April 2021 - Linaro-open-discussions

Re: [Linaro-open-discussions] LOD meeting agenda for March 22nd

by Jonathan Cameron

On Mon, 15 Mar 2021 16:42:34 +0000 Lorenzo Pieralisi via Linaro-open-discussions <linaro-open-discussions(a)op-lists.linaro.org> wrote: > On Mon, Mar 15, 2021 at 01:00:19AM +0000, Jammy Zhou via Linaro-open-discussions wrote: > > Hi all, > > > > We're going to have the LOD meeting in one week, currently we don't > > have any topic proposed yet. Please let me know if you have something > > to discuss. > > I would be glad to have a follow-up with Jonathan on CXL expansion memory > on arm64 if possible, hopefully I can read up in the meanwhile to get up > to speed on the matter. I'm always happy to talk on this topic :) There is a related discussion around the (code-first) proposal to generalize GI usage to enable some CXL use cases that we might also be able to have a useful discussion about: https://lore.kernel.org/linux-acpi/CAPcyv4gmd_cygXK0PpGkXmJLC3_ctEpRvpi5P-Q… As there are some US folks who are interested in this topic (but super busy), can we do a straw poll of whether any of them can make a call on Monday? If not go for a more China/Europe friendly time? We had a few more topics brewing, but I'm not sure they will be in a state to discuss next week (or to give anyone else time to think about them in advance). Obviously good to touch on any updates to older topics as well if anyone has any! Jonathan > > Lorenzo

2 years, 12 months

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Regression of synchronous external aborts occur in user-mode

by tanxiaofei

Hi All, We are facing regression on our hardware platform, Kunpeng9xx series, after the commit 8fcc4ae6faf8 ("arm64: acpi: Make apei_claim_sea() synchronize with APEI's irq work") was applied and this commit was merged into the mainline v5.8-rc1. The regression occur with the user-mode SEA, synchronous external abort occur in user space, and with our customer delivered firmware which reports the ARM processor error record for the SEA, to let kernel record the error. After the analysis it was identified that the reason of this issue is that do_sea() return directly for the user-mode SEA if the apei_claim_sea() handled the ARM processor error record, but the APEI GHES driver does not effectively process the ARM processor error record for the cache errors, by doing the memory failure handling. Currently the ghes_handle_memory_failure() is called only for the memory error record. The following patch fix the regression by doing the memory failure handling for the ARM processor error reported for the user-mode SEA. https://lore.kernel.org/linux-acpi/94a38a33-a949-3cce-d617-e1476912596e@hua… V5 patch was send-out after reviews by over 4 months. Can ARM folks please acknowledge the patch and perhaps the need for a meeting to explain the issue and resolution +quickly resolve any open questions? Thanks Xiaofei

2 years, 12 months

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Re: [Linaro-open-discussions] Meeting Agenda for April 26th

by Jammy Zhou

Hi All, The slides and recording have been published in the collaborate page: https://collaborate.linaro.org/display/LOD/2021-4-26+Meeting+Meeting+notes Regards, Jammy On Fri, 23 Apr 2021 at 17:23, Lorenzo Pieralisi via Linaro-open-discussions <linaro-open-discussions(a)op-lists.linaro.org> wrote: > On Fri, Apr 23, 2021 at 08:20:59AM +0000, Vincent Guittot via > Linaro-open-discussions wrote: > > Hi Song, > > > > On Fri, 23 Apr 2021 at 10:17, Song Bao Hua (Barry Song) > > <song.bao.hua(a)hisilicon.com> wrote: > > > > > > Hi Tammy, > > > > > > The time is perfect to me. Thanks! > > > > > > > > > > > > As usual, I have prepared some slides as attached. Could you please > put the slides and the below link > > > > > > > https://lore.kernel.org/lkml/20210420001844.9116-1-song.bao.hua@hisilicon.c… > > > > > > to > > > > > > > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > > > > > > > > > > > > I will appreciate very much if Vincent, Dietmar, Valentine and other > scheduler guys can join the meeting. > > > > I have planned to attend the call > > Thank you Vincent - Dietmar and Valentin will join too, talk to you > all on Monday. > > Thanks, > Lorenzo > > > Regards, > > Vincent > > > > > > > > > > > > > > Best Regards, > > > > > > Barry > > > > > > > > > > > > From: Jammy Zhou [mailto:jammy.zhou@linaro.org] > > > Sent: Tuesday, April 20, 2021 12:18 AM > > > To: Song Bao Hua (Barry Song) <song.bao.hua(a)hisilicon.com> > > > Cc: linaro-open-discussions(a)op-lists.linaro.org; Tim Chen < > tim.c.chen(a)linux.intel.com> > > > Subject: Re: [Linaro-open-discussions] Meeting Agenda for April 26th > > > > > > > > > > > > Hi Barry, > > > > > > > > > > > > On Mon, 19 Apr 2021 at 19:11, Song Bao Hua (Barry Song) < > song.bao.hua(a)hisilicon.com> wrote: > > > > > > > > > > > > > -----Original Message----- > > > > From: Linaro-open-discussions > > > > [mailto:linaro-open-discussions-bounces@op-lists.linaro.org] On > Behalf Of > > > > Jammy Zhou via Linaro-open-discussions > > > > Sent: Monday, April 19, 2021 10:44 PM > > > > To: Lorenzo Pieralisi via Linaro-open-discussions > > > > <linaro-open-discussions(a)op-lists.linaro.org> > > > > Subject: [Linaro-open-discussions] Meeting Agenda for April 26th > > > > > > > > Hi All, > > > > > > > > We're going to have the next meeting on April 26th (next Monday). > Please > > > > let me know if you have some topics for discussion. > > > > > > I am going to send cluster-scheduler RFC v6 tomorrow or the day after > > > tomorrow. There will be some major changes in wake_affine path. On the > > > other hand, I believe the patchset has also some other differences with > > > the one we discussed in the last meeting. > > > > > > Could you please consider adding this topic to the list? > > > > > > > > > > > > Sure, I just added it to the list > > > > > > > > > > > > > > > On the other hand, it seems we get people from UK, NZ, US, Portland, > > > China? So I am not sure what's the best time to get it started. What > > > about UTC 10:00AM? > > > > > > > > > > > > It is the planned time. Please let me know if we need to adjust it. > > > > > > > > > > > > Regards, > > > > > > Jammy > > > > > > > > > > > > > > > Thanks > > > Barry > > > > > > > > > > > Thanks, > > > > 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 > > -- > > 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 > -- > 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, 12 months

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Re: [Linaro-open-discussions] Meeting Agenda for April 26th

by Lorenzo Pieralisi

On Fri, Apr 23, 2021 at 08:20:59AM +0000, Vincent Guittot via Linaro-open-discussions wrote: > Hi Song, > > On Fri, 23 Apr 2021 at 10:17, Song Bao Hua (Barry Song) > <song.bao.hua(a)hisilicon.com> wrote: > > > > Hi Tammy, > > > > The time is perfect to me. Thanks! > > > > > > > > As usual, I have prepared some slides as attached. Could you please put the slides and the below link > > > > https://lore.kernel.org/lkml/20210420001844.9116-1-song.bao.hua@hisilicon.c… > > > > to > > > > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > > > > > > > > I will appreciate very much if Vincent, Dietmar, Valentine and other scheduler guys can join the meeting. > > I have planned to attend the call Thank you Vincent - Dietmar and Valentin will join too, talk to you all on Monday. Thanks, Lorenzo > Regards, > Vincent > > > > > > > > > Best Regards, > > > > Barry > > > > > > > > From: Jammy Zhou [mailto:jammy.zhou@linaro.org] > > Sent: Tuesday, April 20, 2021 12:18 AM > > To: Song Bao Hua (Barry Song) <song.bao.hua(a)hisilicon.com> > > Cc: linaro-open-discussions(a)op-lists.linaro.org; Tim Chen <tim.c.chen(a)linux.intel.com> > > Subject: Re: [Linaro-open-discussions] Meeting Agenda for April 26th > > > > > > > > Hi Barry, > > > > > > > > On Mon, 19 Apr 2021 at 19:11, Song Bao Hua (Barry Song) <song.bao.hua(a)hisilicon.com> wrote: > > > > > > > > > -----Original Message----- > > > From: Linaro-open-discussions > > > [mailto:linaro-open-discussions-bounces@op-lists.linaro.org] On Behalf Of > > > Jammy Zhou via Linaro-open-discussions > > > Sent: Monday, April 19, 2021 10:44 PM > > > To: Lorenzo Pieralisi via Linaro-open-discussions > > > <linaro-open-discussions(a)op-lists.linaro.org> > > > Subject: [Linaro-open-discussions] Meeting Agenda for April 26th > > > > > > Hi All, > > > > > > We're going to have the next meeting on April 26th (next Monday). Please > > > let me know if you have some topics for discussion. > > > > I am going to send cluster-scheduler RFC v6 tomorrow or the day after > > tomorrow. There will be some major changes in wake_affine path. On the > > other hand, I believe the patchset has also some other differences with > > the one we discussed in the last meeting. > > > > Could you please consider adding this topic to the list? > > > > > > > > Sure, I just added it to the list > > > > > > > > > > On the other hand, it seems we get people from UK, NZ, US, Portland, > > China? So I am not sure what's the best time to get it started. What > > about UTC 10:00AM? > > > > > > > > It is the planned time. Please let me know if we need to adjust it. > > > > > > > > Regards, > > > > Jammy > > > > > > > > > > Thanks > > Barry > > > > > > > > Thanks, > > > 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 > -- > 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

3 years

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Re: [Linaro-open-discussions] Meeting Agenda for April 26th

by Song Bao Hua (Barry Song)

> -----Original Message----- > From: Linaro-open-discussions > [mailto:linaro-open-discussions-bounces@op-lists.linaro.org] On Behalf Of > Jammy Zhou via Linaro-open-discussions > Sent: Monday, April 19, 2021 10:44 PM > To: Lorenzo Pieralisi via Linaro-open-discussions > <linaro-open-discussions(a)op-lists.linaro.org> > Subject: [Linaro-open-discussions] Meeting Agenda for April 26th > > Hi All, > > We're going to have the next meeting on April 26th (next Monday). Please > let me know if you have some topics for discussion. I am going to send cluster-scheduler RFC v6 tomorrow or the day after tomorrow. There will be some major changes in wake_affine path. On the other hand, I believe the patchset has also some other differences with the one we discussed in the last meeting. Could you please consider adding this topic to the list? On the other hand, it seems we get people from UK, NZ, US, Portland, China? So I am not sure what's the best time to get it started. What about UTC 10:00AM? Thanks Barry > > Thanks, > 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

3 years

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Meeting Agenda for April 26th

by Jammy Zhou

Hi All, We're going to have the next meeting on April 26th (next Monday). Please let me know if you have some topics for discussion. Thanks, Jammy

3 years

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Re: [Linaro-open-discussions] LOD meeting agenda for March 22nd

by Salil Mehta

Hello, Please find the requested slides containing *rough* QEMU boot time figures attached. I will further refine/update the slides with Firmware/Linux Guest related figures and will share later. Many thanks Salil > From: Linaro-open-discussions > [mailto:linaro-open-discussions-bounces@op-lists.linaro.org] On Behalf Of > Jammy Zhou via Linaro-open-discussions > Sent: Monday, March 22, 2021 12:38 PM > To: Vincent Guittot <vincent.guittot(a)linaro.org> > Cc: Lorenzo Pieralisi via Linaro-open-discussions > <linaro-open-discussions(a)op-lists.linaro.org>; Jon Masters > <jcm(a)jonmasters.org> > Subject: Re: [Linaro-open-discussions] LOD meeting agenda for March 22nd > > Hi All, > > The meeting notes are published in the collaborate page below (with > Jonathan's CXL slides and the recording). > > https://collaborate.linaro.org/display/LOD/2021-3-22+Meeting+Meeting+notes > > Regards, > Jammy > > On Thu, 18 Mar 2021 at 22:48, Vincent Guittot <vincent.guittot(a)linaro.org> > wrote: > > > On Thu, 18 Mar 2021 at 15:39, Jammy Zhou via Linaro-open-discussions > > <linaro-open-discussions(a)op-lists.linaro.org> wrote: > > > > > > Hmm, it looks like I forgot to add one event in the calendar. It has been > > > added by Vincent just a moment ago. Thanks! > > > > Yeah, I noticed that the meeting didn't appear in the agenda so I > > figured out to add it > > > > > > > > On Thu, 18 Mar 2021 at 22:11, Jonathan Cameron < > > jonathan.cameron(a)huawei.com> > > > wrote: > > > > > > > Ah, I'd missed that as not in the calendar at the bottom of the page > > yet. > > > > > > > > That works fine for me. > > > > > > > > Jonathan > > > > > > > > -----Original Message----- > > > > From: Lorenzo Pieralisi [mailto:lorenzo.pieralisi@arm.com] > > > > Sent: 18 March 2021 12:28 > > > > To: Jonathan Cameron <jonathan.cameron(a)huawei.com> > > > > Cc: Lorenzo Pieralisi via Linaro-open-discussions < > > > > linaro-open-discussions(a)op-lists.linaro.org>; Jammy Zhou < > > > > jammy.zhou(a)linaro.org>; Jon Masters <jcm(a)jonmasters.org> > > > > Subject: Re: [Linaro-open-discussions] LOD meeting agenda for March > > 22nd > > > > > > > > On Wed, Mar 17, 2021 at 05:17:05PM +0000, Jonathan Cameron wrote: > > > > > > > > [...] > > > > > > > > > > I would also take this opportunity to get your (and Salil's) > > > > > > feedback on the virtual CPU hotplug implementation with PSCI if you > > > > > > had time to think about what we discussed last time. > > > > > > > > > > That should be fine to talk about / keep up momentum on. > > > > > > > > > > Have we actually picked a time slot? > > > > > > > > > > I have a strangely empty day on Monday, so feel free to suggest one. > > > > > As Jon hasn't replied, lets go for a time that isn't too unpleasant > > > > > for those based in China. > > > > > > > > I am happy to keep schedule as advertised in: > > > > > > > > > > https://collaborate.linaro.org/display/LOD/Linaro+Open+Discussions+Home > > > > > > > > namely 10AM GMT. Is it fine for everyone ? > > > > > > > > Thanks, > > > > 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 > > > -- > 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

3 years

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RMR spec //(was)RE: Suggested Agenda / timings for Monday 7 Dec call

by Shameerali Kolothum Thodi

Hi Lorenzo, > > -----Original Message----- > > From: Linaro-open-discussions > > [mailto:linaro-open-discussions-bounces@op-lists.linaro.org] On Behalf Of > > Lorenzo Pieralisi via Linaro-open-discussions > > Sent: 10 December 2020 09:13 > > To: Jonathan Cameron <jonathan.cameron(a)huawei.com> > > Cc: linaro-open-discussions(a)op-lists.linaro.org > > Subject: Re: [Linaro-open-discussions] Suggested Agenda / timings for > Monday > > 7 Dec call > > > > On Thu, Dec 03, 2020 at 01:40:55PM +0000, Jonathan Cameron wrote: > > > > [...] > > > > > RMR related topics - follow up on last call: Lorenzo Pieralisi (ARM) - 5 mins Just a quick one on updated RMR spec publication. I see a revision E.a here, https://developer.arm.com/documentation/den0049/latest/ This seems to have addressed all the things we discussed. Is this a final one officially? If yes, I couldn't understand why the RMR node flags are at an offset 8, compared to other nodes where the node specific data normally starts at offset 16. Could you please check and let me know. Thanks, Shameer

3 years

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Linaro-open-discussions April 2021