From: Christoffer Dall <christoffer.dall@linaro.org>
Date: Tue, 2 Dec 2014 14:27:51 +0000 (+0100)
Subject: arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag
X-Git-Tag: v3.12.42~10
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9177e8d7ad081480234c6ff59d98f941413a6b2c;p=thirdparty%2Fkernel%2Fstable.git

arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag

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>
---

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index bac1ba5b39609..7dc8e010c2003 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;