Hi!
> > > > > The following patch fixes Bug #4959. For this purpose it creates
> > > > > temporary page translation tables including the kernel mapping (reused)
> > > > > and the direct mapping (created from scratch) and makes swsusp switch
> > > > > to these tables right before the image is restored.
> > > > >
> > > > > The code that generates the direct mapping is based on the code in
> > > > > arch/x86_64/mm/init.c.
> > > >
> > > > Looks much better than before, but is there any reason you cannot
> > > > share the code with the mm/init.c code?
> > >
> > > I think so. I have to make the temporary page tables nosavedata or set
> > > PG_nosave on them, so that swsusp doesn't overwrite them. I'm not
> > > sure if I could do this cleanly if I used the code from mm/init.c directly.
> >
> > Just pass a flag for that.
>
> Well, the code in mm/init.c is only executed really early, before zones
> are initialized, and it uses alloc_low_page() to map memory. Thus it seems
> I only could make my code be executed next to init_memory_mapping(),
> in which case I wouldn't be able to use page flags. Apparently I'm missing
> something but now I'm too tired to think efficiently.
I guess Andi meant "add a parameter to those mm/init.c functions".
(Otoh, you have reserved area, anyway, just set all of it PG_nosave,
and you'll not need to modify mm/init.c stuff).
Pavel
--
if you have sharp zaurus hardware you don't need... you know my address
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