welcome to raise any other topics and have some pre-meeting discussions on this list. Regards, Jammy

2 years, 7 months

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Linaro-open-discussions October 2020