On Tue, Mar 07, 2006 at 05:36:59PM +0000, David Howells wrote: > David Howells <[EMAIL PROTECTED]> wrote: > > > I suspect, then, that x86_64 should not have an SFENCE for smp_wmb(), and > > that only io_wmb() should have that. > > Hmmm... We don't actually have io_wmb()... Should the following be added to > all archs? > > io_mb() > io_rmb() > io_wmb()
it's spelled mmiowb(), and reads from IO space are synchronous, so don't need barriers. - To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
