On Mon, Mar 21, 2022 at 10:51 PM H.J. Lu <hjl.to...@gmail.com> wrote:
>
> On Mon, Mar 21, 2022 at 2:29 PM Uros Bizjak <ubiz...@gmail.com> wrote:
> >
> > On Mon, Mar 21, 2022 at 2:56 PM H.J. Lu <hjl.to...@gmail.com> wrote:
> > >
> > > 1. Pass 0x19 to __cpuid for bit_AESKLE.
> > > 2. Enable FEATURE_AESKLE only if bit_AESKLE is set.
> > >
> > > PR target/104998
> > > * common/config/i386/cpuinfo.h (get_available_features): Pass
> > > 0x19 to __cpuid for bit_AESKLE. Enable FEATURE_AESKLE only if
> > > bit_AESKLE is set.
> >
> > LGTM.
>
> OK for backport?
Looks safe, so OK.
Thanks,
Uros.
>
> Thanks.
>
> > Thanks,
> > Uros.
> >
> > > ---
> > > gcc/common/config/i386/cpuinfo.h | 4 ++--
> > > 1 file changed, 2 insertions(+), 2 deletions(-)
> > >
> > > diff --git a/gcc/common/config/i386/cpuinfo.h
> > > b/gcc/common/config/i386/cpuinfo.h
> > > index 61b1a0f291c..239759dc766 100644
> > > --- a/gcc/common/config/i386/cpuinfo.h
> > > +++ b/gcc/common/config/i386/cpuinfo.h
> > > @@ -779,11 +779,11 @@ get_available_features (struct __processor_model
> > > *cpu_model,
> > > /* Get Advanced Features at level 0x19 (eax = 0x19). */
> > > if (max_cpuid_level >= 0x19)
> > > {
> > > - set_feature (FEATURE_AESKLE);
> > > - __cpuid (19, eax, ebx, ecx, edx);
> > > + __cpuid (0x19, eax, ebx, ecx, edx);
> > > /* Check if OS support keylocker. */
> > > if (ebx & bit_AESKLE)
> > > {
> > > + set_feature (FEATURE_AESKLE);
> > > if (ebx & bit_WIDEKL)
> > > set_feature (FEATURE_WIDEKL);
> > > if (has_kl)
> > > --
> > > 2.35.1
> > >
>
>
>
> --
> H.J.
