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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-02-26 12:09:49 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-03-04 12:35:20 +0100 |
| commit | 8f22372f85476bfe612136133d5883b28d163c23 (patch) | |
| tree | d27dff62d0bbd0832b8f8c74bec2eb7ce0411984 /arch/x86/kvm/vmx.c | |
| parent | b2740d3533a3f4aeb9553e872ce471ff73200a7f (diff) | |
| download | lwn-8f22372f85476bfe612136133d5883b28d163c23.tar.gz lwn-8f22372f85476bfe612136133d5883b28d163c23.zip | |
KVM: VMX: use vmcs_clear/set_bits for debug register exits
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx.c')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 14 |
1 files changed, 3 insertions, 11 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index aa16d5874fe6..46154dac71e6 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -5619,11 +5619,8 @@ static int handle_dr(struct kvm_vcpu *vcpu) } if (vcpu->guest_debug == 0) { - 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_MOV_DR_EXITING; - vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); + vmcs_clear_bits(CPU_BASED_VM_EXEC_CONTROL, + CPU_BASED_MOV_DR_EXITING); /* * No more DR vmexits; force a reload of the debug registers @@ -5660,8 +5657,6 @@ static void vmx_set_dr6(struct kvm_vcpu *vcpu, unsigned long val) static void vmx_sync_dirty_debug_regs(struct kvm_vcpu *vcpu) { - u32 cpu_based_vm_exec_control; - get_debugreg(vcpu->arch.db[0], 0); get_debugreg(vcpu->arch.db[1], 1); get_debugreg(vcpu->arch.db[2], 2); @@ -5670,10 +5665,7 @@ static void vmx_sync_dirty_debug_regs(struct kvm_vcpu *vcpu) vcpu->arch.dr7 = vmcs_readl(GUEST_DR7); vcpu->arch.switch_db_regs &= ~KVM_DEBUGREG_WONT_EXIT; - - cpu_based_vm_exec_control = vmcs_read32(CPU_BASED_VM_EXEC_CONTROL); - cpu_based_vm_exec_control |= CPU_BASED_MOV_DR_EXITING; - vmcs_write32(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control); + vmcs_set_bits(CPU_BASED_VM_EXEC_CONTROL, CPU_BASED_MOV_DR_EXITING); } static void vmx_set_dr7(struct kvm_vcpu *vcpu, unsigned long val) |