cvs commit: src/sys/i386/i386 pmap.c
peter at wemm.org
Fri Apr 28 21:22:47 UTC 2006
On Friday 28 April 2006 12:05 pm, Peter Wemm wrote:
> ups@ had a truely evil idea that I'll investigate. It should allow
> freeing unused pages again by giving us a no-cost way to track the
> holes in the kva block.
FWIW, this idea appears to work. For the curious:
This restores the enhancement of the original smallpv patch that allows pv
pages to be freed and returned for general use. It tracks the free kva in
its block in a way that requires no memory alloc/frees, has no bitmaps, and
doesn't search anything.
ups@ scares me for thinking of this. :-)
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