Commit 6118ec84 authored Apr 25, 2005 by Keith Owens Committed by Tony Luck Apr 25, 2005

[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>

parent f0a8d3c9

arch/ia64/lib/memcpy_mck.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)