>From ecd8be962f69393c183f941bfdbd7a7d3876d442 Mon Sep 17 00:00:00 2001 From: Liu, Jinsong <jinsong.liu@xxxxxxxxx> Date: Mon, 27 Feb 2012 05:19:32 +0800 Subject: [PATCH] KVM: expose Intel cpu new features to guest Intel recently release 2 new features, HLE and TRM. Refer to http://software.intel.com/file/41417. This patch expose them to guest. Signed-off-by: Liu, Jinsong <jinsong.liu@xxxxxxxxx> --- arch/x86/include/asm/cpufeature.h | 2 ++ arch/x86/kvm/cpuid.c | 3 ++- 2 files changed, 4 insertions(+), 1 deletions(-) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 17c5d4b..e8d12a8 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -198,10 +198,12 @@ /* 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_HLE (9*32+ 4) /* Hardware Lock Elision */ #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 */ +#define X86_FEATURE_RTM (9*32+11) /* Restricted Transactional Memory */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 9fed5be..c2134b8 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -247,7 +247,8 @@ static int do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function, /* cpuid 7.0.ebx */ const u32 kvm_supported_word9_x86_features = - F(FSGSBASE) | F(BMI1) | F(AVX2) | F(SMEP) | F(BMI2) | F(ERMS); + F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) | + F(BMI2) | F(ERMS) | F(RTM); /* all calls to cpuid_count() should be made on the same cpu */ get_cpu(); -- 1.7.1
Attachment:
0001-KVM-expose-Intel-cpu-new-features-to-guest.patch
Description: 0001-KVM-expose-Intel-cpu-new-features-to-guest.patch
