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KVM: x86: Don't sending posted interrupt if not config CONFIG_SMP

Message ID 1366246667-7599-1-git-send-email-yang.z.zhang@intel.com (mailing list archive)
State New, archived
Headers show

Commit Message

Zhang, Yang Z April 18, 2013, 12:57 a.m. UTC 
From: Yang Zhang <yang.z.zhang@Intel.com>

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
vmentry.

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

Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Yang Zhang <yang.z.zhang@Intel.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
---
 arch/x86/kvm/vmx.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
diff mbox

Patch

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))
 		apic->send_IPI_mask(get_cpu_mask(vcpu->cpu),
 				POSTED_INTR_VECTOR);
 	else
+#endif
 		kvm_vcpu_kick(vcpu);
 }