diff options
| author | Andrew Morton <akpm@osdl.org> | 2004-02-07 17:43:12 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@home.osdl.org> | 2004-02-07 17:43:12 -0800 |
| commit | 5a848d7da7e865e7fd845d2d06acff1d60984094 (patch) | |
| tree | 6d164435813b097b3feb43c49aca98a1f5672543 /include | |
| parent | 56d40f649bd538b7089971a5a30aa302af9ea7d3 (diff) | |
[PATCH] cciss: disble prefetching in ASIC
From: mikem@beardog.cca.cpqcorp.net
This patch addresses a bug in the ASIC on the 6400 series controllers. When
prefetching from host memory we grab an extra 750 or so bytes of data. If
this occurs on a memory boundary the machine will MCA. This bug affects IPF
and Alpha based platforms. It is not known to be a problem on x86.
Prefetch will be disabled via the f/w. We need to enable it on x86 to
address a _big_ performance hit on RAID 1 operations.
It is in the 2.4 tree.
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions