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KVM: expose latest Intel cpu new features (BMI1/BMI2/FMA/AVX2) to guest

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Intel latest cpu add 6 new features, refer http://software.intel.com/file/36945
The new feature cpuid listed as below:

1. FMA		CPUID.EAX=01H:ECX.FMA[bit 12]
2. MOVBE	CPUID.EAX=01H:ECX.MOVBE[bit 22]
3. BMI1		CPUID.EAX=07H,ECX=0H:EBX.BMI1[bit 3]
4. AVX2		CPUID.EAX=07H,ECX=0H:EBX.AVX2[bit 5]
5. BMI2		CPUID.EAX=07H,ECX=0H:EBX.BMI2[bit 8]
6. LZCNT	CPUID.EAX=80000001H:ECX.LZCNT[bit 5]

This patch expose these features to guest.
Among them, FMA/MOVBE/LZCNT has already been defined, MOVBE/LZCNT has
already been exposed.

This patch defines BMI1/AVX2/BMI2, and exposes FMA/BMI1/AVX2/BMI2 to guest.

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Liu, Jinsong
2011-11-28 03:55:19 -08:00
committed by Avi Kivity
parent 00b27a3efb
commit fb215366b3
2 changed files with 5 additions and 2 deletions
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3
arch/x86/include/asm/cpufeature.h
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@@ -197,7 +197,10 @@
/* Intel-defined CPU features, CPUID level 0x00000007:0 (ebx), word 9 */
#define X86_FEATURE_FSGSBASE (9*32+ 0) /* {RD/WR}{FS/GS}BASE instructions*/
#define X86_FEATURE_BMI1 (9*32+ 3) /* 1st group bit manipulation extensions */
#define X86_FEATURE_AVX2 (9*32+ 5) /* AVX2 instructions */
#define X86_FEATURE_SMEP (9*32+ 7) /* Supervisor Mode Execution Protection */
#define X86_FEATURE_BMI2 (9*32+ 8) /* 2nd group bit manipulation extensions */
#define X86_FEATURE_ERMS (9*32+ 9) /* Enhanced REP MOVSB/STOSB */
#if defined(__KERNEL__) && !defined(__ASSEMBLY__)