[RFC][PATCH 1/1] ARM: Add initial hibernation support

[Hiroshi DOYU]

From: ext Russell King - ARM Linux <linux at arm.linux.org.uk>
Subject: Re: [RFC][PATCH 1/1] ARM: Add initial hibernation support
Date: Thu, 15 Jul 2010 10:41:18 +0200

> On Thu, Jul 15, 2010 at 08:34:50AM +0300, Hiroshi DOYU wrote:
>> Russell, would it be possible to put this into your next merge queue?
> 
> I think it needs quite a bit of rework - I certainly don't like all
> those CP15 register accesses there - that's asking for lots of ifdefs
> to spring up as more CPUs are supported.
>
> Eg, what about ensuring that state such as iWMMXt on PXA CPUs is
> properly restored?

Right. This arch specific part can be something like
"suspend-v[3-7].S" to accomodate those differences

> We already have code which knows what needs to be saved across a
> power-off transition - its what we use for our normal suspend/resume
> functionality, so we should look at re-using that code for hibernate
> as well.  We really don't want to be maintaining two sets of code
> doing the same thing.

Could you explain which code you're refering for the existing one?