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| author | Aaron Lewis <aaronlewis@google.com> | 2019-10-21 16:30:20 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-10-22 15:42:48 +0200 |
| commit | 7204160eb7809345d10c983d9d1dfbd98060a56d (patch) | |
| tree | 51721dd622a5e7e985071a6ff5f0bd1eecafcd24 /arch/x86/kvm/vmx/vmx.c | |
| parent | 1b84292bea00c042afc2f950c61b2c027bd36ff7 (diff) | |
| download | linux-stable-7204160eb7809345d10c983d9d1dfbd98060a56d.tar.gz | |
KVM: x86: Introduce vcpu->arch.xsaves_enabled
Cache whether XSAVES is enabled in the guest by adding xsaves_enabled to
vcpu->arch.
Reviewed-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Aaron Lewis <aaronlewis@google.com>
Change-Id: If4638e0901c28a4494dad2e103e2c075e8ab5d68
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 4211f72a1a01..751765532305 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -4050,6 +4050,8 @@ static void vmx_compute_secondary_exec_control(struct vcpu_vmx *vmx) guest_cpuid_has(vcpu, X86_FEATURE_XSAVE) && guest_cpuid_has(vcpu, X86_FEATURE_XSAVES); + vcpu->arch.xsaves_enabled = xsaves_enabled; + if (!xsaves_enabled) exec_control &= ~SECONDARY_EXEC_XSAVES; @@ -7089,6 +7091,9 @@ static void vmx_cpuid_update(struct kvm_vcpu *vcpu) { struct vcpu_vmx *vmx = to_vmx(vcpu); + /* xsaves_enabled is recomputed in vmx_compute_secondary_exec_control(). */ + vcpu->arch.xsaves_enabled = false; + if (cpu_has_secondary_exec_ctrls()) { vmx_compute_secondary_exec_control(vmx); vmcs_set_secondary_exec_control(vmx); |