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Message-ID: <87o7bg31jd.fsf@mail.lhotse>
Date: Fri, 15 Mar 2024 09:13:10 +1100
From: Michael Ellerman <mpe@...erman.id.au>
To: Vignesh Balasubramanian <vigbalas@....com>,
linux-kernel@...r.kernel.org, linux-toolchains@...r.kernel.org
Cc: npiggin@...il.com, christophe.leroy@...roup.eu, aneesh.kumar@...nel.org,
naveen.n.rao@...ux.ibm.com, ebiederm@...ssion.com, keescook@...omium.org,
x86@...nel.org, linuxppc-dev@...ts.ozlabs.org, linux-mm@...ck.org,
bpetkov@....com, jinisusan.george@....com, matz@...e.de,
binutils@...rceware.org, jhb@...eBSD.org, felix.willgerodt@...el.com,
Vignesh Balasubramanian <vigbalas@....com>
Subject: Re: [PATCH 1/1] x86/elf: Add a new .note section containing
Xfeatures information to x86 core files
Hi Vignesh,
Vignesh Balasubramanian <vigbalas@....com> writes:
> Add a new .note section containing type, size, offset and flags of
> every xfeature that is present.
>
> This information will be used by the debuggers to understand the XSAVE
> layout of the machine where the core file is dumped, and to read XSAVE
> registers, especially during cross-platform debugging.
>
> Co-developed-by: Jini Susan George <jinisusan.george@....com>
> Signed-off-by: Jini Susan George <jinisusan.george@....com>
> Signed-off-by: Vignesh Balasubramanian <vigbalas@....com>
> ---
> arch/Kconfig | 9 +++
> arch/powerpc/Kconfig | 1 +
> arch/powerpc/include/asm/elf.h | 2 -
> arch/x86/Kconfig | 1 +
> arch/x86/include/asm/elf.h | 7 +++
> arch/x86/kernel/fpu/xstate.c | 101 +++++++++++++++++++++++++++++++++
> include/linux/elf.h | 2 +-
> include/uapi/linux/elf.h | 1 +
> 8 files changed, 121 insertions(+), 3 deletions(-)
IMHO you should split the changes to replace ARCH_HAVE_EXTRA_ELF_NOTES
with CONFIG_ARCH_HAVE_EXTRA_ELF_NOTES into a lead-up patch.
cheers
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