Messages in this thread | | | Subject | Re: Opinion on ordering of writel vs. stores to RAM | From | Alan Cox <> | Date | Sun, 10 Sep 2006 23:23:13 +0100 |
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Ar Llu, 2006-09-11 am 07:25 +1000, ysgrifennodd Benjamin Herrenschmidt: > I'm copying that from a private discussion I had. Please let me know if > you have comments. This proposal includes some questions too so please > answer :)
Looks sane and Linus seems to like mmiowb. Only other question: what are the guarantees of memcpy_to/fromio. Does it access the memory in ordered fashion or not, does it guarantee only ordering at the end of the copy or during it ?
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