On Tue, 17 Oct 2006, Michael S. Tsirkin wrote: > Quoting r. Roland Dreier <[EMAIL PROTECTED]>: >> Subject: Re: [PATCH] use mmiowb after doorbell ring >> >> Michael> BTW, something like this will be needed for userspace too? >> >> Ugh, I forgot about that. >> >> I don't think an mmiowb() equivalent is available from userspace. > > Isn't this just an asm() command? >
Depends on the architecture, but on sn2, it's not. (Actually, on most architectures, it's a no-op. See arch/ia64/sn/kernel/iomv.c:__sn_mmiowb() for the sn2 version.) -- Arthur _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
