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From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2] ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU
Date: Mon, 4 Aug 2014 14:06:48 +0200	[thread overview]
Message-ID: <20140804120648.GB524@cbox> (raw)
In-Reply-To: <1406789604-10533-1-git-send-email-pranavkumar@linaro.org>

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@linaro.org>
> Signed-off-by: Anup Patel <anup.patel@linaro.org>

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

  reply	other threads:[~2014-08-04 12:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-31  6:53 [PATCH V2] ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU Pranavkumar Sawargaonkar
2014-08-04 12:06 ` Christoffer Dall [this message]
2014-08-22  9:03   ` Marc Zyngier
2014-08-04 13:26 ` Marc Zyngier
2014-08-22 10:23 ` Mark Rutland
2014-08-22 10:41   ` Marc Zyngier

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