lkml.org 
[lkml]   [2008]   [May]   [7]   [last100]   RSS Feed
Views: [more markup]   [less markup]   [headers]   [forward]  
 
Messages in this thread
/
DateThu, 8 May 2008 01:02:42 +0200
FromAndrea Arcangeli <>
SubjectRe: [PATCH 08 of 11] anon-vma-rwsem
To remove mm_lock without adding an horrible system-wide lock before
every i_mmap_lock etc.. we've to remove
invalidate_range_begin/end. Then we can return to an older approach of
doing only invalidate_page and serializing it with the PT lock against
get_user_pages. That works fine for KVM but GRU will have to flush the
tlb once every time we drop the PT lock, that means once per each 512
ptes on x86-64 etc... instead of a single time for the whole range
regardless how large the range is.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2008-05-07 23:05    [W:0.237 / U:0.270 seconds]
©2003-2008 Jasper Spaans