[Devel] Re: [PATCH 0/9] powerpc checkpoint/restart kernel support

[Oren Laadan]

Thanks Nathan,

I'll apply the general fixes right away.

I'm about to push ckpt-v18-rc1 today. Would you like that to include
the remaining patches as well ?

Oren.


Nathan Lynch wrote:
> Patches 1-3 fix general issues and can be applied immediately.
> 
> Patches 4-8 implement the checkpoint and restart syscalls and
> architecture callbacks.
> 
> Patch 9 implements the clone_with_pids syscall, but I think the shape
> of that interface is yet to be finalized, so I guess it's FYI for now.
> 
> Simple single task checkpoint and restart work, as does
> clone_with_pids, apparently.  Multiple task restart fails; the
> coordinator task appears to be receiving a signal during
> wait_all_tasks_finish() -> wait_for_completion_interruptible() for
> some reason I am still trying to tracking down.
> 
> Nathan Lynch (9):
>   checkpoint: fix integer-pointer conversion warnings
>   fix trivial build breaks in compat code
>   futex.h: fix compat builds
>   powerpc: reserve checkpoint arch identifiers
>   powerpc: provide APIs for validating and updating DABR
>   powerpc: checkpoint/restart implementation
>   powerpc: wire up checkpoint and restart syscalls
>   powerpc: enable checkpoint support in Kconfig
>   powerpc: clone_with_pids implementation
> 
>  arch/powerpc/Kconfig                      |    3 +
>  arch/powerpc/include/asm/Kbuild           |    1 +
>  arch/powerpc/include/asm/checkpoint_hdr.h |   22 ++
>  arch/powerpc/include/asm/ptrace.h         |    7 +
>  arch/powerpc/include/asm/syscalls.h       |    4 +
>  arch/powerpc/include/asm/systbl.h         |    3 +
>  arch/powerpc/include/asm/unistd.h         |    5 +-
>  arch/powerpc/kernel/entry_32.S            |    8 +
>  arch/powerpc/kernel/entry_64.S            |    5 +
>  arch/powerpc/kernel/process.c             |   18 +
>  arch/powerpc/kernel/ptrace.c              |   88 ++++--
>  arch/powerpc/mm/Makefile                  |    1 +
>  arch/powerpc/mm/checkpoint.c              |  531 +++++++++++++++++++++++++++++
>  checkpoint/process.c                      |   14 +-
>  include/linux/checkpoint_hdr.h            |    2 +
>  include/linux/futex.h                     |    4 +
>  16 files changed, 679 insertions(+), 37 deletions(-)
>  create mode 100644 arch/powerpc/include/asm/checkpoint_hdr.h
>  create mode 100644 arch/powerpc/mm/checkpoint.c
> 
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