From: Gleb Natapov <gleb@redhat.com>
Date: Tue, 7 Jul 2009 12:27:32 +0000 (+0300)
Subject: KVM: No need to kick cpu if not in a guest mode
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=c7f0f24b1f82ec049fcfb8e6d4e1cee2815efbe5;p=linux-beck.git

KVM: No need to kick cpu if not in a guest mode

This will save a couple of IPIs.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 95fa45c0f16e..e3d9040f2156 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3506,6 +3506,7 @@ 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;