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| author | Benjamin LaHaise <bcrl@kvack.org> | 2005-07-12 20:58:22 (GMT) |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-07-12 23:01:01 (GMT) |
| commit | c40504e87e28c52258458a53fefcd63f58e11a42 (patch) | |
| tree | 6801c0867e480d80e4bd889662c7bd04f4075e8f /arch/xtensa/kernel/syscalls.c | |
| parent | 8b8a9da525c592f129ace454c4d82a80b122827a (diff) | |
| download | linux-fsl-qoriq-c40504e87e28c52258458a53fefcd63f58e11a42.tar.xz | |
[PATCH] uml: tlb flushing fix
This patch fixes a fairly serious tlb flushing bug that makes aio use under
uml very unreliable -- SEGVs, Oops and panic()s occur as a result of stale
tlb entires being used by uml when aio switches mms due to the fact that
uml does not implement the activate_mm() hook. This patch introduces a
simple but correct approach (read: hammer) for implementing activate_mm()
in uml by doing a force_flush_all() if the new mm is different from old.
With this patch in place, uml is able to succeed at the aio test case that
was randomly faulting for me before.
Cc: Jeff Dike <jdike@addtoit.com>
Cc: <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch/xtensa/kernel/syscalls.c')
0 files changed, 0 insertions, 0 deletions