Subject: Re: pmap stability patch
To: Chuck Silvers <chuq@chuq.com>
From: Jason R Thorpe <thorpej@wasabisystems.com>
List: port-sparc64
Date: 11/23/2002 16:05:58
On Sat, Nov 23, 2002 at 03:56:49PM -0800, Chuck Silvers wrote:
> are we sure it isn't the icache that's the problem?
> the icache isn't coherent with stores from the CPU, and I can't think of
> anything in the NFS i/o path that would do any icache flushing.
> is there some mechanism for handling this, or is it just missing?
Well, pmap_enter()/pmap_remove() should be flushing the I$ for a page
when a mapping is entered/changed/removed.
--
-- Jason R. Thorpe <thorpej@wasabisystems.com>