diff options
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 29 |
1 files changed, 10 insertions, 19 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index c657e48..4c926da 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -1597,13 +1597,19 @@ static unsigned long dma_ops_alloc_addresses(struct device *dev, unsigned long align_mask, u64 dma_mask) { - unsigned long address; + unsigned long address = -1; #ifdef CONFIG_IOMMU_STRESS dom->next_index = 0; #endif - address = dma_ops_area_alloc(dev, dom, pages, align_mask, dma_mask); + while (address == -1) { + address = dma_ops_area_alloc(dev, dom, pages, + align_mask, dma_mask); + + if (address == -1 && alloc_new_range(dom, true, GFP_ATOMIC)) + break; + } if (unlikely(address == -1)) address = DMA_ERROR_CODE; @@ -2460,26 +2466,11 @@ static dma_addr_t __map_single(struct device *dev, if (align) align_mask = (1UL << get_order(size)) - 1; -retry: address = dma_ops_alloc_addresses(dev, dma_dom, pages, align_mask, dma_mask); - if (unlikely(address == DMA_ERROR_CODE)) { - if (alloc_new_range(dma_dom, false, GFP_ATOMIC)) - goto out; - - /* - * setting next_index here will let the address - * allocator only scan the new allocated range in the - * first run. This is a small optimization. - */ - dma_dom->next_index = dma_dom->aperture_size >> APERTURE_RANGE_SHIFT; - /* - * aperture was successfully enlarged by 128 MB, try - * allocation again - */ - goto retry; - } + if (address == DMA_ERROR_CODE) + goto out; start = address; for (i = 0; i < pages; ++i) { |