lkml.org 
[lkml]   [2011]   [Nov]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: Perhaps a side effect regarding NMI returns
Date
Linus Torvalds <torvalds@linux-foundation.org> writes:

Not sure what problem Steven thinks is there. Once you
switched the stack any nesting is fine.

> I would suggest that the actual NMI handler itself should probably
> never use that paranoid exit at all, and just always use a regular
> iret. Screw scheduling and TIF checks.

The reason I added them originally is to prevent the race of remote
kernel events being delayed for a long time. With Frederic's nohz work
this will be more important in the future. Today it would be eventually
picked up by the regular timer interrupts.

-Andi

--
ak@linux.intel.com -- Speaking for myself only


\
 
 \ /
  Last update: 2011-11-29 21:13    [W:0.075 / U:0.192 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site