lkml.org 
[lkml]   [2016]   [Jan]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH] x86: Add an explicit barrier() to clflushopt()
From
Date
On 01/07/16 11:44, Chris Wilson wrote:
>
> Now I feel silly. Looking at the .s, there is no difference with the
> addition of the barrier to clflush_cache_range(). And sure enough
> letting the test run for longer, we see a failure. I fell for a placebo.
>
> The failing assertion is always on the last cacheline and is always one
> value behind. Oh well, back to wondering where we miss the flush.
> -Chris
>

Could you include the assembly here?

-hpa

\
 
 \ /
  Last update: 2016-01-07 22:41    [W:0.051 / U:0.176 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site