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authorJoerg Roedel <joerg.roedel@amd.com>2012-06-21 16:51:25 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2012-09-28 17:33:28 +0200
commitf6fec00a9202987f1be2ae0a722518b742a9a799 (patch)
tree53f05eb432b897f4cd189731749b97ff3a67108b /drivers/iommu
parent33f28c59e18d83fd2aeef258d211be66b9b80eb3 (diff)
downloadop-kernel-dev-f6fec00a9202987f1be2ae0a722518b742a9a799.zip
op-kernel-dev-f6fec00a9202987f1be2ae0a722518b742a9a799.tar.gz
iommu/amd: Make sure IOMMU is not considered to translate itself
The IVRS table usually includes the IOMMU device. But the IOMMU does never translate itself, so make sure the IOMMU driver knows this. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/amd_iommu_init.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c
index 8a7f197..68b3305 100644
--- a/drivers/iommu/amd_iommu_init.c
+++ b/drivers/iommu/amd_iommu_init.c
@@ -1021,6 +1021,13 @@ static int __init init_iommu_one(struct amd_iommu *iommu, struct ivhd_header *h)
ret = init_iommu_from_acpi(iommu, h);
if (ret)
return ret;
+
+ /*
+ * Make sure IOMMU is not considered to translate itself. The IVRS
+ * table tells us so, but this is a lie!
+ */
+ amd_iommu_rlookup_table[iommu->devid] = NULL;
+
init_iommu_devices(iommu);
return 0;
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