Re: [BK-2.5] [PATCH] bootmem crash fix

From: David S. Miller (davem@redhat.com)
Date: Fri Nov 22 2002 - 16:12:59 EST


   From: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
   Date: Fri, 22 Nov 2002 19:31:53 +0000

           From Roman Zippel. Don't assume that physical memory starts at
           physical address zero.
   
 Which would be a nice improvement, however:

   - free_area_init_node(0, &contig_page_data, NULL, zones_size, 0, NULL);
   + free_area_init_node(0, &contig_page_data, NULL, zones_size,
   + __pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL);

__pa(PAGE_OFFSET) is not necessarily the first physical address in
the system either.

I've never seen this even implied to be the case :-)
In any event, it isn't well defined and we should make it
so.
-
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