From f0b85051d0f0891378a83db22c0786f1d756fbff Mon Sep 17 00:00:00 2001 From: Alexander Graf Date: Tue, 25 Nov 2008 20:17:01 +0100 Subject: [PATCH] KVM: SVM: Clean up VINTR setting The current VINTR intercept setters don't look clean to me. To make the code easier to read and enable the possibilty to trap on a VINTR set, this uses a helper function to set the VINTR intercept. v2 uses two distinct functions for setting and clearing the bit Acked-by: Joerg Roedel Signed-off-by: Alexander Graf Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a9e769e4e251..33407d95761f 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -718,6 +718,16 @@ static void svm_set_rflags(struct kvm_vcpu *vcpu, unsigned long rflags) to_svm(vcpu)->vmcb->save.rflags = rflags; } +static void svm_set_vintr(struct vcpu_svm *svm) +{ + svm->vmcb->control.intercept |= 1ULL << INTERCEPT_VINTR; +} + +static void svm_clear_vintr(struct vcpu_svm *svm) +{ + svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR); +} + static struct vmcb_seg *svm_seg(struct kvm_vcpu *vcpu, int seg) { struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save; @@ -1380,7 +1390,7 @@ static int interrupt_window_interception(struct vcpu_svm *svm, { KVMTRACE_0D(PEND_INTR, &svm->vcpu, handler); - svm->vmcb->control.intercept &= ~(1ULL << INTERCEPT_VINTR); + svm_clear_vintr(svm); svm->vmcb->control.int_ctl &= ~V_IRQ_MASK; /* * If the user space waits to inject interrupts, exit as soon as @@ -1593,7 +1603,7 @@ static void svm_intr_assist(struct kvm_vcpu *vcpu) (vmcb->control.int_state & SVM_INTERRUPT_SHADOW_MASK) || (vmcb->control.event_inj & SVM_EVTINJ_VALID)) { /* unable to deliver irq, set pending irq */ - vmcb->control.intercept |= (1ULL << INTERCEPT_VINTR); + svm_set_vintr(svm); svm_inject_irq(svm, 0x0); goto out; } @@ -1652,9 +1662,9 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu, */ if (!svm->vcpu.arch.interrupt_window_open && (svm->vcpu.arch.irq_summary || kvm_run->request_interrupt_window)) - control->intercept |= 1ULL << INTERCEPT_VINTR; - else - control->intercept &= ~(1ULL << INTERCEPT_VINTR); + svm_set_vintr(svm); + else + svm_clear_vintr(svm); } static int svm_set_tss_addr(struct kvm *kvm, unsigned int addr)