V2 [PATCH] x86: Adjust tst-cpu-features-supports.c for GCC 11

H.J. Lu hjl.tools@gmail.com
Fri Dec 4 13:12:09 GMT 2020


On Fri, Dec 4, 2020 at 5:07 AM H.J. Lu <hjl.tools@gmail.com> wrote:
>
> On Fri, Dec 4, 2020 at 12:12 AM Florian Weimer <fweimer@redhat.com> wrote:
> >
> > * H. J. Lu via Libc-alpha:
> >
> > > Set RDRAND usable if CPU supports RDRAND.  Also check HAS_CPU_FEATURE
> > > instead of CPU_FEATURE_USABLE for FSGSBASE, LM and XSAVES since
> > > FSGSBASE/LM require kernel support and XSAVES is supervisor-mode only.
> >
> > I think the commit subject is misleading because the RDRAND part is a
> > glibc bug fix.  Rest looks okay to me.
> >
>
> Here is the V2 patch.  It changed IBT and SHSTK to check HAS_CPU_FEATURE
> since they need OS support.
>

I am checking in this.


-- 
H.J.


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