Messages in this thread | | | Date | Thu, 5 Aug 2010 09:16:26 +0900 | Subject | Re: Using Bootmem for large DMA buffers in the presence of the slab allocator | From | FUJITA Tomonori <> |
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On Wed, 4 Aug 2010 16:07:52 +1000 Peter Crosthwaite <peter.crosthwaite@petalogix.com> wrote:
> I am currently developing Kernel code to allocate and reserve a large > (64MB) contiguous buffer for DMA.
A buffer needs to be physically continuous (your hardware can't do scatter gather)? If so, as already pointed out, there is no pretty solution for it.
There are some drivers that need to do such so the issue has been under discussion:
http://marc.info/?l=linux-mm&m=128015343705933&w=2
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