Re: swsusp vs pgdir
From: Pavel Machek
Date: Fri Jan 23 2004 - 11:54:02 EST
Hi!
> > Wait... wait... If the whole linear mapping isn't mapped by this flat
> > pgdir, then we have a problem, since the MMU will have to go down the
> > kernel pagetables to actually access the pages data when copying them
> > around... but at this point, we are overriding the boot kernel page
> > tables with the loader ones, so ...
>
> A new pgdir is allocated on resume that does not overlap with any pages
> being restored. See relocate_pagedir() in the code..
Look again. relocate_pagedir() does not work with hardware page
directories. Instead, it deals with swsusp data structure telling it
what to copy where.
Okay, it could use some better name...
Pavel
--
When do you have a heart between your knees?
[Johanka's followup: and *two* hearts?]
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