lkml.org 
[lkml]   [2014]   [Sep]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v8 07/10] x86, mpx: decode MPX instruction to get bound violation information
On 09/11/2014 03:18 PM, Thomas Gleixner wrote:
> On Thu, 11 Sep 2014, Qiaowei Ren wrote:
>> This patch sets bound violation fields of siginfo struct in #BR
>> exception handler by decoding the user instruction and constructing
>> the faulting pointer.
>>
>> This patch does't use the generic decoder, and implements a limited
>> special-purpose decoder to decode MPX instructions, simply because the
>> generic decoder is very heavyweight not just in terms of performance
>> but in terms of interface -- because it has to.
>
> And why is that an argument to add another special purpose decoder?

Peter asked for it to be done this way specifically:

https://lkml.org/lkml/2014/6/19/411



\
 
 \ /
  Last update: 2014-09-12 01:01    [W:0.613 / U:0.188 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site