Thread (19 messages) flat view 19 messages, 4 authors, 2005-05-09

Re: [PATCH] 8xx: fix usage of pinned 8Mbyte TLB entries

From: Dan Malek <hidden>
Date: 2005-05-06 23:11:08

On May 6, 2005, at 6:49 PM, Dan Malek wrote:
quoted
3) Memory for DMA pages must not be in the pinned region. ie. drivers
should not allocate memory directly for DMA purposes.
Why not?
Having now read this again, the "Why not?" was for the first
sentence :-)

Drivers should always use the proper dma allocation functions.
Unpredictable and sometimes exciting results can happen if
they don't.

Thanks.


	-- Dan
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