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| author | Keith Owens <kaos@sgi.com> | 2005-04-25 13:23:47 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-04-25 13:23:47 -0700 |
| commit | 6118ec847e8e35393efc0f88394c2f5dd48c3313 (patch) | |
| tree | 81b1eb429f1d7154ec7a36c3b6c0418ba2029f02 /arch/ia64/lib | |
| parent | f0a8d3c9ec1f82d2a41faa6c46b8db7bd5b1eb8d (diff) | |
| download | op-kernel-dev-6118ec847e8e35393efc0f88394c2f5dd48c3313.zip op-kernel-dev-6118ec847e8e35393efc0f88394c2f5dd48c3313.tar.gz | |
[IA64] __copy_user breaks on unaligned src
memcpy_mck.S::__copy_user breaks in the prefetch code under these conditions :-
* src is unaligned and
* dst is near the end of a page and
* the page after dst is unmapped.
Signed-off-by: Keith Owens <kaos@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'arch/ia64/lib')
| -rw-r--r-- | arch/ia64/lib/memcpy_mck.S | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ia64/lib/memcpy_mck.S b/arch/ia64/lib/memcpy_mck.S index 6f26ef7..3c2cd2f 100644 --- a/arch/ia64/lib/memcpy_mck.S +++ b/arch/ia64/lib/memcpy_mck.S @@ -300,7 +300,7 @@ EK(.ex_handler, (p[D]) st8 [dst1] = t15, 4*8) add src_pre_mem=0,src0 // prefetch src pointer add dst_pre_mem=0,dst0 // prefetch dest pointer and src0=-8,src0 // 1st src pointer -(p7) mov ar.lc = r21 +(p7) mov ar.lc = cnt (p8) mov ar.lc = r0 ;; TEXT_ALIGN(32) |
