Messages in this thread | | | Date | Thu, 9 Mar 2006 12:36:07 +1100 | From | Paul Mackerras <> | Subject | Re: [PATCH] Document Linux's memory barriers [try #2] |
| |
Jesse Barnes writes:
> It uses a per-node address space to reference the local bridge. The > local bridge then waits until the remote bridge has acked the write > before, then sets the outstanding write register to the appropriate > value.
That sounds like mmiowb can only be used when preemption is disabled, such as inside a spin-locked region - is that right?
Paul. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |