Messages in this thread Patch in this message | | | From | Christoph Hellwig <> | Subject | [PATCH 05/14] x86/amd_gart: look at coherent_dma_mask instead of GFP_DMA | Date | Wed, 14 Mar 2018 18:52:04 +0100 |
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We want to phase out looking at the magic GFP_DMA flag in the dma mapping routines, so switch the gart driver to use the coherent_dma_mask instead, which is used to select the GFP_DMA flag in the caller.
Signed-off-by: Christoph Hellwig <hch@lst.de> --- arch/x86/kernel/amd_gart_64.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index 52e3abcf3e70..79ac6caaaabb 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -484,7 +484,7 @@ gart_alloc_coherent(struct device *dev, size_t size, dma_addr_t *dma_addr, unsigned long align_mask; struct page *page; - if (force_iommu && !(flag & GFP_DMA)) { + if (force_iommu && dev->coherent_dma_mask > DMA_BIT_MASK(24)) { flag &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32); page = alloc_pages(flag | __GFP_ZERO, get_order(size)); if (!page) -- 2.14.2
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