Messages in this thread | | | Subject | Re: [PATCH] swiotlb: fix dma_alloc_coherent allocation failures with swiotlb | From | Andi Kleen <> | Date | Thu, 04 Sep 2008 00:09:51 +0200 |
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Joerg Roedel <joerg.roedel@amd.com> writes:
> The SWIOTLB version of dma_alloc_coherent allocates all memory with > GFP_DMA unconditionally. This leads sometimes unnecessary to allocation > failures. This patch makes the allocation strategy to use the DMA32 zone > first if this is possible. The changes are boot tested on AMD64 and > compile tested for i386 and IA64.
The high level dma_alloc_coherent() does that anyways.
The swiotlb fallback really should only allocate from the swiotlb, nowhere else.
-Andi
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