diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 9bc68c7..02eeba8 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2759,6 +2759,11 @@ static __exit void hardware_unsetup(void) free_kvm_area(); } +static bool emulation_required(struct kvm_vcpu *vcpu) +{ + return emulate_invalid_guest_state && !guest_state_valid(vcpu); +} + static void fix_pmode_seg(struct kvm_vcpu *vcpu, int seg, struct kvm_segment *save) { @@ -2794,7 +2799,6 @@ static void enter_pmode(struct kvm_vcpu *vcpu) vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS); vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS); - vmx->emulation_required = 1; vmx->rmode.vm86_active = 0; vmx_segment_cache_clear(vmx); @@ -2885,7 +2889,6 @@ static void enter_rmode(struct kvm_vcpu *vcpu) vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_SS], VCPU_SREG_SS); vmx_get_segment(vcpu, &vmx->rmode.segs[VCPU_SREG_CS], VCPU_SREG_CS); - vmx->emulation_required = 1; vmx->rmode.vm86_active = 1; /* @@ -3111,6 +3114,9 @@ static void vmx_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0) vmcs_writel(CR0_READ_SHADOW, cr0); vmcs_writel(GUEST_CR0, hw_cr0); vcpu->arch.cr0 = cr0; + + /* depends on vcpu->arch.cr0 to be set to a new value */ + vmx->emulation_required = emulation_required(vcpu); } static u64 construct_eptp(unsigned long root_hpa) @@ -3298,8 +3304,7 @@ static void vmx_set_segment(struct kvm_vcpu *vcpu, vmcs_write32(sf->ar_bytes, vmx_segment_access_rights(var)); out: - if (!vmx->emulation_required) - vmx->emulation_required = !guest_state_valid(vcpu); + vmx->emulation_required |= emulation_required(vcpu); } static void vmx_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l) @@ -5027,7 +5032,7 @@ static int handle_invalid_guest_state(struct kvm_vcpu *vcpu) schedule(); } - vmx->emulation_required = !guest_state_valid(vcpu); + vmx->emulation_required = emulation_required(vcpu); out: return ret; } @@ -5970,7 +5975,7 @@ static int vmx_handle_exit(struct kvm_vcpu *vcpu) u32 vectoring_info = vmx->idt_vectoring_info; /* If guest state is invalid, start emulating */ - if (vmx->emulation_required && emulate_invalid_guest_state) + if (vmx->emulation_required) return handle_invalid_guest_state(vcpu); /* @@ -6253,7 +6258,7 @@ static void __noclone vmx_vcpu_run(struct kvm_vcpu *vcpu) /* Don't enter VMX if guest state is invalid, let the exit handler start emulation until we arrive back to a valid state */ - if (vmx->emulation_required && emulate_invalid_guest_state) + if (vmx->emulation_required) return; if (test_bit(VCPU_REGS_RSP, (unsigned long *)&vcpu->arch.regs_dirty)) |