Re: DMA cache consistency bug introduced in 2.6.28

From: Krzysztof Halasa
Date: Thu Dec 17 2009 - 13:21:51 EST

Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> writes:

> On x86, where all caches are supposed to be totally coherent (except for
> I$ under very special circumstances),

BTW SWIOTLB is a non-coherent "cache" in some sense, though I'd be
surprised if it's related. Anyway mentioning $CPU and $RAM at the very
least would be a good idea in such cases.
Krzysztof Halasa
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