From 090d1a6908d2fba8c6657d7710d61ba360c9f248 Mon Sep 17 00:00:00 2001 From: Andrew Cooper Date: Thu, 19 Jan 2017 10:26:14 +0000 Subject: [PATCH] x86/cpufeatures: Expose self-snoop to all guests MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Self-snoop describes a property of the CPU cache behaviour, which FreeBSD uses to optimise its cache flushing algorithm. Signed-off-by: Andrew Cooper Reviewed-by: Jan Beulich Tested-by: Roger Pau Monné --- xen/include/public/arch-x86/cpufeatureset.h | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/include/public/arch-x86/cpufeatureset.h b/xen/include/public/arch-x86/cpufeatureset.h index 306200b8c2..70f1e3024b 100644 --- a/xen/include/public/arch-x86/cpufeatureset.h +++ b/xen/include/public/arch-x86/cpufeatureset.h @@ -114,6 +114,7 @@ XEN_CPUFEATURE(MMX, 0*32+23) /*A Multimedia Extensions */ XEN_CPUFEATURE(FXSR, 0*32+24) /*A FXSAVE and FXRSTOR instructions */ XEN_CPUFEATURE(SSE, 0*32+25) /*A Streaming SIMD Extensions */ XEN_CPUFEATURE(SSE2, 0*32+26) /*A Streaming SIMD Extensions-2 */ +XEN_CPUFEATURE(SS, 0*32+27) /*A CPU self snoop */ XEN_CPUFEATURE(HTT, 0*32+28) /*!A Hyper-Threading Technology */ XEN_CPUFEATURE(TM1, 0*32+29) /* Thermal Monitor 1 */ XEN_CPUFEATURE(PBE, 0*32+31) /* Pending Break Enable */ -- 2.30.2