x86, pageattr: introduce APIs to change pageattr of a page array

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Add array interface APIs of pageattr. page based cache flush is quite
slow for a lot of pages. If pages are more than 1024 (4M), the patch
will use a wbinvd(). We have a simple test here (run a 3d game - open
arena), nearly all agp memory allocation are small (< 1M), so suppose
this will not impact runtime performance.

Signed-off-by: Dave Airlie <airlied@gmail.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Shaohua Li 2008-08-21 10:46:06 +08:00 • committed by Ingo Molnar

parent cacf890694

commit d75586ad01

2 changed files with 169 additions and 50 deletions

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216

arch/x86/mm/pageattr.c

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3

include/asm-x86/cacheflush.h

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