From fe4c7b1914ac46af751d256f5a20c2e12dcbaaae Mon Sep 17 00:00:00 2001 From: Gleb Natapov Date: Mon, 23 Mar 2009 11:23:18 +0200 Subject: KVM: reuse (pop|push)_irq from svm.c in vmx.c The prioritized bit vector manipulation functions are useful in both vmx and svm. Signed-off-by: Gleb Natapov Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 25 ++++--------------------- arch/x86/kvm/vmx.c | 17 ++--------------- arch/x86/kvm/x86.h | 18 ++++++++++++++++++ 3 files changed, 24 insertions(+), 36 deletions(-) (limited to 'arch') diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 5b35ebd4ec8..aa528dbad07 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -19,6 +19,7 @@ #include "irq.h" #include "mmu.h" #include "kvm_cache_regs.h" +#include "x86.h" #include #include @@ -132,24 +133,6 @@ static inline u32 svm_has(u32 feat) return svm_features & feat; } -static inline u8 pop_irq(struct kvm_vcpu *vcpu) -{ - int word_index = __ffs(vcpu->arch.irq_summary); - int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); - int irq = word_index * BITS_PER_LONG + bit_index; - - clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); - if (!vcpu->arch.irq_pending[word_index]) - clear_bit(word_index, &vcpu->arch.irq_summary); - return irq; -} - -static inline void push_irq(struct kvm_vcpu *vcpu, u8 irq) -{ - set_bit(irq, vcpu->arch.irq_pending); - set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary); -} - static inline void clgi(void) { asm volatile (__ex(SVM_CLGI)); @@ -1116,7 +1099,7 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run) if (!irqchip_in_kernel(kvm) && is_external_interrupt(exit_int_info)) { event_injection = true; - push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK); + kvm_push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK); } fault_address = svm->vmcb->control.exit_info_2; @@ -2336,7 +2319,7 @@ static void kvm_reput_irq(struct vcpu_svm *svm) if ((control->int_ctl & V_IRQ_MASK) && !irqchip_in_kernel(svm->vcpu.kvm)) { control->int_ctl &= ~V_IRQ_MASK; - push_irq(&svm->vcpu, control->int_vector); + kvm_push_irq(&svm->vcpu, control->int_vector); } svm->vcpu.arch.interrupt_window_open = @@ -2346,7 +2329,7 @@ static void kvm_reput_irq(struct vcpu_svm *svm) static void svm_do_inject_vector(struct vcpu_svm *svm) { - svm_inject_irq(svm, pop_irq(&svm->vcpu)); + svm_inject_irq(svm, kvm_pop_irq(&svm->vcpu)); } static void do_interrupt_requests(struct kvm_vcpu *vcpu, diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index b5eae7a00aa..2c0a2ed708d 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2489,18 +2489,6 @@ static void vmx_update_window_states(struct kvm_vcpu *vcpu) GUEST_INTR_STATE_MOV_SS))); } -static void kvm_do_inject_irq(struct kvm_vcpu *vcpu) -{ - int word_index = __ffs(vcpu->arch.irq_summary); - int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); - int irq = word_index * BITS_PER_LONG + bit_index; - - clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); - if (!vcpu->arch.irq_pending[word_index]) - clear_bit(word_index, &vcpu->arch.irq_summary); - kvm_queue_interrupt(vcpu, irq); -} - static void do_interrupt_requests(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) { @@ -2534,7 +2522,7 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu, if (vcpu->arch.interrupt_window_open) { if (vcpu->arch.irq_summary && !vcpu->arch.interrupt.pending) - kvm_do_inject_irq(vcpu); + kvm_queue_interrupt(vcpu, kvm_pop_irq(vcpu)); if (vcpu->arch.interrupt.pending) vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr); @@ -2619,8 +2607,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run) if (!irqchip_in_kernel(vcpu->kvm) && is_external_interrupt(vect_info)) { int irq = vect_info & VECTORING_INFO_VECTOR_MASK; - set_bit(irq, vcpu->arch.irq_pending); - set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary); + kvm_push_irq(vcpu, irq); } if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR) diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 6a4be78a738..2ab679102dc 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -19,4 +19,22 @@ static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu) vcpu->arch.interrupt.pending = false; } +static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu) +{ + int word_index = __ffs(vcpu->arch.irq_summary); + int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); + int irq = word_index * BITS_PER_LONG + bit_index; + + clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); + if (!vcpu->arch.irq_pending[word_index]) + clear_bit(word_index, &vcpu->arch.irq_summary); + return irq; +} + +static inline void kvm_push_irq(struct kvm_vcpu *vcpu, u8 irq) +{ + set_bit(irq, vcpu->arch.irq_pending); + set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary); +} + #endif -- cgit v1.2.3