lkml.org 
[lkml]   [2010]   [Jul]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [patch 2/2] x86 NMI-safe INT3 and Page Fault
On 07/16/2010 11:15 AM, Avi Kivity wrote:
>
> There aren't that many processes at this time (or there shouldn't be,
> don't know how fork-happy udev is at this stage), so the sync should be
> pretty fast. In any case, we can sync only modules that contain NMI
> handlers.
>
>> I really hope noone ever gets the idea of touching user space from an
>> NMI handler, though, and expecting it to work...
>>
>
> I think the concern here is about an NMI handler's code running in
> vmalloc space, or is it something else?
>

Code or data, yes; including percpu data.

-hpa


\
 
 \ /
  Last update: 2010-07-16 20:21    [W:0.197 / U:7.320 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site