diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-04-20 08:50:58 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2019-06-18 12:46:03 +0300 |
| commit | 165072b089e5af32c2693ab900d5fb5d41e3f293 (patch) | |
| tree | 235c969908b6d21a80bf4bec4147a45346beb154 | |
| parent | 2342080cd6752fd40958f5a2aee0fb496ae92dce (diff) | |
| download | linux-165072b089e5af32c2693ab900d5fb5d41e3f293.tar.xz | |
KVM: x86: Move kvm_{before,after}_interrupt() calls to vendor code
VMX can conditionally call kvm_{before,after}_interrupt() since KVM
always uses "ack interrupt on exit" and therefore explicitly handles
interrupts as opposed to blindly enabling irqs.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/kvm/svm.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 4 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
3 files changed, 6 insertions, 2 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 302cb409d452..acc09e9fc173 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -6174,6 +6174,7 @@ out: static void svm_handle_external_intr(struct kvm_vcpu *vcpu) { + kvm_before_interrupt(vcpu); local_irq_enable(); /* * We must have an instruction with interrupts enabled, so @@ -6181,6 +6182,7 @@ static void svm_handle_external_intr(struct kvm_vcpu *vcpu) */ asm("nop"); local_irq_disable(); + kvm_after_interrupt(vcpu); } static void svm_sched_in(struct kvm_vcpu *vcpu, int cpu) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index c90abf33b509..963c8c409223 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6145,6 +6145,8 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) desc = (gate_desc *)host_idt_base + vector; entry = gate_offset(desc); + kvm_before_interrupt(vcpu); + asm volatile( #ifdef CONFIG_X86_64 "mov %%" _ASM_SP ", %[sp]\n\t" @@ -6165,6 +6167,8 @@ static void vmx_handle_external_intr(struct kvm_vcpu *vcpu) [ss]"i"(__KERNEL_DS), [cs]"i"(__KERNEL_CS) ); + + kvm_after_interrupt(vcpu); } STACK_FRAME_NON_STANDARD(vmx_handle_external_intr); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index dcba699e2d46..9ff3a670d2b3 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7999,9 +7999,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu) vcpu->mode = OUTSIDE_GUEST_MODE; smp_wmb(); - kvm_before_interrupt(vcpu); kvm_x86_ops->handle_external_intr(vcpu); - kvm_after_interrupt(vcpu); ++vcpu->stat.exits; |