Re: [RFC][patch 0/2] mm: remove PageReserved

[Nick Piggin]

Arjan van de Ven wrote:
> On Tue, 2005-08-09 at 19:31 +1000, Nick Piggin wrote:
>
> > Arjan van de Ven wrote:

> > > and..... can we make a general page_is_ram() function that does what it
> > > says? on x86 it can go via the e820 table, other architectures can do
> > > whatever they need....
> >
> > That would be very helpful. That should cover the remaining (ab)users
> > of PageReserved.
> >
> > It would probably be fastest to implement this with a page flag,
> > however if swsusp and ioremap are the only users then it shouldn't
> > be a problem to go through slower lookups (and this would remove the
> > need for the PageValidRAM flag that I had worried about earlier).
>
>
> if you want I have implementations of this for x86, x86_64 and iirc ia64
> (not 100% sure about the later). None of these use a page flag, but use
> the same information the kernel uses during bootup to find ram.

It seems like a good idea to me, if the arch guys are up for it.
If you have a copy of the patch handy, sure send it over.

Thanks
Nick

--
SUSE Labs, Novell Inc.

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