| Message ID | 20190924205108.241657-1-jmattson@google.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | kvm: x86: Enumerate support for CLZERO instruction | expand |
On 24/09/19 22:51, Jim Mattson wrote: > 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> > --- > arch/x86/kvm/cpuid.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c > index dd5985eb61b4..787f1475bf77 100644 > --- a/arch/x86/kvm/cpuid.c > +++ b/arch/x86/kvm/cpuid.c > @@ -479,8 +479,9 @@ 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 = > Queued, thanks. Paolo
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index dd5985eb61b4..787f1475bf77 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -479,8 +479,9 @@ 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 =
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> --- arch/x86/kvm/cpuid.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)