* removing pages from the kernel mappings completely....
@ 2008-06-30 1:37 Dave Airlie
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From: Dave Airlie @ 2008-06-30 1:37 UTC (permalink / raw)
To: Linux Memory Management
Another thing we are contemplating to avoid having to do a lot of
changes to kernel mappings to move pages from cached to uncached
mappings, is to use highmem pages where we can, but also remove a set
of pages from the kernel page mappings if we didn't have any highmem.
This would allow us to remove those pages when we bring pages into a
pool, and then we can control the userspace and kernel maps of these
pages for cached/uncached uses from that point on, without having to
go through a page remapping for the kernel pages every time.
Dave.
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