Commit 934bf653 authored Nov 16, 2015 by Matt Gingell Committed by Paolo Bonzini Nov 18, 2015

KVM: x86: set KVM_REQ_EVENT on local interrupt request from user space



Set KVM_REQ_EVENT when a PIC in user space injects a local interrupt.

Currently a request is only made when neither the PIC nor the APIC is in
the kernel, which is not sufficient in the split IRQ chip case.

This addresses a problem in QEMU where interrupts are delayed until
another path invokes the event loop.

Reviewed-by: Steve Rutherford <srutherford@google.com>
Signed-off-by: Matt Gingell <gingell@google.com>
Fixes: 1c1a9ce9
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 782d422b

arch/x86/kvm/x86.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -2806,6 +2806,7 @@ static int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu,
		return -EEXIST;

		vcpu->arch.pending_external_vector = irq->irq;
		kvm_make_request(KVM_REQ_EVENT, vcpu);
		return 0;
		}