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[PULL,12/21] KVM: arm/arm64: check power_off in critical section before VCPU run

Message ID 1446648600-27297-13-git-send-email-christoffer.dall@linaro.org
State New
Headers show

Commit Message

Christoffer Dall Nov. 4, 2015, 2:49 p.m. UTC 
From: Eric Auger <eric.auger@linaro.org>


In case a vcpu off PSCI call is called just after we executed the
vcpu_sleep check, we can enter the guest although power_off
is set. Let's check the power_off state in the critical section,
just before entering the guest.

Signed-off-by: Eric Auger <eric.auger@linaro.org>

Reported-by: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>

Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

---
 arch/arm/kvm/arm.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

-- 
2.1.2.330.g565301e.dirty


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diff mbox

Patch

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index d04deeb..3b3384c 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -560,7 +560,8 @@  int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 			run->exit_reason = KVM_EXIT_INTR;
 		}
 
-		if (ret <= 0 || need_new_vmid_gen(vcpu->kvm)) {
+		if (ret <= 0 || need_new_vmid_gen(vcpu->kvm) ||
+			vcpu->arch.power_off) {
 			local_irq_enable();
 			kvm_timer_sync_hwstate(vcpu);
 			kvm_vgic_sync_hwstate(vcpu);