From: Alex Williamson Date: Tue, 24 May 2011 11:02:41 +0000 (+0100) Subject: intel-iommu: Flush unmaps at domain_exit X-Git-Tag: upstream/snapshot3+hdmi~9997^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=7b668357810ecb5fdda4418689d50f5d95aea6a8;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git intel-iommu: Flush unmaps at domain_exit 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 Signed-off-by: David Woodhouse Cc: stable@kernel.org --- diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 4e4e020..395f253 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -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);