> 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 <[email protected]> > > --- > > 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... >
I was reusing Word 3 as you suggested in patch rev. 1. There was idea to use init_scattered_cpuid_features. What is good place for this feature?
