From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 19 Dec 2016 10:44:07 +0000 (+0100)
Subject: KVM: VMX: use vmcs_set/clear_bits for CPU-based execution controls
X-Git-Tag: v4.14-rc1~1448^2~19
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=47c0152e0f8bd325869417e0aaff032e62bcf6f2;p=platform%2Fkernel%2Flinux-rpi3.git

KVM: VMX: use vmcs_set/clear_bits for CPU-based execution controls

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index bca6066..0e0b5d0 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5459,26 +5459,20 @@ static bool nested_exit_on_nmi(struct kvm_vcpu *vcpu)
 
 static void enable_irq_window(struct kvm_vcpu *vcpu)
 {
-	u32 cpu_based_vm_exec_control;
-
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_INTR_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
+	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
+		      CPU_BASED_VIRTUAL_INTR_PENDING);
 }
 
 static void enable_nmi_window(struct kvm_vcpu *vcpu)
 {
-	u32 cpu_based_vm_exec_control;
-
 	if (!cpu_has_virtual_nmis() ||
 	    vmcs_read32(GUEST_INTERRUPTIBILITY_INFO) & GUEST_INTR_STATE_STI) {
 		enable_irq_window(vcpu);
 		return;
 	}
 
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control |= CPU_BASED_VIRTUAL_NMI_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
+	vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL,
+		      CPU_BASED_VIRTUAL_NMI_PENDING);
 }
 
 static void vmx_inject_irq(struct kvm_vcpu *vcpu)
@@ -6137,12 +6131,8 @@ static int handle_tpr_below_threshold(struct kvm_vcpu *vcpu)
 
 static int handle_interrupt_window(struct kvm_vcpu *vcpu)
 {
-	u32 cpu_based_vm_exec_control;
-
-	/* clear pending irq */
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_INTR_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
+	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+			CPU_BASED_VIRTUAL_INTR_PENDING);
 
 	kvm_make_request(KVM_REQ_EVENT, vcpu);
 
@@ -6408,12 +6398,8 @@ static int handle_ept_misconfig(struct kvm_vcpu *vcpu)
 
 static int handle_nmi_window(struct kvm_vcpu *vcpu)
 {
-	u32 cpu_based_vm_exec_control;
-
-	/* clear pending NMI */
-	cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL);
-	cpu_based_vm_exec_control &= ~CPU_BASED_VIRTUAL_NMI_PENDING;
-	vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control);
+	vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL,
+			CPU_BASED_VIRTUAL_NMI_PENDING);
 	++vcpu->stat.nmi_window_exits;
 	kvm_make_request(KVM_REQ_EVENT, vcpu);