Re: MM with fragmented memory
Jamie Lokier (lkd@tantalophile.demon.co.uk)
Sun, 25 Oct 1998 19:10:15 +0000
On Fri, Oct 23, 1998 at 08:15:50PM +0200, Werner Almesberger wrote:
> Then there's another problem, of course: the size of the kernel's memory
> map is proportional to end_mem-start_mem, so if I pretend to have a few
> MB worth of RAM between start_mem and end_mem, it'll quickly grow to a
> few hundreds of kilobytes.
You don't have to arrange the memory map this way. Try changing the
definition of MAP_NR to use a small lookup table or even a calculation
(if the memory layout is regular) for the upper page address bits.
-- Jamie
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