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[added,to,the,3.12,stable,tree] arm/arm64: KVM: arch_timer: Initialize cntvoff at kvm_init

Message ID 1430385911-20480-9-git-send-email-jslaby@suse.cz
State New
Headers show

Commit Message

Jiri Slaby April 30, 2015, 9:24 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 a1a64387adeeba7a34ce06f2774e81f496ee803b upstream.

Initialize the cntvoff at kvm_init_vm time, not before running the VCPUs
at the first time because that will overwrite any potentially restored
values from user space.

Cc: Andre Przywara <andre.przywara@linaro.org>
Acked-by: Marc Zynger <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 ++
 virt/kvm/arm/vgic.c | 1 -
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 9c697db2787e..847d2804253c 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -137,6 +137,8 @@  int kvm_arch_init_vm(struct kvm *kvm, unsigned long type)
 	if (ret)
 		goto out_free_stage2_pgd;
 
+	kvm_timer_init(kvm);
+
 	/* Mark the initial VMID generation invalid */
 	kvm->arch.vmid_gen = 0;
 
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index b001dbff0f38..14d7b51bb223 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1410,7 +1410,6 @@  int kvm_vgic_init(struct kvm *kvm)
 	for (i = VGIC_NR_PRIVATE_IRQS; i < VGIC_NR_IRQS; i += 4)
 		vgic_set_target_reg(kvm, 0, i);
 
-	kvm_timer_init(kvm);
 	kvm->arch.vgic.ready = true;
 out:
 	mutex_unlock(&kvm->lock);