[PATCH V2] ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU

[Christoffer Dall]

On Thu, Jul 31, 2014 at 12:23:23PM +0530, Pranavkumar Sawargaonkar wrote:
> X-Gene u-boot runs in EL2 mode with MMU enabled hence we might
> have stale EL2 tlb enteris when we enable EL2 MMU on each host CPU.
> 
> This can happen on any ARM/ARM64 board running bootloader in
> Hyp-mode (or EL2-mode) with MMU enabled.
> 
> This patch ensures that we flush all Hyp-mode (or EL2-mode) TLBs
> on each host CPU before enabling Hyp-mode (or EL2-mode) MMU.
> 
> Changelog:
> 
> V2:
>  - Flush Hyp-mode TLBs for both KVM ARM32 and KVM ARM64 at boot time
> 
> V1:
>  - Initial patch with only arm64 change
> 
> Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar at linaro.org>
> Signed-off-by: Anup Patel <anup.patel at linaro.org>

Reviewed-by: Christoffer Dall <christoffer.dall at linaro.org>