Re: Help port swsusp to ppc.

[Pavel Machek <pavel@ucw.cz>]

Hi!

> > > > Well, *all* the data pages are saved, so that would be okay (even if
> > > > they changed, as I'm replacing all the data pages, that should work),
> > > > but I'm not saving kernel text for example.
> > > 
> > > Ahh... that's an interesting point. You aren't saving kernel text. I'm
> > > not sure how that could be a problem for me. I think i'll just save it
> > > along with the image though. 
> > 
> > Also pay attetion to page tables. I know that page tables "copy"
> > routine is running from are same between suspend and resume kernel.
> 
> I plan to run everything provided by the suspended kernel actually. My idea
> is to keep a handle to a page of the suspended kernel that contains that
> code and just kick into it. Copying pages to their final location without
> overriding the source pages is a bit of a funky job, but I had to do it
> already with BootX so ... I'll work on that during one of the upcoming few
> weeks hopefully, I'm a bit swamped with 3 different things at the
> moment.

You actually *know* that half of memory is free during resume, so you
can load kernel-to-be-resumed data into that free memory. That's how
swsusp works. It makes it quite simple...
								Pavel
-- 
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]