[2/2] kvm: x86: Expose X86_FEATURE_FLUSH_L1D to kvm guests
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Message ID 20180814173049.21756-2-jmattson@google.com
State New
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Series
  • [1/2] kvm: vmx: Add IA32_FLUSH_CMD guest support
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Commit Message

Jim Mattson Aug. 14, 2018, 5:30 p.m. UTC
If this feature is available on the host, it can be exposed to a kvm
guest.

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Ben Serebrin <serebrin@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
---
 arch/x86/kvm/cpuid.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch
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diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index 7e042e3d47fd5..2a62270d82b69 100644
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -411,7 +411,7 @@  static inline int __do_cpuid_ent(struct kvm_cpuid_entry2 *entry, u32 function,
 	/* cpuid 7.0.edx*/
 	const u32 kvm_cpuid_7_0_edx_x86_features =
 		F(AVX512_4VNNIW) | F(AVX512_4FMAPS) | F(SPEC_CTRL) |
-		F(SPEC_CTRL_SSBD) | F(ARCH_CAPABILITIES);
+		F(SPEC_CTRL_SSBD) | F(FLUSH_L1D) | F(ARCH_CAPABILITIES);
 
 	/* all calls to cpuid_count() should be made on the same cpu */
 	get_cpu();