linux-kernel - Re: [PATCH v2 0/2] perf: arm64: Kernel support for Dwarf unwinding through SVE functions

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Message-ID: <20220604021404.GC53464@leoy-ThinkPad-X240s>
Date:   Sat, 4 Jun 2022 10:14:04 +0800
From:   Leo Yan <leo.yan@...aro.org>
To:     James Clark <james.clark@....com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-perf-users@...r.kernel.org, broonie@...nel.org,
        acme@...nel.org, german.gomez@....com, mathieu.poirier@...aro.org,
        john.garry@...wei.com, Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        Mark Rutland <mark.rutland@....com>, linux-doc@...r.kernel.org
Subject: Re: [PATCH v2 0/2] perf: arm64: Kernel support for Dwarf unwinding
 through SVE functions

On Sat, Jun 04, 2022 at 10:07:21AM +0800, Leo Yan wrote:
> On Tue, May 17, 2022 at 11:07:41AM +0100, James Clark wrote:
> > Changes since v1:
> > 
> >   * Add Mark's review tag
> >   * Clarify in docs that it's the SVE register length
> >   * Split patchset into kernel side and Perf tool changes
> > 
> > When SVE registers are pushed onto the stack the VG register is required to
> > unwind because the stack offsets would vary by the SVE register width at the
> > time when the sample was taken.
> > 
> > These first two patches add support for sampling the VG register to the kernel
> > and the docs. There is another patchset to add support to userspace perf.
> 
> Hi Catalin, Will,
> 
> Since James is on vacation, just want to ping if you could pick up
> this two patches?  Mark.B has given review tags for this patch set.

Sorry, or the kernel patch should be via arm tree and the document patch
via Jonathan's tree?

> I did this is because there has another patch set in perf tool to
> enable SVE registsers [1], which is dependent on this patch set's
> merging.
> 
> Thanks,
> Leo
> 
> [1] https://lore.kernel.org/lkml/20220525154114.718321-1-james.clark@arm.com/