This is a note to let you know that I've just added the patch titled
iommu/amd: Work around broken IVRS tables
to the 3.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
iommu-amd-work-around-broken-ivrs-tables.patch
and it can be found in the queue-3.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From af1be04901e27ce669b4ecde1c953d5c939498f5 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <[email protected]>
Date: Wed, 18 Jan 2012 14:03:11 +0100
Subject: iommu/amd: Work around broken IVRS tables
From: Joerg Roedel <[email protected]>
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 <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/iommu/amd_iommu.c | 3 +++
1 file changed, 3 insertions(+)
--- 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;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.2/iommu-msm-fix-error-handling-in-msm_iommu_unmap.patch
queue-3.2/iommu-amd-work-around-broken-ivrs-tables.patch
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