[PATCH] UBUNTU: SAUCE: dove: avoid page table overwrite when resuming from hibernation

Eric Miao eric.miao at canonical.com
Fri May 28 04:55:26 UTC 2010

On Fri, May 28, 2010 at 12:20 PM, Nigel Cunningham
<ncunningham at crca.org.au> wrote:
> Hi Eric.
> On 28/05/10 14:13, Eric Miao wrote:
>> Forget about upstream at this moment, since the hibernation support for
>> Dove
>> is quite specific now, and even it's going to be supported in
>> upstream, it will have
>> to made generic so other SoC can benefit. This patch isn't ready for
>> upstream yet.
> I understand that the arch isn't in upstream. I think that the issue is
> though. If I'm right, you're seeing this issue not because of a problem in
> your arch specific code, but because of a problem in vanilla that's more
> easily triggered on your arch. That's why I wanted to bring it to Rafael's
> attention.

Ah right. I seem to remember the x86 has a workaround to avoid the issue of
page table being overwritten by copying back-n-forth. I'm not sure if there are
any specific way of doing so. In ARM case, temporarily using the init page
table seems to be a workable solution, though.

> Regards,
> Nigel

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