When having a decrementor interrupt pending, the dequeuing happens manually
through an mtdec instruction. This instruction simply calls dequeue on that
interrupt, so the int_pending hint doesn't get updated.
This patch enables updating the int_pending hint also on dequeue, thus
correctly enabling guests to stay in guest contexts more often.
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
---
arch/powerpc/kvm/book3s.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 5fbe949..8138d31 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -201,6 +201,9 @@ static void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
{
clear_bit(kvmppc_book3s_vec2irqprio(vec),
&vcpu->arch.pending_exceptions);
+
+ if (!vcpu->arch.pending_exceptions)
+ vcpu->arch.shared->int_pending = 0;
}
void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
--
1.6.0.2
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