[IA64] enable trap code on slot 1
authorTony Luck <tony.luck@intel.com>
Tue, 14 Nov 2006 17:33:38 +0000 (09:33 -0800)
committerTony Luck <tony.luck@intel.com>
Tue, 12 Dec 2006 20:00:55 +0000 (12:00 -0800)
commit08ed38b68099f2a492196414b08a7f5dd8dc3537
tree1be49040ba10db0fefc16a31c4ee13461c50e131
parent75f6a1de41f90543792403bf0ffb3ead59d0d8cc
[IA64] enable trap code on slot 1

Because slot 1 of one instr bundle crosses border of two consecutive
8-bytes, kprobe on slot 1 is disabled. This patch enables kprobe on
slot1, it only replaces higher 8-bytes of the instruction bundle and
changes the exception code to ignore the low 12 bits of the break
number (which is across the border in the lower 8-bytes of the bundle).

For those instructions which must execute regardless qp bits,
kprobe on slot 1 is still disabled.

Signed-off-by: bibo,mao <bibo.mao@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
arch/ia64/kernel/jprobes.S
arch/ia64/kernel/kprobes.c
include/asm-ia64/break.h
include/asm-ia64/kprobes.h