This is a note to let you know that I've just added the patch titled
intel-iommu: Flush unmaps at domain_exit
to the 2.6.39-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:
intel-iommu-flush-unmaps-at-domain_exit.patch
and it can be found in the queue-2.6.39 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 7b668357810ecb5fdda4418689d50f5d95aea6a8 Mon Sep 17 00:00:00 2001
From: Alex Williamson <[email protected]>
Date: Tue, 24 May 2011 12:02:41 +0100
Subject: intel-iommu: Flush unmaps at domain_exit
From: Alex Williamson <[email protected]>
commit 7b668357810ecb5fdda4418689d50f5d95aea6a8 upstream.
We typically batch unmaps to be lazily flushed out at
regular intervals. When we destroy a domain, we need
to force a flush of these lazy unmaps to be sure none
reference the domain we're about to free.
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=35062
Signed-off-by: Alex Williamson <[email protected]>
Signed-off-by: David Woodhouse <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/pci/intel-iommu.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -1416,6 +1416,10 @@ static void domain_exit(struct dmar_doma
if (!domain)
return;
+ /* Flush any lazy unmaps that may reference this domain */
+ if (!intel_iommu_strict)
+ flush_unmaps_timeout(0);
+
domain_remove_dev_info(domain);
/* destroy iovas */
put_iova_domain(&domain->iovad);
Patches currently in stable-queue which might be from
[email protected] are
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