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[PATCH 2/9] KVM: x86: allow guest to use cflushopt anc clwb

Started byXiao Guangrong <guangrong.xiao@linux.intel.com>
First post2015-08-21 07:00 +0200
Last post2015-08-21 07:00 +0200
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  [PATCH 2/9] KVM: x86: allow guest to use cflushopt anc clwb Xiao Guangrong <guangrong.xiao@linux.intel.com> - 2015-08-21 07:00 +0200

#1210853 — [PATCH 2/9] KVM: x86: allow guest to use cflushopt anc clwb

FromXiao Guangrong <guangrong.xiao@linux.intel.com>
Date2015-08-21 07:00 +0200
Subject[PATCH 2/9] KVM: x86: allow guest to use cflushopt anc clwb
Message-ID<pZMAO-1LC-7@gated-at.bofh.it>
Pass its CPU feature to guest to enable them in guest

These are needed by nvdimm drivers

The specification locates at:
https://software.intel.com/sites/default/files/managed/0d/53/319433-022.pdf

Signed-off-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
---
 arch/x86/kvm/cpuid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 2fbea25..962fc7d 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -348,7 +348,7 @@ static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 		F(FSGSBASE) | F(BMI1) | F(HLE) | F(AVX2) | F(SMEP) |
 		F(BMI2) | F(ERMS) | f_invpcid | F(RTM) | f_mpx | F(RDSEED) |
 		F(ADX) | F(SMAP) | F(AVX512F) | F(AVX512PF) | F(AVX512ER) |
-		F(AVX512CD);
+		F(AVX512CD) | F(CLFLUSHOPT) | F(CLWB);
 
 	/* cpuid 0xD.1.eax */
 	const u32 kvm_supported_word10_x86_features =
-- 
2.4.3

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