[PATCH 1/1] x86/elf: Add a new .note section containing Xfeatures information to x86 core files

[Borislav Petkov]

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