This is a note to let you know that I've just added the patch titled
ARM64: KVM: store kvm_vcpu_fault_info est_el2 as word
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:
arm64-kvm-store-kvm_vcpu_fault_info-est_el2-as-word.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@xxxxxxxxxxxxxxx> know about it.
>From ba083d20d8cfa9e999043cd89c4ebc964ccf8927 Mon Sep 17 00:00:00 2001
From: Victor Kamensky <victor.kamensky@xxxxxxxxxx>
Date: Thu, 12 Jun 2014 09:30:09 -0700
Subject: ARM64: KVM: store kvm_vcpu_fault_info est_el2 as word
From: Victor Kamensky <victor.kamensky@xxxxxxxxxx>
commit ba083d20d8cfa9e999043cd89c4ebc964ccf8927 upstream.
esr_el2 field of struct kvm_vcpu_fault_info has u32 type.
It should be stored as word. Current code works in LE case
because existing puts least significant word of x1 into
esr_el2, and it puts most significant work of x1 into next
field, which accidentally is OK because it is updated again
by next instruction. But existing code breaks in BE case.
Signed-off-by: Victor Kamensky <victor.kamensky@xxxxxxxxxx>
Acked-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
Acked-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Signed-off-by: Shannon Zhao <shannon.zhao@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kvm/hyp.S | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/kvm/hyp.S
+++ b/arch/arm64/kvm/hyp.S
@@ -830,7 +830,7 @@ el1_trap:
mrs x2, far_el2
2: mrs x0, tpidr_el2
- str x1, [x0, #VCPU_ESR_EL2]
+ str w1, [x0, #VCPU_ESR_EL2]
str x2, [x0, #VCPU_FAR_EL2]
str x3, [x0, #VCPU_HPFAR_EL2]
Patches currently in stable-queue which might be from victor.kamensky@xxxxxxxxxx are
queue-3.14/arm64-kvm-store-kvm_vcpu_fault_info-est_el2-as-word.patch
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