diff options
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index d11be3fb7c80..fc1964d5e97c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -803,12 +803,20 @@ static void vmx_fpu_activate(struct kvm_vcpu *vcpu) if (kvm_read_cr0_bits(vcpu, X86_CR0_TS)) vmcs_set_bits(GUEST_CR0, X86_CR0_TS); update_exception_bitmap(vcpu); + vcpu->arch.cr0_guest_owned_bits = X86_CR0_TS; + vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits); } +static void vmx_decache_cr0_guest_bits(struct kvm_vcpu *vcpu); + static void vmx_fpu_deactivate(struct kvm_vcpu *vcpu) { + vmx_decache_cr0_guest_bits(vcpu); vmcs_set_bits(GUEST_CR0, X86_CR0_TS); update_exception_bitmap(vcpu); + vcpu->arch.cr0_guest_owned_bits = 0; + vmcs_writel(CR0_GUEST_HOST_MASK, ~vcpu->arch.cr0_guest_owned_bits); + vmcs_writel(CR0_READ_SHADOW, vcpu->arch.cr0); } static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu) @@ -2996,8 +3004,7 @@ static int handle_cr(struct kvm_vcpu *vcpu) }; break; case 2: /* clts */ - vcpu->arch.cr0 &= ~X86_CR0_TS; - vmcs_writel(CR0_READ_SHADOW, kvm_read_cr0(vcpu)); + vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS)); trace_kvm_cr_write(0, kvm_read_cr0(vcpu)); skip_emulated_instruction(vcpu); return 1; |