FYI
http://lkml.org/lkml/2004/6/29/57
On 4/13/05, Coywolf Qi Hunt <[email protected]> wrote:
> I told rmk about this long time ago.
>
> On 4/12/05, [email protected] <[email protected]> wrote:
> >
> > From: Russell King <[email protected]>
> >
> > Oddly, max_low_pfn/max_pfn end up being the number of pages in the system,
> > rather than the maximum PFN on ARM. This doesn't seem to cause any problems,
> > so just add a note about it.
> >
> > Signed-off-by: Russell King <[email protected]>
> > Signed-off-by: Andrew Morton <[email protected]>
> > ---
> >
> > 25-akpm/arch/arm/mm/init.c | 3 +++
> > 1 files changed, 3 insertions(+)
> >
> > diff -puN arch/arm/mm/init.c~arm-add-comment-about-max_low_pfn-max_pfn arch/arm/mm/init.c
> > --- 25/arch/arm/mm/init.c~arm-add-comment-about-max_low_pfn-max_pfn 2005-04-12 03:21:04.967381744 -0700
> > +++ 25-akpm/arch/arm/mm/init.c 2005-04-12 03:21:04.971381136 -0700
> > @@ -223,6 +223,9 @@ find_memend_and_nodes(struct meminfo *mi
> > * This doesn't seem to be used by the Linux memory
> > * manager any more. If we can get rid of it, we
> > * also get rid of some of the stuff above as well.
> > + *
> > + * Note: max_low_pfn and max_pfn reflect the number
> > + * of _pages_ in the system, not the maximum PFN.
> > */
> > max_low_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
> > max_pfn = memend_pfn - O_PFN_DOWN(PHYS_OFFSET);
> > _
>
> --
> Coywolf Qi Hunt
> http://sosdg.org/~coywolf/
>
--
Coywolf Qi Hunt
http://sosdg.org/~coywolf/
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