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Message-ID: <1342013952-10174-18-git-send-email-joerg.roedel@amd.com> Date: Wed, 11 Jul 2012 15:39:02 +0200 From: Joerg Roedel <joerg.roedel@....com> To: <iommu@...ts.linux-foundation.org> CC: <linux-kernel@...r.kernel.org>, Joerg Roedel <joerg.roedel@....com> Subject: [PATCH 17/27] 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@....com> --- drivers/iommu/amd_iommu_init.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index 0b4093c..820f688 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1018,6 +1018,13 @@ 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; -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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