Patch "arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag" has been added to the 3.14-stable tree

Patch "arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag" has been added to the 3.14-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

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

to the 3.14-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     arm-arm64-kvm-don-t-clear-the-vcpu_power_off-flag.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 03f1d4c17edb31b41b14ca3a749ae38d2dd6639d Mon Sep 17 00:00:00 2001
From: Christoffer Dall <christoffer.dall@linaro.org>
Date: Tue, 2 Dec 2014 15:27:51 +0100
Subject: arm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag

From: Christoffer Dall <christoffer.dall@linaro.org>

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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -678,7 +678,7 @@ static int kvm_arch_vcpu_ioctl_vcpu_init
 	/*
 	 * 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;


Patches currently in stable-queue which might be from christoffer.dall@linaro.org are

queue-3.14/arm-arm64-kvm-ensure-memslots-are-within-kvm_phys_size.patch
queue-3.14/arm-arm64-kvm-don-t-clear-the-vcpu_power_off-flag.patch
queue-3.14/arm-arm64-kvm-correct-kvm_arm_vcpu_init-power-off-option.patch
queue-3.14/arm-arm64-kvm-don-t-allow-creating-vcpus-after-vgic_initialized.patch
queue-3.14/arm-arm64-kvm-fix-potential-null-dereference-in.patch
queue-3.14/arm64-kvm-fix-unmapping-with-48-bit-vas.patch
queue-3.14/arm-arm64-kvm-fix-set_clear_sgi_pend_reg-offset.patch
queue-3.14/arm-kvm-strict_mm_typechecks-fix-for-user_mem_abort.patch
queue-3.14/arm-arm64-kvm-fix-use-of-wnr-bit-in-kvm_is_write_fault.patch
queue-3.14/arm-kvm-fix-cpu-hotplug.patch
queue-3.14/arm-arm64-kvm-fix-vttbr_baddr_mask-and-pgd-alloc.patch
queue-3.14/arm-arm64-kvm-introduce-stage2_unmap_vm.patch
queue-3.14/arm-arm64-kvm-vgic-fix-error-code-in-kvm_vgic_create.patch
queue-3.14/kvm-arm-vgic-plug-irq-injection-race.patch
queue-3.14/arm-arm64-kvm-reset-the-hcr-on-each-vcpu-when-resetting-the.patch