lkml.org 
[lkml]   [2006]   [Feb]   [28]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
DateTue, 28 Feb 2006 12:24:25 -0600
From"Christopher Friesen" <>
SubjectRe: [PATCH] Define wc_wmb, a write barrier for PCI write combining
linux-os (Dick Johnson) wrote:

> Also, the
> PCI bus is a FIFO. Nothing gets reordered.

The CPU itself can reorder the write before it hits the PCI bus.  I 
don't think x86 will do this, but others will.

Chris
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-02-28 19:27    [from the cache]
©2003-2008