On Fri, 22 Sep 2006 16:30:20 -0700 (PDT) Christoph Lameter <clameter@xxxxxxx> wrote: > There is code in Andrews tree that allows getting rid of ZONE_DMA. I know > that SGI machines do not use ZONE_DMA. I looked through the arch code and > I do not see ZONE_DMA or GFP_DMA uses that I cannot account for. However, > I am not familiar with the code for other IA64 platforms. > > This patch will make IA64 have a single zone in each node. As a result > loops are unrolled, various VM macros can be optimized further and the > memory load balancing code between different zones in one node is no > longer necessary. Note that having no ZONE_DMA means that GFP_DMA will be > ignored. If you know of any devices depending on ZONE_DMA (memory returned > must be below 4GB) then we first need to deal with those possibly by > modifying dma_alloc_coherent functions to obtain memory in a different > way than via GFP_DMA. > > We are currently working on a new page allocator function > > alloc_pages_range() > looks atractive :) But how to use it ? the devices(codes) can know their necessary and available address range on any platform ? -Kame - To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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