KVM: Use kvm_get_rflags() and kvm_set_rflags() instead of the raw versions

Some rflags bits are owned by the host, not guest, so we need to use
kvm_get_rflags() to strip those bits away or kvm_set_rflags() to add them
back.
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/x86/kvm/svm.c

@@ -975,7 +975,7 @@ static void init_vmcb(struct vcpu_svm *svm)
 	svm_set_efer(&svm->vcpu, 0);
 	save->dr6 = 0xffff0ff0;
 	save->dr7 = 0x400;
-	save->rflags = 2;
+	kvm_set_rflags(&svm->vcpu, 2);
 	save->rip = 0x0000fff0;
 	svm->vcpu.arch.regs[VCPU_REGS_RIP] = save->rip;
 
@@ -2127,7 +2127,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
 	nested_vmcb->save.cr3    = kvm_read_cr3(&svm->vcpu);
 	nested_vmcb->save.cr2    = vmcb->save.cr2;
 	nested_vmcb->save.cr4    = svm->vcpu.arch.cr4;
-	nested_vmcb->save.rflags = vmcb->save.rflags;
+	nested_vmcb->save.rflags = kvm_get_rflags(&svm->vcpu);
 	nested_vmcb->save.rip    = vmcb->save.rip;
 	nested_vmcb->save.rsp    = vmcb->save.rsp;
 	nested_vmcb->save.rax    = vmcb->save.rax;
@@ -2184,7 +2184,7 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
 	svm->vmcb->save.ds = hsave->save.ds;
 	svm->vmcb->save.gdtr = hsave->save.gdtr;
 	svm->vmcb->save.idtr = hsave->save.idtr;
-	svm->vmcb->save.rflags = hsave->save.rflags;
+	kvm_set_rflags(&svm->vcpu, hsave->save.rflags);
 	svm_set_efer(&svm->vcpu, hsave->save.efer);
 	svm_set_cr0(&svm->vcpu, hsave->save.cr0 | X86_CR0_PE);
 	svm_set_cr4(&svm->vcpu, hsave->save.cr4);
@@ -2312,7 +2312,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
 	hsave->save.efer   = svm->vcpu.arch.efer;
 	hsave->save.cr0    = kvm_read_cr0(&svm->vcpu);
 	hsave->save.cr4    = svm->vcpu.arch.cr4;
-	hsave->save.rflags = vmcb->save.rflags;
+	hsave->save.rflags = kvm_get_rflags(&svm->vcpu);
 	hsave->save.rip    = kvm_rip_read(&svm->vcpu);
 	hsave->save.rsp    = vmcb->save.rsp;
 	hsave->save.rax    = vmcb->save.rax;
@@ -2323,7 +2323,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
 
 	copy_vmcb_control_area(hsave, vmcb);
 
-	if (svm->vmcb->save.rflags & X86_EFLAGS_IF)
+	if (kvm_get_rflags(&svm->vcpu) & X86_EFLAGS_IF)
 		svm->vcpu.arch.hflags |= HF_HIF_MASK;
 	else
 		svm->vcpu.arch.hflags &= ~HF_HIF_MASK;
@@ -2341,7 +2341,7 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
 	svm->vmcb->save.ds = nested_vmcb->save.ds;
 	svm->vmcb->save.gdtr = nested_vmcb->save.gdtr;
 	svm->vmcb->save.idtr = nested_vmcb->save.idtr;
-	svm->vmcb->save.rflags = nested_vmcb->save.rflags;
+	kvm_set_rflags(&svm->vcpu, nested_vmcb->save.rflags);
 	svm_set_efer(&svm->vcpu, nested_vmcb->save.efer);
 	svm_set_cr0(&svm->vcpu, nested_vmcb->save.cr0);
 	svm_set_cr4(&svm->vcpu, nested_vmcb->save.cr4);
@@ -3384,7 +3384,7 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu)
 	     (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK))
 		return 0;
 
-	ret = !!(vmcb->save.rflags & X86_EFLAGS_IF);
+	ret = !!(kvm_get_rflags(vcpu) & X86_EFLAGS_IF);
 
 	if (is_guest_mode(vcpu))
 		return ret && !(svm->vcpu.arch.hflags & HF_VINTR_MASK);

arch/x86/kvm/vmx.c

@@ -2113,7 +2113,7 @@ static int vmx_get_cpl(struct kvm_vcpu *vcpu)
 	if (!is_protmode(vcpu))
 		return 0;
 
-	if (vmx_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */
+	if (kvm_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */
 		return 3;
 
 	return vmcs_read16(GUEST_CS_SELECTOR) & 3;

arch/x86/kvm/x86.c

@@ -4310,7 +4310,7 @@ static void init_emulate_ctxt(struct kvm_vcpu *vcpu)
 	kvm_x86_ops->get_cs_db_l_bits(vcpu, &cs_db, &cs_l);
 
 	vcpu->arch.emulate_ctxt.vcpu = vcpu;
-	vcpu->arch.emulate_ctxt.eflags = kvm_x86_ops->get_rflags(vcpu);
+	vcpu->arch.emulate_ctxt.eflags = kvm_get_rflags(vcpu);
 	vcpu->arch.emulate_ctxt.eip = kvm_rip_read(vcpu);
 	vcpu->arch.emulate_ctxt.mode =
 		(!is_protmode(vcpu)) ? X86EMUL_MODE_REAL :
@@ -4340,7 +4340,7 @@ int kvm_inject_realmode_interrupt(struct kvm_vcpu *vcpu, int irq)
 	vcpu->arch.emulate_ctxt.eip = c->eip;
 	memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
 	kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
-	kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+	kvm_set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
 
 	if (irq == NMI_VECTOR)
 		vcpu->arch.nmi_pending = false;
@@ -4473,7 +4473,7 @@ int x86_emulate_instruction(struct kvm_vcpu *vcpu,
 		r = EMULATE_DONE;
 
 	toggle_interruptibility(vcpu, vcpu->arch.emulate_ctxt.interruptibility);
-	kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+	kvm_set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
 	kvm_make_request(KVM_REQ_EVENT, vcpu);
 	memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
 	kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
@@ -5592,7 +5592,7 @@ int kvm_task_switch(struct kvm_vcpu *vcpu, u16 tss_selector, int reason,
 
 	memcpy(vcpu->arch.regs, c->regs, sizeof c->regs);
 	kvm_rip_write(vcpu, vcpu->arch.emulate_ctxt.eip);
-	kvm_x86_ops->set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
+	kvm_set_rflags(vcpu, vcpu->arch.emulate_ctxt.eflags);
 	kvm_make_request(KVM_REQ_EVENT, vcpu);
 	return EMULATE_DONE;
 }