Changes from V2:
* populate those existed codes to reorganize codes
* add check if we'll trigger kernel stack over flow
Changes from V1:
* use memcpy simply to withdraw copy_exc_stack
* add !(regs->msr & MSR_PR)) and
WARN_ON(test_thread_flag(TIF_EMULATE_STACK_STORE));
to make sure we're in goot path.
* move this migration process inside 'restore'
* clear TIF flag atomically
Tiejun Chen (3):
powerpc/kprobe: introduce a new thread flag
ppc32/kprobe: complete kprobe and migrate exception frame
ppc32/kprobe: don't emulate store when kprobe stwu r1
arch/powerpc/include/asm/thread_info.h | 3 ++
arch/powerpc/kernel/entry_32.S | 43 ++++++++++++++++++++++++++-----
arch/powerpc/lib/sstep.c | 37 ++++++++++++++++++++++++++-
3 files changed, 74 insertions(+), 9 deletions(-)
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