[PATCHv7 7/8] kvm: rearrange injection cancelling code

Michael S. Tsirkin
2012-06-14T13:53:25Z

Each time we need to cancel injection we invoke same code
(cancel_injection callback). Move it towards the end of function using
the familiar goto on error pattern.

Will make it easier to do more cleanups for PV EOI.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
arch/x86/kvm/x86.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4e582c0..cb19d3b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5296,8 +5296,7 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)

r = kvm_mmu_reload(vcpu);
if (unlikely(r)) {
- kvm_x86_ops->cancel_injection(vcpu);
- goto out;
+ goto cancel_injection;
}

preempt_disable();
@@ -5322,9 +5321,8 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
smp_wmb();
local_irq_enable();
preempt_enable();
- kvm_x86_ops->cancel_injection(vcpu);
r = 1;
- goto out;
+ goto cancel_injection;
}

srcu_read_unlock(&vcpu->kvm->srcu, vcpu->srcu_idx);
@@ -5392,6 +5390,10 @@ static int vcpu_enter_guest(struct kvm_vcpu *vcpu)
kvm_lapic_sync_from_vapic(vcpu);

r = kvm_x86_ops->handle_exit(vcpu);
+ return r;
+
+cancel_injection:
+ kvm_x86_ops->cancel_injection(vcpu);
out:
return r;
}
--
MST