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SubjectRe: Candidate Linux ABI for Intel AMX and hypothetical new related features
On Wed, Mar 31, 2021 at 6:54 PM Borislav Petkov <bp@alien8.de> wrote:
>
> On Wed, Mar 31, 2021 at 06:28:27PM -0400, Len Brown wrote:
> > dynamic XCR0 breaks the installed base, I thought we had established
> > that.
>
> We should do a clear cut and have legacy stuff which has its legacy
> expectations on the XSTATE layout and not touch those at all.
>
> And then all new apps which will use these new APIs can go and request
> whatever fancy new state constellations we support. Including how they
> want their signals handled, etc.
>
> Fat states like avx512, amx etc will be off by default and apps
> explicitly requesting those, can get them.
>
> That's it.

100% agreement from me! (does anybody disagree?)

thanks,
Len Brown, Intel Open Source Technology Center

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