linux-kernel - Re: [RESEND PATCH v18 1/2] ACPI: APEI: send SIGBUS to current task if synchronous memory error not recovered

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Message-ID: <CAJZ5v0ikkHeopHQb2Gxr4GnW3rqtowpWu_DEa5ahLK6f2nHH9Q@mail.gmail.com>
Date: Tue, 15 Jul 2025 14:40:41 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
Cc: "Rafael J. Wysocki" <rafael@...nel.org>, Shuai Xue <xueshuai@...ux.alibaba.com>, 
	Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, 
	Hanjun Guo <guohanjun@...wei.com>, "Luck, Tony" <tony.luck@...el.com>, linux-mm@...ck.org, 
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org, 
	linux-edac@...r.kernel.org, x86@...nel.org, justin.he@....com, 
	ardb@...nel.org, ying.huang@...ux.alibaba.com, ashish.kalra@....com, 
	baolin.wang@...ux.alibaba.com, tglx@...utronix.de, 
	dave.hansen@...ux.intel.com, lenb@...nel.org, hpa@...or.com, 
	robert.moore@...el.com, lvying6@...wei.com, xiexiuqi@...wei.com, 
	zhuo.song@...ux.alibaba.com, sudeep.holla@....com, lpieralisi@...nel.org, 
	linux-acpi@...r.kernel.org, yazen.ghannam@....com, mark.rutland@....com, 
	mingo@...hat.com, robin.murphy@....com, Jonathan.Cameron@...wei.com, 
	bp@...en8.de, linux-arm-kernel@...ts.infradead.org, 
	wangkefeng.wang@...wei.com, tanxiaofei@...wei.com, mawupeng1@...wei.com, 
	linmiaohe@...wei.com, naoya.horiguchi@....com, james.morse@....com, 
	tongtiangen@...wei.com, gregkh@...uxfoundation.org, jarkko@...nel.org
Subject: Re: [RESEND PATCH v18 1/2] ACPI: APEI: send SIGBUS to current task if
 synchronous memory error not recovered

On Tue, Jul 15, 2025 at 2:06 PM Mauro Carvalho Chehab
<mchehab+huawei@...nel.org> wrote:
>
> Em Mon, 14 Jul 2025 19:30:19 +0200
> "Rafael J. Wysocki" <rafael@...nel.org> escreveu:
>
> > Hi,
> >
> > On Mon, Jul 14, 2025 at 1:54 PM Shuai Xue <xueshuai@...ux.alibaba.com> wrote:
> > >
> > > 在 2025/7/1 21:56, Rafael J. Wysocki 写道:
> > > > On Tue, Jul 1, 2025 at 1:00 PM Shuai Xue <xueshuai@...ux.alibaba.com> wrote:
> > > >>
> > > >>   >在 2025/4/28 23:23, Will Deacon 写道:
> > > >>   >> On Fri, Apr 25, 2025 at 09:10:09AM +0800, Shuai Xue wrote:
> > > >>   >>> 在 2025/4/25 09:00, Hanjun Guo 写道:
> > > >>   >>>> Call force_sig(SIGBUS) directly in ghes_do_proc() is not my favourite,
> > > >>   >>>> but I can bear that, please add
> > > >>   >>>>
> > > >>   >>>> Reviewed-by: Hanjun Guo <guohanjun@...wei.com>
> > > >>   >>>>
> > > >>   >>>> Thanks
> > > >>   >>>> Hanjun
> > > >>   >>>
> > > >>   >>> Thanks. Hanjun.
> > > >>   >>>
> > > >>   >>> @Rafael, @Catalin,
> > > >>   >>>
> > > >>   >>> Both patch 1 and 2 have reviewed-by tag from the arm64 ACPI
> > > >> maintainers, Hanjun,
> > > >>   >>> now. Are you happpy to pick and queue this patch set to acpi tree
> > > >> or arm tree?
> > > >>   >>
> > > >>   >> Since this primarily touches drivers/acpi/apei/ghes.c, I think it should
> > > >>   >> go via the ACPI tree and not the arm64 one.
> > > >>   >>
> > > >>   >> Will
> > > >>   >
> > > >>   >Hi, Will,
> > > >>   >
> > > >>   >Thank you for your confirmation :)
> > > >>   >
> > > >>   >@Rafael, do you have more comments on this patch set?
> > > >>   >
> > > >>   >Thanks you.
> > > >>   >
> > > >>   >Best Regards,
> > > >>   >Shuai
> > > >>
> > > >> Hi, all,
> > > >>
> > > >> Gentle ping.
> > > >>
> > > >> Does ACPI or APEI tree still active? Looking forward to any response.
> > > >
> > > > For APEI changes, you need an ACK from one of the reviewers listed in
> > > > the MAINTAINERS entry for APEI.
> > > >
> > > > Thanks!
> > >
> > > Hi, Rafael
> > >
> > > Sorry, I missed your email which goes in span (:
> > >
> > > ARM maintain @Catalin points that:
> > >
> > >  > James Morse is listed as reviewer of the ACPI APEI code but he's busy
> > >  > with resctrl/MPAM. Adding Lorenzo, Sudeep and Hanjun as arm64 ACPI
> > >  > maintainers, hopefully they can help.
> > >
> > > And Hanjun explictly gived his Reviewed-by tag in this thread, is that
> > > happy for you for merge?
> >
> > Not really.
> >
> > I need an ACK or R-by from a reviewer listed in the APEI entry in MAINTAINERS.
> >
> > If James Morse is not able to fill that role (and AFAICS he's not been
> > for quite some time now), I'd expect someone else to step up.

Hi Mauro,

> Rafael,
>
> If you want, I can step-up to help with APEI review. Besides my work
> with RAS/EDAC in the past, I'm doing some work those days adding
> APEI injection in QEMU those days (currently focused on ARM error
> injection via SEA and GPIO).

Thank you!

OK, let me send a MAINTAINERS update with a list of new APEI reviewers.