The following series replaces the ptrace helpers used for single step
enable/disable for uprobes on powerpc, with uprobe specific code.
We reuse the kprobe code to enable single stepping by making it generic
and save/restore the MSR (and DBCR for BookE) across the single step.
This series applies on top of the patches posted by Oleg at :
https://lkml.org/lkml/2012/10/28/92
Patches have been verified on Power6 and PPC440 (BookE).
Changes since V1:
* Don't disable external interrupts. (Sebastian)
* Introduced routines for saving/restoring the context for sstep.
* Restore the context in arch_uprobe_abort_xol() (Oleg)
---
Suzuki K. Poulose (4):
kprobes/powerpc: Do not disable External interrupts during single step
powerpc: Move the single step enable code to a generic path
uprobes/powerpc: Introduce routines for save/restore context
uprobes/powerpc: Make use of generic routines to enable single step
arch/powerpc/include/asm/probes.h | 25 +++++++++++++++++++++++++
arch/powerpc/include/asm/uprobes.h | 4 ++++
arch/powerpc/kernel/kprobes.c | 21 +--------------------
arch/powerpc/kernel/uprobes.c | 32 +++++++++++++++++++++++++-------
4 files changed, 55 insertions(+), 27 deletions(-)
--
Suzuki
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