From 0ad3bed6c5ec6dbb093a26802c85088a85fb9757 Mon Sep 17 00:00:00 2001
From: Paolo Bonzini <pbonzini@redhat.com>
Date: Mon, 19 Dec 2016 15:23:54 +0100
Subject: [PATCH] kvm: nVMX: move nested events check to kvm_vcpu_running
vcpu_run calls kvm_vcpu_running, not kvm_arch_vcpu_runnable,
and the former does not call check_nested_events.
Once KVM_REQ_EVENT is removed from the APICv interrupt injection
path, however, this would leave no place to trigger a vmexit
from L2 to L1, causing a missed interrupt delivery while in guest
mode. This is caught by the "ack interrupt on exit" test in
vmx.flat.
[This does not change the calls to check_nested_events in
inject_pending_event. That is material for a separate cleanup.]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/x86.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2f64e5d0ae534..204793f0f0e2d 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7023,6 +7023,9 @@ static inline int vcpu_block(struct kvm *kvm, struct kvm_vcpu *vcpu)
static inline bool kvm_vcpu_running(struct kvm_vcpu *vcpu)
{
+ if (is_guest_mode(vcpu) && kvm_x86_ops->check_nested_events)
+ kvm_x86_ops->check_nested_events(vcpu, false);
+
return (vcpu->arch.mp_state == KVM_MP_STATE_RUNNABLE &&
!vcpu->arch.apf.halted);
}
@@ -8389,9 +8392,6 @@ static inline bool kvm_vcpu_has_events(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
{
- if (is_guest_mode(vcpu) && kvm_x86_ops->check_nested_events)
- kvm_x86_ops->check_nested_events(vcpu, false);
-
return kvm_vcpu_running(vcpu) || kvm_vcpu_has_events(vcpu);
}
--
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