Messages in this thread | | | Subject | Re: Opinion on ordering of writel vs. stores to RAM | From | Alan Cox <> | Date | Sat, 09 Sep 2006 16:09:51 +0100 |
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Ar Sad, 2006-09-09 am 17:23 +1000, ysgrifennodd Benjamin Herrenschmidt: > The problem is that very few people have any clear idea of what mmiowb > is :) In fact, what you described is not the definition of mmiowb > according to Jesse
Some of us talked a little about this at Linux Kongress and one suggestion so people did understand it was
spin_lock_io(); spin_unlock_io();
so that it can be expressed not as a weird barrier op but as part of the locking.
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