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Fri, 15 Mar 2024 09:13:12 +1100 (AEDT) From: Michael Ellerman To: Vignesh Balasubramanian , linux-kernel@vger.kernel.org, linux-toolchains@vger.kernel.org Cc: npiggin@gmail.com, christophe.leroy@csgroup.eu, aneesh.kumar@kernel.org, naveen.n.rao@linux.ibm.com, ebiederm@xmission.com, keescook@chromium.org, x86@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-mm@kvack.org, bpetkov@amd.com, jinisusan.george@amd.com, matz@suse.de, binutils@sourceware.org, jhb@FreeBSD.org, felix.willgerodt@intel.com, Vignesh Balasubramanian Subject: Re: [PATCH 1/1] x86/elf: Add a new .note section containing Xfeatures information to x86 core files In-Reply-To: <20240314112359.50713-2-vigbalas@amd.com> References: <20240314112359.50713-1-vigbalas@amd.com> <20240314112359.50713-2-vigbalas@amd.com> Date: Fri, 15 Mar 2024 09:13:10 +1100 Message-ID: <87o7bg31jd.fsf@mail.lhotse> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Queue-Id: 545481C0003 X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: 4rf5dskc9o78ujt7egwgpra5s6ca4xbu X-HE-Tag: 1710454397-930290 X-HE-Meta: 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 d2+tnC4g 03vlmY5itenHXigsQ72DHKwTbgcvbCZ2berykFJB09DnugpQJSb1nAdTV5I6RF+4E++WnxGdtijhUGoT8XWOw7xD6HBy4n4PT/d90VYIackqxlUgmIboSyU3mR4imIHxeFhF9hhQj6H2aeZQno+kwJvwqij1dutOm3Raolx4fEsvYotIA4U4wR61Vgg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi Vignesh, Vignesh Balasubramanian 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 > Signed-off-by: Jini Susan George > Signed-off-by: Vignesh Balasubramanian > --- > 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