Subject: Re: inter-cpu coherency and kernel data structures
To: Chris G. Demetriou <>
From: Jason R Thorpe <>
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 <>