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[PATCH] ppc64 kprobes: remove spurious MSR_SE masking 

Remove spurious MSR_SE reset during kprobe processing.
single_step_exception() already does it for us.  Reset it to be safe when
executing the fault_handler.

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
hifive-unleashed-5.1
Ananth N Mavinakayanahalli 2005-06-08 15:50:00 -07:00 committed by Linus Torvalds
parent 63224d1e8b
commit f829fd23c8
1 changed files with 1 additions and 2 deletions
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3
arch/ppc64/kernel/kprobes.c
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@ -177,8 +177,6 @@ static void resume_execution(struct kprobe *p, struct pt_regs *regs)
ret = emulate_step(regs, p->ainsn.insn[0]);
if (ret == 0)
regs->nip = (unsigned long)p->addr + 4;
regs->msr &= ~MSR_SE;
}
static inline int post_kprobe_handler(struct pt_regs *regs)
@ -215,6 +213,7 @@ static inline int kprobe_fault_handler(struct pt_regs *regs, int trapnr)
if (kprobe_status & KPROBE_HIT_SS) {
resume_execution(current_kprobe, regs);
regs->msr &= ~MSR_SE;
regs->msr |= kprobe_saved_msr;
unlock_kprobes();