[ofa-general] synchronize commands issued to MTHCA

[akepner at sgi.com]

On Fri, Jan 04, 2008 at 02:43:57PM -0600, Yicheng Jia wrote:
> > The mmiowb() is definitely necessary, because without it then commands
> > were getting messed up on large Altix systems.
> 
> I'm using Duo-core Xeon and I just grep the source of "mmiowb()" in kernel 
> 2.6.23 include/asm-x86_64 /io.h and found that this function does nothing 
> on x86_64 platform, is it true?
> 

Yes. It's a no-op for most architectures.

-- 
Arthur