This is a note to let you know that I've just added the patch titled
iommu/amd: Fix interrupt remapping for aliased devices
to the 3.14-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-fix-interrupt-remapping-for-aliased-devices.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From e028a9e6b8a637af09ac4114083280df4a7045f1 Mon Sep 17 00:00:00 2001
From: Alex Williamson <alex.william...@redhat.com>
Date: Tue, 22 Apr 2014 10:08:40 -0600
Subject: iommu/amd: Fix interrupt remapping for aliased devices
From: Alex Williamson <alex.william...@redhat.com>
commit e028a9e6b8a637af09ac4114083280df4a7045f1 upstream.
An apparent cut and paste error prevents the correct flags from being
set on the alias device resulting in MSI on conventional PCI devices
failing to work. This also produces error events from the IOMMU like:
AMD-Vi: Event logged [INVALID_DEVICE_REQUEST device=00:14.4
address=0x000000fdf8000000 flags=0x0a00]
Where 14.4 is a PCIe-to-PCI bridge with a device behind it trying to
use MSI interrupts.
Signed-off-by: Alex Williamson <alex.william...@redhat.com>
Signed-off-by: Joerg Roedel <j...@8bytes.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/iommu/amd_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -3999,7 +3999,7 @@ static struct irq_remap_table *get_irq_t
iommu_flush_dte(iommu, devid);
if (devid != alias) {
irq_lookup_table[alias] = table;
- set_dte_irq_entry(devid, table);
+ set_dte_irq_entry(alias, table);
iommu_flush_dte(iommu, alias);
}
Patches currently in stable-queue which might be from
alex.william...@redhat.com are
queue-3.14/iommu-amd-fix-interrupt-remapping-for-aliased-devices.patch
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