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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: 1c1a9ce973
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
hifive-unleashed-5.1
Matt Gingell 2015-11-16 15:26:05 -08:00 committed by Paolo Bonzini
parent 782d422bca
commit 934bf65354
1 changed files with 1 additions and 0 deletions
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arch/x86/kvm/x86.c
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@ -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;
}