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intel-iommu: Flush unmaps at domain_exit

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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 <alex.williamson@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
This commit is contained in:
Alex Williamson 2011-05-24 12:02:41 +01:00 committed by David Woodhouse
parent b3a530e4e7
commit 7b66835781
1 changed files with 4 additions and 0 deletions
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4
drivers/pci/intel-iommu.c
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@ -1422,6 +1422,10 @@ static void domain_exit(struct dmar_domain *domain)
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);