lkml.org 
[lkml]   [2001]   [Jun]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: Missing cache flush.

Chris Wedgwood writes:
> On Mon, Jun 04, 2001 at 07:03:01PM -0700, David S. Miller wrote:
>
> The x86 doesn't have dumb caches, therefore it really doesn't
> need to flush anything. Maybe a mb(), but that is it.
>
> What if the memory is erased underneath the CPU being aware of this?
> In such a way ig generates to bus traffic...

This doesn't happen on x86. The processor snoops all transactions
done by other agents to/from main memory. The processor caches are
always up to date.

Later,
David S. Miller
davem@redhat.com
-
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: 2005-03-22 12:54    [W:0.130 / U:0.136 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site