Re: BIOS overwritten during resume (was: Re: Asus L5D resume on battery power)

[Rafael J. Wysocki]

Hi,

On Sunday, 6 of March 2005 20:41, Pavel Machek wrote:
> Hi!
> > > > Yes.  I thought about using PG_nosave in the begining, but there's a
> > > > 
> > > > BUG_ON(PageReserved(page) && PageNosave(page));
> > > > 
> > > > in swsusp.c:saveable() that I just didn't want to trigger.  It seems to me,
> > > > though, that we don't need it any more, do we?
> > > 
> > > No, we can just kill it. It was "if something unexpected happens, bail
> > > out soon".
> > 
> > OK
> > 
> > The following is what I'm comfortable with.  I didn't took the Nigel's patch
> > literally, because we do one thing differently (ie nosave pfns) and it contained
> > some changes that I thought were unnecessary.  The i386 part is
> > untested.
> 
> I'd add
> 
> >  	page = pfn_to_page(pfn);
> > -	BUG_ON(PageReserved(page) && PageNosave(page));
> 
> a comment here explaining what PageReserved && PageNosave means. 

OK, I will add the comment.

> >  	if (PageNosave(page))
> >  		return 0;
> > +
> >  	if (PageReserved(page) && pfn_is_nosave(pfn)) {
> >  		pr_debug("[nosave pfn 0x%lx]", pfn);
> >  		return 0;
> 
> AFAICT it only fixes "potential" bug, so it can probably wait. Once
> non-contiguous and initramfs patches are in, this can go...

OK

Greets,
Rafael


-- 
- Would you tell me, please, which way I ought to go from here?
- That depends a good deal on where you want to get to.
		-- Lewis Carroll "Alice's Adventures in Wonderland"
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