Re: Opinion on ordering of writel vs. stores to RAM

[Alan Cox]

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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