[PATCH 19/26] KVM: PPC: Update int_pending also on dequeue

[Alexander Graf]

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 at suse.de>
---
 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