diff options
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7d5c5207a414..e8e2d09dfe7d 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2984,11 +2984,13 @@ static int kvm_vcpu_ioctl_x86_set_debugregs(struct kvm_vcpu *vcpu, static void kvm_vcpu_ioctl_x86_get_xsave(struct kvm_vcpu *vcpu, struct kvm_xsave *guest_xsave) { - if (cpu_has_xsave) + if (cpu_has_xsave) { memcpy(guest_xsave->region, &vcpu->arch.guest_fpu.state->xsave, - xstate_size); - else { + vcpu->arch.guest_xstate_size); + *(u64 *)&guest_xsave->region[XSAVE_HDR_OFFSET / sizeof(u32)] &= + vcpu->arch.guest_supported_xcr0 | XSTATE_FPSSE; + } else { memcpy(guest_xsave->region, &vcpu->arch.guest_fpu.state->fxsave, sizeof(struct i387_fxsave_struct)); @@ -3014,7 +3016,7 @@ static int kvm_vcpu_ioctl_x86_set_xsave(struct kvm_vcpu *vcpu, if (xstate_bv & ~host_xcr0) return -EINVAL; memcpy(&vcpu->arch.guest_fpu.state->xsave, - guest_xsave->region, xstate_size); + guest_xsave->region, vcpu->arch.guest_xstate_size); } else { if (xstate_bv & ~XSTATE_FPSSE) return -EINVAL; @@ -6951,6 +6953,7 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) vcpu->arch.pv_time_enabled = false; vcpu->arch.guest_supported_xcr0 = 0; + vcpu->arch.guest_xstate_size = XSAVE_HDR_SIZE + XSAVE_HDR_OFFSET; kvm_async_pf_hash_reset(vcpu); kvm_pmu_init(vcpu); |