[PATCH 04/23] iommu/amd: Flush IOMMU TLB on __map_single error path

[Joerg Roedel]

From: Joerg Roedel <jroedel@xxxxxxx>

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@xxxxxxx>
---
 drivers/iommu/amd_iommu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 8ff3331..42c0a81 100644
--- 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;
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/