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| author | Paolo Bonzini <pbonzini@redhat.com> | 2015-05-05 11:50:23 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-06-04 16:17:46 +0200 |
| commit | 660a5d517aaab9187f93854425c4c63f4a09195c (patch) | |
| tree | c905809e6da8c3bb2896c7ea2dd12d9f206ab4e0 /arch/x86/kvm/cpuid.h | |
| parent | cd7764fe9f73530b20a0f2310fa753af635fabb3 (diff) | |
| download | linux-660a5d517aaab9187f93854425c4c63f4a09195c.tar.bz2 | |
KVM: x86: save/load state on SMM switch
The big ugly one. This patch adds support for switching in and out of
system management mode, respectively upon receiving KVM_REQ_SMI and upon
executing a RSM instruction. Both 32- and 64-bit formats are supported
for the SMM state save area.
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/cpuid.h')
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index 496b3695d3d3..dd05b9cef6ae 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -70,6 +70,14 @@ static inline bool guest_cpuid_has_fsgsbase(struct kvm_vcpu *vcpu) return best && (best->ebx & bit(X86_FEATURE_FSGSBASE)); } +static inline bool guest_cpuid_has_longmode(struct kvm_vcpu *vcpu) +{ + struct kvm_cpuid_entry2 *best; + + best = kvm_find_cpuid_entry(vcpu, 0x80000001, 0); + return best && (best->edx & bit(X86_FEATURE_LM)); +} + static inline bool guest_cpuid_has_osvw(struct kvm_vcpu *vcpu) { struct kvm_cpuid_entry2 *best; |