[Xen-devel] [PATCH v2 01/14] x86/cpufeatures: Expose self-snoop to all guests

[Andrew Cooper <andrew.cooper3@xxxxxxxxxx>]

Self-snoop describes a property of the CPU cache behaviour, which FreeBSD uses
to optimise its cache flushing algorithm.

Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
---
CC: Jan Beulich <JBeulich@xxxxxxxx>
CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>

v2:
 * New
---
 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 306200b..70f1e30 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 */
-- 
2.1.4


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