From 61c39c6dcc3c7b3278c611a5bdcc135a1e4d825e Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed, 18 Jan 2012 14:03:11 +0100
Subject: [PATCH 63/87] iommu/amd: Work around broken IVRS tables

commit af1be04901e27ce669b4ecde1c953d5c939498f5 upstream.

On some systems the IVRS table does not contain all PCI
devices present in the system. In case a device not present
in the IVRS table is translated by the IOMMU no DMA is
possible from that device by default.
This patch fixes this by removing the DTE entry for every
PCI device present in the system and not covered by IVRS.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/iommu/amd_iommu.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 4ee277a..e0b3e33 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2479,6 +2479,9 @@ static unsigned device_dma_ops_init(void)
 
 	for_each_pci_dev(pdev) {
 		if (!check_device(&pdev->dev)) {
+
+			iommu_ignore_device(&pdev->dev);
+
 			unhandled += 1;
 			continue;
 		}
-- 
1.7.7.4

