kvm: x86: Enumerate support for CLZERO instruction

CLZERO is available to the guest if it is supported on the
host. Therefore, enumerate support for the instruction in
KVM_GET_SUPPORTED_CPUID whenever it is supported on the host.

Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c
index ce4a1b3cc3e8218010aa042cbcff15ab06c15a39..34d9f9f481a34e630d8f38acc520d81fd85b1d32 100644 (file)
--- a/arch/x86/kvm/cpuid.c
+++ b/arch/x86/kvm/cpuid.c
@@ -485,8 +485,9 @@ static inline int __do_cpuid_func(struct kvm_cpuid_entry2 *entry, u32 function,
 
        /* cpuid 0x80000008.ebx */
        const u32 kvm_cpuid_8000_0008_ebx_x86_features =
-               F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) | F(AMD_SSBD) | F(VIRT_SSBD) |
-               F(AMD_SSB_NO) | F(AMD_STIBP) | F(AMD_STIBP_ALWAYS_ON);
+               F(CLZERO) | F(WBNOINVD) | F(AMD_IBPB) | F(AMD_IBRS) |
+               F(AMD_STIBP) | F(AMD_STIBP_ALWAYS_ON) | F(AMD_SSBD) |
+               F(VIRT_SSBD) | F(AMD_SSB_NO);
 
        /* cpuid 0xC0000001.edx */
        const u32 kvm_cpuid_C000_0001_edx_x86_features =