lkml.org 
[lkml]   [2009]   [May]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic
> > - You got bus master DMA in your test machine?
>
> That's not related to the LOCK_PREFIX concern, which is about the
> processor only, not interaction with other devices.

Actually it's related to other devices; but only very few (most MMIO
doesn't support atomic cycles and is uncached anyways). But there's no driver
for real hardware in Linux that relies on it to my knowledge.

-Andi

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


\
 
 \ /
  Last update: 2009-05-22 23:57    [W:0.305 / U:0.564 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site