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| author | Jack Steiner | 2009-12-16 01:48:11 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2009-12-16 16:20:15 +0100 |
| commit | 67bf04a5c2574e9495f660f418f6df776821d578 (patch) | |
| tree | ff28ab4983b007136da88786c8966ea1598841a0 /drivers/misc/sgi-gru/grufile.c | |
| parent | gru: check for valid vma (diff) | |
| download | kernel-qcow2-linux-67bf04a5c2574e9495f660f418f6df776821d578.tar.gz kernel-qcow2-linux-67bf04a5c2574e9495f660f418f6df776821d578.tar.xz kernel-qcow2-linux-67bf04a5c2574e9495f660f418f6df776821d578.zip | |
gru: fix prefetch and speculation bugs
Fix several bugs related to prefetch, ordering & speculation:
- GRU cch_allocate() instruction causes cacheable memory
to be created. Add a barriers to prevent speculation
from prefetching data before it exists.
- Add memory barriers before cache-flush instructions to ensure
that previously stored data is included in the line flushed to memory.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru/grufile.c')
0 files changed, 0 insertions, 0 deletions