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iommu/amd: Flush IOMMU TLB on __map_single error path
author
Joerg Roedel
<jroedel@suse.de>
Mon, 21 Dec 2015 12:14:52 +0000
(13:14 +0100)
committer
Joerg Roedel
<jroedel@suse.de>
Mon, 28 Dec 2015 16:18:50 +0000
(17:18 +0100)
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>
drivers/iommu/amd_iommu.c
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diff --git
a/drivers/iommu/amd_iommu.c
b/drivers/iommu/amd_iommu.c
index
8ff3331
..
42c0a81
100644
(file)
--- a/
drivers/iommu/amd_iommu.c
+++ b/
drivers/iommu/amd_iommu.c
@@
-2493,6
+2493,8
@@
out_unmap:
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;