Messages in this thread | | | Subject | Re: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries | From | Benjamin Herrenschmidt <> | Date | Mon, 13 May 2013 15:51:46 +1000 |
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On Mon, 2013-05-13 at 13:21 +0800, Li Zhong wrote: > These patches try to support context tracking for Power arch, beginning with > 64-bit pSeries. The codes are ported from that of the x86_64, and in each > patch, I listed the corresponding patch for x86.
So that's yet another pile of bloat on all syscall entry/exit and exception entry/exit. What is it used for ? (I haven't followed on x86_64 side).
Cheers, Ben.
> v3: > > This version is mainly a rebasing, against 3.10-rc1, also as the common code > to handle the exception are pulled into 3.10, so there is no dependency on > tip tree. So patch #2 and #6 in previous version_2 is merged together. > > Li Zhong (5): > powerpc: Syscall hooks for context tracking subsystem > powerpc: Exception hooks for context tracking subsystem > powerpc: Exit user context on notify resume > powerpc: Use the new schedule_user API on userspace preemption > powerpc: select HAVE_CONTEXT_TRACKING for pSeries > > arch/powerpc/include/asm/context_tracking.h | 10 +++ > arch/powerpc/include/asm/thread_info.h | 7 ++- > arch/powerpc/kernel/entry_64.S | 3 +- > arch/powerpc/kernel/ptrace.c | 5 ++ > arch/powerpc/kernel/signal.c | 5 ++ > arch/powerpc/kernel/traps.c | 91 ++++++++++++++++++++------- > arch/powerpc/mm/fault.c | 16 ++++- > arch/powerpc/mm/hash_utils_64.c | 38 ++++++++--- > arch/powerpc/platforms/pseries/Kconfig | 1 + > 9 files changed, 140 insertions(+), 36 deletions(-) > create mode 100644 arch/powerpc/include/asm/context_tracking.h >
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