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

[Marc Zyngier]

On 04/08/14 13:06, Christoffer Dall wrote:
> 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>

Acked-by: Marc Zyngier <marc.zyngier at arm.com>

This should probably go in quickly as a fix.

Thanks,

	M.
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