RE: DMA and Cache coherency on machines without hardware enforced

Ingo Molnar (mingo@chiara.csoma.elte.hu)
Wed, 1 Dec 1999 21:24:46 +0100 (CET)


On Wed, 1 Dec 1999, Bret Indrelee wrote:

> Where did you get this requirement from? That isn't what
> Documentation/IO-mapping.txt appears to indicate.

note that this is a special case, the pointers returned by the ioremap()
variants are not normal kernel virtual memory, so IO-mapping.txt doesnt
apply to them.

-- mingo

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