RE: [PATCH] [X86]: Fix zen6 AVX512BMM cpuid check.

AMD General

Hi Haochen,

> -----Original Message-----
> From: Jiang, Haochen <[email protected]>
> Sent: 21 August 2026 08:50
> To: H.J. Lu <[email protected]>; Kumar, Venkataramanan
> <[email protected]>
> Cc: Sharma, Dipesh <[email protected]>; [email protected];
> Liu, Hongtao <[email protected]>; [email protected];
> [email protected]; [email protected]
> Subject: RE: [PATCH] [X86]: Fix zen6 AVX512BMM cpuid check.
>
> Caution: This message originated from an External Source. Use proper
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>
>
> > From: H.J. Lu <[email protected]>
> > Sent: Friday, August 21, 2026 5:14 AM
> >
> > Please fix
> >
> > /* Sub leaf (%eax == 0x21) */
> > #define bit_AVX512BMM   ( 1<<23 )
> >
> > in cpuid.h.
> >
>
> Agreed. Although it will not lead to functionality issue, but please maintain it
> cleanly to avoid confusion.
>
> And you may also need to backport right, Venkat and Dipesh?
Yes, once approved, we will be sending out a backport patch for GCC16 branch.

Thanks,
Dipesh.
>
> Thx,
> Haochen