lkml.org 
[lkml]   [2008]   [May]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: MMIO and gcc re-ordering issue
On Mon, 26 May 2008 21:08:10 -0700
Roland Dreier <rdreier@cisco.com> wrote:

> > either via sparse or some fancy lockdep like "device store" thing?
> > If we can't test for it and it doesn't show up on x86 ... it'll
> > just be an eterrnal chase.
>
> Ben's point is that it will start showing up on x86 because newer
> compilers are reordering things...
>
> - R.


I know a basic reorder will show up there. A simple "barrier()" in
readl/writel solves it for x86. Understandably, Ben doesn't really like
that answer ;-)

--
If you want to reach me at my work email, use arjan@linux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org


\
 
 \ /
  Last update: 2008-05-27 06:31    [W:0.199 / U:1.052 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site