diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:56:02 -0800 |
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committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-14 19:56:02 -0800 |
commit | 4060994c3e337b40e0f6fa8ce2cc178e021baf3d (patch) | |
tree | 980297c1747ca89354bc879cc5d17903eacb19e2 /arch/x86_64/kernel/pci-gart.c | |
parent | 0174f72f848dfe7dc7488799776303c81b181b16 (diff) | |
parent | d3ee871e63d0a0c70413dc0aa5534b8d6cd6ec37 (diff) |
Merge x86-64 update from Andi
Diffstat (limited to 'arch/x86_64/kernel/pci-gart.c')
-rw-r--r-- | arch/x86_64/kernel/pci-gart.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86_64/kernel/pci-gart.c b/arch/x86_64/kernel/pci-gart.c index 88be97c9698..2e28e855ec3 100644 --- a/arch/x86_64/kernel/pci-gart.c +++ b/arch/x86_64/kernel/pci-gart.c @@ -220,6 +220,12 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, uses the normal dma_mask for alloc_coherent. */ dma_mask &= *dev->dma_mask; + /* Why <=? Even when the mask is smaller than 4GB it is often larger + than 16MB and in this case we have a chance of finding fitting memory + in the next higher zone first. If not retry with true GFP_DMA. -AK */ + if (dma_mask <= 0xffffffff) + gfp |= GFP_DMA32; + again: memory = dma_alloc_pages(dev, gfp, get_order(size)); if (memory == NULL) @@ -245,7 +251,7 @@ dma_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_handle, } if (!(gfp & GFP_DMA)) { - gfp |= GFP_DMA; + gfp = (gfp & ~GFP_DMA32) | GFP_DMA; goto again; } return NULL; |