Re: [v3 PATCH 0/3] ppc32/kprobe: Fix a bug for kprobe stwu r1
flat view
From: tiejun.chen <hidden>
Date: 2012-06-03 05:16:01
On 06/03/2012 01:07 PM, Tiejun Chen wrote:
Changes from V2: * populate those existed codes to reorganize codes * add check if we'll trigger kernel stack over flow
BTW, I always validate this on mpc8536ds(UP)/mpc8572ds(SMP) with/without CONFIG_PREEMPT. Tiejun
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(-)
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev