On Thu, Aug 15, 2013 at 01:28:23PM +0900, Jonghwan Choi wrote:
> From: Marc Zyngier <marc.zyngier@xxxxxxx>
>
> This patch looks like it should be in the 3.10-stable tree, should we apply
> it?
Yes, please. Thanks.
>
> ------------------
>
> From: "Marc Zyngier <marc.zyngier@xxxxxxx>"
>
> commit 479c5ae2f8a55509b691494cd13691d3dc31d102 upstream
>
> When performing a Stage-2 TLB invalidation, it is necessary to
> make sure the write to the page tables is observable by all CPUs.
>
> For this purpose, add a dsb instruction to __kvm_tlb_flush_vmid_ipa
> before doing the TLB invalidation itself.
>
> Cc: <stable@xxxxxxxxxxxxxxx> # 3.10.x: 6a077e4a: ARM: KVM: perform
> Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
> Signed-off-by: Christoffer Dall <christoffer.dall@xxxxxxxxxx>
> Signed-off-by: Jonghwan Choi <jhbird.choi@xxxxxxxxxxx>
> ---
> arch/arm/kvm/interrupts.S | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/kvm/interrupts.S b/arch/arm/kvm/interrupts.S
> index bc7892ba1..ba904c0 100644
> --- a/arch/arm/kvm/interrupts.S
> +++ b/arch/arm/kvm/interrupts.S
> @@ -46,6 +46,7 @@ __kvm_hyp_code_start:
> ENTRY(__kvm_tlb_flush_vmid)
> push {r2, r3}
>
> + dsb ishst
> add r0, r0, #KVM_VTTBR
> ldrd r2, r3, [r0]
> mcrr p15, 6, r2, r3, c2 @ Write VTTBR
> --
> 1.8.1.2
>
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html