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Commit 867767a3 authored by Amit Shah's avatar Amit Shah Committed by Avi Kivity
Browse files

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: default avatarAmit Shah <amit.shah@qumranet.com>
Signed-off-by: default avatarAvi Kivity <avi@qumranet.com>
parent d98e6346

arch/x86/kvm/irq.c

+11 −0
Original line number Diff line number Diff line
@@ -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);

}

arch/x86/kvm/irq.h

+2 −0
Original line number Diff line number Diff line
@@ -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);