Messages in this thread | | | Date | Wed, 18 Nov 2015 21:47:52 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 1/3] x86/xen: Avoid fast syscall path for Xen PV guests |
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On Wed, Nov 18, 2015 at 12:21:56PM -0800, Andy Lutomirski wrote: > > diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h > > index e4f8010..0e4fe5b 100644 > > --- a/arch/x86/include/asm/cpufeature.h > > +++ b/arch/x86/include/asm/cpufeature.h > > @@ -216,6 +216,7 @@ > > #define X86_FEATURE_PAUSEFILTER ( 8*32+13) /* AMD filtered pause intercept */ > > #define X86_FEATURE_PFTHRESHOLD ( 8*32+14) /* AMD pause filter threshold */ > > #define X86_FEATURE_VMMCALL ( 8*32+15) /* Prefer vmmcall to vmcall */ > > +#define X86_FEATURE_XENPV ( 8*32+16) /* Xen paravirtual guest */ > > > > This bit is highly magical and I think we need Borislav's ack.
Yeah, that should be
#define X86_FEATURE_XENPV ( 8*32+16) /* "" Xen paravirtual guest */ ^^
note the empty "". This prevents it from appearing in /proc/cpuinfo.
-- Regards/Gruss, Boris.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg) --
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