Subject: Re: inter-cpu coherency and kernel data structures
To: Chris G. Demetriou <cgd@sibyte.com>
From: Jason R Thorpe <thorpej@zembu.com>
List: tech-smp
Date: 08/14/2000 11:33:31
On Mon, Aug 14, 2000 at 10:17:40AM -0700, Chris G. Demetriou wrote:
> That's a bit overkill, according to the green book at least.
>
> it says:
>
> WMB
> set lock variable to zero
> <nothing>
So, I'm under the impression that the 21064 doens't support WMB -- in
that case, does WMB properly degrade into an MB? Or should I just be
safe and issue MB instead?
--
-- Jason R. Thorpe <thorpej@zembu.com>