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| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2017-06-08 22:16:55 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-08-24 09:19:01 +0300 |
| commit | ec4189c4e8eea0c5e7c9b71cb1502cdcbb32aa17 (patch) | |
| tree | 78bddbbfa57654f5e61462f6e90f083aff282d55 /arch/powerpc/kernel/optprobes_head.S | |
| parent | a9dadc1c512807f955f0799e85830b420da47932 (diff) | |
| download | linux-ec4189c4e8eea0c5e7c9b71cb1502cdcbb32aa17.tar.xz | |
powerpc/kprobes: Don't save/restore DAR/DSISR to/from pt_regs for optprobes
We don't save/restore these across a trap, or with KPROBES_ON_FTRACE.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/optprobes_head.S')
| -rw-r--r-- | arch/powerpc/kernel/optprobes_head.S | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/optprobes_head.S b/arch/powerpc/kernel/optprobes_head.S index 4937bef7652f..52fc864cdec4 100644 --- a/arch/powerpc/kernel/optprobes_head.S +++ b/arch/powerpc/kernel/optprobes_head.S @@ -60,10 +60,6 @@ optprobe_template_entry: std r5,_CCR(r1) lbz r5,PACASOFTIRQEN(r13) std r5,SOFTE(r1) - mfdar r5 - std r5,_DAR(r1) - mfdsisr r5 - std r5,_DSISR(r1) /* * We may get here from a module, so load the kernel TOC in r2. @@ -122,10 +118,6 @@ optprobe_template_call_emulate: mtxer r5 ld r5,_CCR(r1) mtcr r5 - ld r5,_DAR(r1) - mtdar r5 - ld r5,_DSISR(r1) - mtdsisr r5 REST_GPR(0,r1) REST_10GPRS(2,r1) REST_10GPRS(12,r1) |