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authorAmit Shah <amit.shah@qumranet.com>2008-06-27 15:55:02 +0300
committerAvi Kivity <avi@qumranet.com>2008-10-15 10:15:12 +0200
commit867767a365ee74a3adcfaba27075eefb66b14bfd (patch)
tree896716e81ff5e13f47a15221e66d0aceeeb9456a /arch/x86
parentd98e6346350ac909f095768beb28b82368bd126f (diff)
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KVM: Introduce kvm_set_irq to inject interrupts in guests
This function injects an interrupt into the guest given the kvm struct, the (guest) irq number and the interrupt level. Signed-off-by: Amit Shah <amit.shah@qumranet.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kvm/irq.c11
-rw-r--r--arch/x86/kvm/irq.h2
2 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/kvm/irq.c b/arch/x86/kvm/irq.c
index 76d736b5f66..0d9e55275af 100644
--- a/arch/x86/kvm/irq.c
+++ b/arch/x86/kvm/irq.c
@@ -100,3 +100,14 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
__kvm_migrate_apic_timer(vcpu);
__kvm_migrate_pit_timer(vcpu);
}
+
+/* This should be called with the kvm->lock mutex held */
+void kvm_set_irq(struct kvm *kvm, int irq, int level)
+{
+ /* Not possible to detect if the guest uses the PIC or the
+ * IOAPIC. So set the bit in both. The guest will ignore
+ * writes to the unused one.
+ */
+ kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
+ kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
+}
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 7ca47cbb48b..07ff2aef0c1 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -82,6 +82,8 @@ static inline int irqchip_in_kernel(struct kvm *kvm)
void kvm_pic_reset(struct kvm_kpic_state *s);
+void kvm_set_irq(struct kvm *kvm, int irq, int level);
+
void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);