Hongtao
> > > Cc: gcc-patches@gcc.gnu.org
> > > Subject: Re: [PATCH V2] [X86] Workaround possible CPUID bug in Sandy
> > > Bridge.
> > >
> > > On Wed, Aug 9, 2023 at 3:48 AM liuhongt wrote:
> > > >
> > > >
On Wed, Aug 9, 2023 at 8:37 AM Liu, Hongtao wrote:
>
>
>
> > -Original Message-
> > From: Uros Bizjak
> > Sent: Wednesday, August 9, 2023 2:33 PM
> > To: Liu, Hongtao
> > Cc: gcc-patches@gcc.gnu.org
> > Subject: Re: [PATCH V2] [X86] Work
> -Original Message-
> From: Uros Bizjak
> Sent: Wednesday, August 9, 2023 2:33 PM
> To: Liu, Hongtao
> Cc: gcc-patches@gcc.gnu.org
> Subject: Re: [PATCH V2] [X86] Workaround possible CPUID bug in Sandy
> Bridge.
>
> On Wed, Aug 9, 2023 at 3:48 AM liuhon
On Wed, Aug 9, 2023 at 3:48 AM liuhongt wrote:
>
> > Please rather do it in a more self-descriptive way, as proposed in the
> > attached patch. You won't need a comment then.
> >
>
> Adjusted in V2 patch.
>
> Don't access leaf 7 subleaf 1 unless subleaf 0 says it is
> supported via EAX.
>
> Intel
On Wed, Aug 9, 2023 at 3:48 AM liuhongt wrote:
>
> > Please rather do it in a more self-descriptive way, as proposed in the
> > attached patch. You won't need a comment then.
> >
>
> Adjusted in V2 patch.
>
> Don't access leaf 7 subleaf 1 unless subleaf 0 says it is
> supported via EAX.
>
> Intel
> Please rather do it in a more self-descriptive way, as proposed in the
> attached patch. You won't need a comment then.
>
Adjusted in V2 patch.
Don't access leaf 7 subleaf 1 unless subleaf 0 says it is
supported via EAX.
Intel documentation says invalid subleaves return 0. We had been
relying
