Re: [PATCH v2 0/4] Intel MPX support

[Ren Qiaowei]

On 01/22/2014 08:30 PM, Ingo Molnar wrote:
> * Ren, Qiaowei <qiaowei.ren@xxxxxxxxx> wrote:
>
> > > -----Original Message-----
> > > From: Ingo Molnar [mailto:mingo.kernel.org@xxxxxxxxx] On Behalf Of Ingo
> > > Molnar
> > > Sent: Wednesday, January 22, 2014 7:53 PM
> > > To: Ren, Qiaowei
> > > Cc: H. Peter Anvin; Thomas Gleixner; Ingo Molnar; x86@xxxxxxxxxx;
> > > linux-kernel@xxxxxxxxxxxxxxx; Peter Zijlstra
> > > Subject: Re: [PATCH v2 0/4] Intel MPX support
> > >
> > >
> > > * Qiaowei Ren <qiaowei.ren@xxxxxxxxx> wrote:
> > >
> > > > Changes since v1:
> > > >    * check to see if #BR occurred in userspace or kernel space.
> > > >    * use generic structure and macro as much as possible when
> > > >      decode mpx instructions.
> > > >
> > > > Qiaowei Ren (4):
> > > >    x86, mpx: add documentation on Intel MPX
> > > >    x86, mpx: hook #BR exception handler to allocate bound tables
> > > >    x86, mpx: add prctl commands PR_MPX_INIT, PR_MPX_RELEASE
> > > >    x86, mpx: extend siginfo structure to include bound violation
> > > >      information
> > > >
> > > >   Documentation/x86/intel_mpx.txt    |   76 +++++++
> > > >   arch/x86/Kconfig                   |    4 +
> > > >   arch/x86/include/asm/mpx.h         |   63 ++++++
> > > >   arch/x86/include/asm/processor.h   |   16 ++
> > > >   arch/x86/kernel/Makefile           |    1 +
> > > >   arch/x86/kernel/mpx.c              |  417
> > > ++++++++++++++++++++++++++++++++++++
> > > >   arch/x86/kernel/traps.c            |   61 +++++-
> > > >   include/uapi/asm-generic/siginfo.h |    9 +-
> > > >   include/uapi/linux/prctl.h         |    6 +
> > > >   kernel/signal.c                    |    4 +
> > > >   kernel/sys.c                       |   12 +
> > > >   11 files changed, 667 insertions(+), 2 deletions(-)  create mode
> > > > 100644 Documentation/x86/intel_mpx.txt  create mode 100644
> > > > arch/x86/include/asm/mpx.h  create mode 100644 arch/x86/kernel/mpx.c
> > >
> > > Such a patch submission is absolutely inadequate!
> > >
> > > Please outline:
> > >
> > >    - a short summary of what the feature does
> > >
> > >    - a short description of what hardware supports it today or will
> > >      support it in the future
> > >
> > >    - a short description of whether the feature needs any
> > >      configuration from the user or it's entirely auto-enabled on
> > >      hardware that supports it.
> > >
> > >    - a cost/benefit description to unrelated code: is this slowing down
> > >      anything else?
> > >
> > >    - how does user-space compiler support stand, what's the expected
> > >      status there, etc.
> > >
> > > Only a small fraction of that information can be found in
> > > Documentation/x86/intel_mpx.txt. in
> > >
> > > I'm absolutely sick of these semi-anonymous patch submissions from Intel, so
> > > I'm NAK-ing it until it's communicated properly.
> > Ok. I will add related content into this documentation.
>
> More importantly, put it into the 0/X mail! That's how people can
> review such a patch set effectively.
Ok. Thanks for your feedback. I will do it.

Thanks,
Qiaowei
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