From: Borislav Petkov <bp@alien8.de>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Dave Hansen <dave.hansen@intel.com>,
Vignesh Balasubramanian <vigbalas@amd.com>,
linux-kernel@vger.kernel.org, linux-toolchains@vger.kernel.org,
mpe@ellerman.id.au, 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,
jinisusan.george@amd.com, matz@suse.de, binutils@sourceware.org,
jhb@freebsd.org, felix.willgerodt@intel.com
Subject: Re: [PATCH 1/1] x86/elf: Add a new .note section containing Xfeatures information to x86 core files
Date: Sat, 16 Mar 2024 11:29:21 +0100 [thread overview]
Message-ID: <20240316102921.GAZfV0gQ9Sn_hYcKhW@fat_crate.local> (raw)
In-Reply-To: <87cyrvjbpb.ffs@tglx>
On Sat, Mar 16, 2024 at 12:51:28AM +0100, Thomas Gleixner wrote:
> Anything which is not enumerated in CPUID does not exist in
> XSTATE. Period and end of story.
But why not have a simple buffer definition which doesn't need CPUID?
Also, doing the CPUID thing would need extending the gdb remote protocol
as explained here:
https://lore.kernel.org/r/971d21b7-0309-439e-91b6-234f84da959d@FreeBSD.org
The simple buffer layout won't.
So regardless of where hw is going, I think a simple buffer definition
is always better.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
next prev parent reply other threads:[~2024-03-16 10:30 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-14 11:23 [PATCH 0/1] Add XSAVE layout description to Core files for debuggers to support varying XSAVE layouts Vignesh Balasubramanian
2024-03-14 11:23 ` [PATCH 1/1] x86/elf: Add a new .note section containing Xfeatures information to x86 core files Vignesh Balasubramanian
2024-03-14 15:37 ` Dave Hansen
2024-03-14 16:08 ` Borislav Petkov
2024-03-14 16:19 ` Dave Hansen
2024-03-14 16:29 ` Borislav Petkov
2024-03-14 16:39 ` Dave Hansen
2024-03-26 9:59 ` Balasubrmanian, Vignesh
2024-03-15 23:51 ` Thomas Gleixner
2024-03-16 10:29 ` Borislav Petkov [this message]
2024-03-14 16:45 ` John Baldwin
2024-03-14 17:10 ` Dave Hansen
2024-03-14 17:36 ` John Baldwin
2024-03-14 17:05 ` John Baldwin
2024-03-14 16:13 ` Kees Cook
2024-03-26 10:06 ` Balasubrmanian, Vignesh
2024-03-14 22:13 ` Michael Ellerman
2024-03-26 10:09 ` Balasubrmanian, Vignesh
2024-03-15 9:59 ` kernel test robot
2024-03-15 12:59 ` kernel test robot
2024-03-14 16:25 ` [PATCH 0/1] Add XSAVE layout description to Core files for debuggers to support varying XSAVE layouts Willgerodt, Felix
2024-03-14 16:33 ` Borislav Petkov
2024-03-15 8:43 ` Willgerodt, Felix
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