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[added,to,the,3.12,stable,tree] arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag

Message ID 1430385911-20480-54-git-send-email-jslaby@suse.cz
State New
Headers show

Commit Message

Jiri Slaby April 30, 2015, 9:25 a.m. UTC 
From: Christoffer Dall <christoffer.dall@linaro.org>

This patch has been added to the 3.12 stable tree. If you have any
objections, please let us know.
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Patch

===============

commit 03f1d4c17edb31b41b14ca3a749ae38d2dd6639d upstream.

If a VCPU was originally started with power off (typically to be brought
up by PSCI in SMP configurations), there is no need to clear the
POWER_OFF flag in the kernel, as this flag is only tested during the
init ioctl itself.

Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 arch/arm/kvm/arm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index bac1ba5b3960..7dc8e010c200 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -676,7 +676,7 @@  static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
 	/*
 	 * Handle the "start in power-off" case by marking the VCPU as paused.
 	 */
-	if (__test_and_clear_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
+	if (test_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
 		vcpu->arch.pause = true;
 
 	return 0;