Re: [Bug #12872] pwc mmap always fails with EAGAIN

Arjan van de Ven
2009-03-23T14:12:18Z

On Mon, 23 Mar 2009 10:49:45 +0000
Alan Cox <alan-qBU/x9rampVanCEyBjwyrvXRex20P6io@public.gmane.org> wrote:

> > > Rename the pagerange_is_ram() to pat_pagerange_is_ram() and
> > > add the "track legacy 1MB region as non RAM" condition.
>
> But the lowest 640K are most definitely RAM.

not all of it ;)

"ram" is defined as "the kernel memory allocator knows about it and
would hand it out" in this context; BIOS owned areas are not "ram" in
this context.
--
Arjan van de Ven Intel Open Source Technology Centre
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