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* [PATCH] KVM: x86: Don't sending posted interrupt if not config CONFIG_SMP
@ 2013-04-18  0:57 Yang Zhang
  0 siblings, 0 replies; only message in thread
From: Yang Zhang @ 2013-04-18  0:57 UTC (permalink / raw)
  To: kvm
  Cc: gleb, mtosatti, rdunlap, rientjes, sfr, linux-next, x86,
	linux-kernel, Yang Zhang

From: Yang Zhang <>

If not config smp, posted interrupt logic will not work. So we should not 
send posted interrupt and let vcpu to pick the pending interrupt before

Without this patch, the build fails when CONFIG_SMP is disabled.
Thanks Randy to report this issue.

Reported-by: Randy Dunlap <>
Signed-off-by: Yang Zhang <>
Acked-by: Randy Dunlap <>
 arch/x86/kvm/vmx.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 52b21da..d5c6b95 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -3946,10 +3946,12 @@ static void vmx_deliver_posted_interrupt(struct kvm_vcpu *vcpu, int vector)
 	r = pi_test_and_set_on(&vmx->pi_desc);
 	kvm_make_request(KVM_REQ_EVENT, vcpu);
+#ifdef CONFIG_SMP
 	if (!r && (vcpu->mode == IN_GUEST_MODE))

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2013-04-18  0:57 [PATCH] KVM: x86: Don't sending posted interrupt if not config CONFIG_SMP Yang Zhang

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