Re: [PATCH v3 1/4] x86, mpx: add documentation on Intel MPX

[Ren Qiaowei]

On 01/28/2014 04:27 AM, Andy Lutomirski wrote:
> On 01/26/2014 01:08 AM, Qiaowei Ren wrote:
> > +1) Providing handlers for bounds faults (#BR).
> > +
> > +When MPX is enabled, there are 2 new situations that can generate
> > +#BR faults. If a bounds overflow occurs then a #BR is generated.
> > +The fault handler will decode MPX instructions to get violation
> > +address and set this address into extended struct siginfo.
>
> Can you document exactly where the insn address and pointer value end
> up?  (If it's in the (IMO hideous) cr2 field in ucontext, this needs to
> be documented.  If it's somewhere useful in siginfo, that should also be
> documented to save people the time it takes to figure it out.)
Ok. I will describe extended siginfo at this documentation.

Thanks,
Qiaowei
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