[PATCH] don't enter guest after SIPI was received by a CPU

[Gleb Natapov <gleb@qumranet.com>]

Don't enter guest after SIPI was issued.

CPU should process SIPI message before entering a guest mode again.
kvm_arch_vcpu_runnable() return true if CPU is in SIPI state, so
we can't call it here.

Signed-off-by: Gleb Natapov <gleb@qumranet.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 61eddbe..612099f 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -3239,7 +3239,7 @@ static int __vcpu_run(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
 
 	r = 1;
 	while (r > 0) {
-		if (kvm_arch_vcpu_runnable(vcpu))
+		if (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE)
 			r = vcpu_enter_guest(vcpu, kvm_run);
 		else {
 			up_read(&vcpu->kvm->slots_lock);
--
			Gleb.