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SubjectRe: [RFC PATCH v3 0/5] powerpc: Support context tracking for Power pSeries
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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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