Commit 53b3b65a authored Dec 21, 2015 by Joerg Roedel

iommu/amd: Flush IOMMU TLB on __map_single error path



There have been present PTEs which in theory could have made
it to the IOMMU TLB. Flush the addresses out on the error
path to make sure no stale entries remain.

Signed-off-by: Joerg Roedel <jroedel@suse.de>

parent 08c5fb93

drivers/iommu/amd_iommu.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2493,6 +2493,8 @@ static dma_addr_t __map_single(struct device *dev,
		dma_ops_domain_unmap(dma_dom, start);
		}

		domain_flush_pages(&dma_dom->domain, address, size);

		dma_ops_free_addresses(dma_dom, address, pages);

		return DMA_ERROR_CODE;