diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2012-01-18 14:03:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-02-13 11:17:00 -0800 |
| commit | 61c39c6dcc3c7b3278c611a5bdcc135a1e4d825e (patch) | |
| tree | a7492bdd3a789a7494151e2d4c1b44692a1d3da9 /drivers/iommu | |
| parent | bc7e7c8b2462ed098d18bc54b431341cc69584b2 (diff) | |
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>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | 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 4ee277a8521..e0b3e335fef 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; } |