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

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Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-12-19 11:44:07 +01:00
parent 4306f200c7
commit 47c0152e0f
1 changed files with 8 additions and 22 deletions
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30
arch/x86/kvm/vmx.c
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@ -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);