From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gleb Natapov <gleb@redhat.com>
Subject: [PATCH] No need to kick cpu if not in a guest mode.
Date: Tue, 7 Jul 2009 15:27:32 +0300
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This will save a couple of IPIs.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index efb0b68..1e30400 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3498,6 +3498,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 	smp_mb__after_clear_bit();
 
 	if (vcpu->requests || need_resched() || signal_pending(current)) {
+		set_bit(KVM_REQ_KICK, &vcpu->requests);
 		local_irq_enable();
 		preempt_enable();
 		r = 1;
--
			Gleb.