diff options
| author | Rusty Lynch <rusty.lynch@intel.com> | 2005-06-23 00:09:31 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-23 09:45:23 -0700 |
| commit | 13608d6433eb34840224ef632cc444f3eb59bc13 (patch) | |
| tree | 249c668170713eac16abe94877ff71628e04b360 /arch | |
| parent | 8bc76772ad653bcaad1b0af72aafb6072ef0fa87 (diff) | |
| download | op-kernel-dev-13608d6433eb34840224ef632cc444f3eb59bc13.zip op-kernel-dev-13608d6433eb34840224ef632cc444f3eb59bc13.tar.gz | |
[PATCH] Kprobes ia64 qp fix
Fix a bug where a kprobe still fires when the instruction is predicated
off. So given the p6=0, and we have an instruction like:
(p6) move loc1=0
we should not be triggering the kprobe. This is handled by carrying over
the qp section of the original instruction into the break instruction.
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Rusty Lynch <Rusty.lynch@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/kernel/kprobes.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/ia64/kernel/kprobes.c b/arch/ia64/kernel/kprobes.c index b7a2041..98bef04 100644 --- a/arch/ia64/kernel/kprobes.c +++ b/arch/ia64/kernel/kprobes.c @@ -115,19 +115,19 @@ int arch_prepare_kprobe(struct kprobe *p) case 0: major_opcode = (bundle->quad0.slot0 >> SLOT0_OPCODE_SHIFT); kprobe_inst = bundle->quad0.slot0; - bundle->quad0.slot0 = BREAK_INST; + bundle->quad0.slot0 = BREAK_INST | (0x3f & kprobe_inst); break; case 1: major_opcode = (bundle->quad1.slot1_p1 >> SLOT1_p1_OPCODE_SHIFT); kprobe_inst = (bundle->quad0.slot1_p0 | (bundle->quad1.slot1_p1 << (64-46))); - bundle->quad0.slot1_p0 = BREAK_INST; + bundle->quad0.slot1_p0 = BREAK_INST | (0x3f & kprobe_inst); bundle->quad1.slot1_p1 = (BREAK_INST >> (64-46)); break; case 2: major_opcode = (bundle->quad1.slot2 >> SLOT2_OPCODE_SHIFT); kprobe_inst = bundle->quad1.slot2; - bundle->quad1.slot2 = BREAK_INST; + bundle->quad1.slot2 = BREAK_INST | (0x3f & kprobe_inst); break; } |
