All of lore.kernel.org
 help / color / mirror / Atom feed
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2] ARM/ARM64: KVM: Nuke Hyp-mode tlbs before enabling MMU
Date: Fri, 22 Aug 2014 10:03:43 +0100	[thread overview]
Message-ID: <53F7076F.1010502@arm.com> (raw)
In-Reply-To: <20140804120648.GB524@cbox>

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@linaro.org>
>> Signed-off-by: Anup Patel <anup.patel@linaro.org>
> 
> Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>

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

This should probably go in quickly as a fix.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

  reply	other threads:[~2014-08-22  9:03 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
2014-08-22  9:03   ` Marc Zyngier [this message]
2014-08-04 13:26 ` Marc Zyngier
2014-08-22 10:23 ` Mark Rutland
2014-08-22 10:41   ` Marc Zyngier

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=53F7076F.1010502@arm.com \
    --to=marc.zyngier@arm.com \
    --cc=linux-arm-kernel@lists.infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.