Messages in this thread | | | Date | Thu, 27 Oct 2016 16:30:15 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v6: 4/4] x86/cpufeature: Add R3MWAIT to CPU features |
| |
On Thu, Oct 27, 2016 at 04:02:03PM +0200, Grzegorz Andrejczuk wrote: > Add cpu feature for ring 3 monitor/mwait. > Set HWCAP2 1st bit during init. > > Signed-off-by: Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> > --- > arch/x86/include/asm/cpufeatures.h | 2 ++ > arch/x86/kernel/cpu/intel.c | 4 ++++ > 2 files changed, 6 insertions(+) > > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h > index 92a8308..d430200 100644 > --- a/arch/x86/include/asm/cpufeatures.h > +++ b/arch/x86/include/asm/cpufeatures.h > @@ -71,6 +71,8 @@ > #define X86_FEATURE_RECOVERY ( 2*32+ 0) /* CPU in recovery mode */ > #define X86_FEATURE_LONGRUN ( 2*32+ 1) /* Longrun power control */ > #define X86_FEATURE_LRTI ( 2*32+ 3) /* LongRun table interface */ > +/* Xeon Phi x200 ring 3 MONITOR/MWAIT enabled */ > +#define X86_FEATURE_PHIR3MWAIT ( 2*32+ 4)
This leaf is for Transmeta CPUs:
/* Transmeta-defined CPU features, CPUID level 0x80860001, word 2 */
is KNL close to some Transmeta design, per chance or so?
I mean, for this to work, it would have to implement CPUID leaf 0x80860001...
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
| |