Patch "iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back" has been added to the 4.4-stable tree

Patch "iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back

to the 4.4-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-handle-iommu_domain_dma-in-ops-domain_free-call-back.patch
and it can be found in the queue-4.4 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 cda7005ba2cbd0744fea343dd5b2aa637eba5b9e Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@suse.de>
Date: Thu, 7 Jul 2016 15:57:04 +0200
Subject: iommu/amd: Handle IOMMU_DOMAIN_DMA in ops->domain_free call-back

From: Joerg Roedel <jroedel@suse.de>

commit cda7005ba2cbd0744fea343dd5b2aa637eba5b9e upstream.

This domain type is not yet handled in the
iommu_ops->domain_free() call-back. Fix that.

Fixes: 0bb6e243d7fb ('iommu/amd: Support IOMMU_DOMAIN_DMA type allocation')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/iommu/amd_iommu.c |   27 ++++++++++++++++++---------
 1 file changed, 18 insertions(+), 9 deletions(-)

--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2970,9 +2970,7 @@ static struct iommu_domain *amd_iommu_do
 static void amd_iommu_domain_free(struct iommu_domain *dom)
 {
 	struct protection_domain *domain;
-
-	if (!dom)
-		return;
+	struct dma_ops_domain *dma_dom;
 
 	domain = to_pdomain(dom);
 
@@ -2981,13 +2979,24 @@ static void amd_iommu_domain_free(struct
 
 	BUG_ON(domain->dev_cnt != 0);
 
-	if (domain->mode != PAGE_MODE_NONE)
-		free_pagetable(domain);
-
-	if (domain->flags & PD_IOMMUV2_MASK)
-		free_gcr3_table(domain);
+	if (!dom)
+		return;
 
-	protection_domain_free(domain);
+	switch (dom->type) {
+	case IOMMU_DOMAIN_DMA:
+		dma_dom = domain->priv;
+		dma_ops_domain_free(dma_dom);
+		break;
+	default:
+		if (domain->mode != PAGE_MODE_NONE)
+			free_pagetable(domain);
+
+		if (domain->flags & PD_IOMMUV2_MASK)
+			free_gcr3_table(domain);
+
+		protection_domain_free(domain);
+		break;
+	}
 }
 
 static void amd_iommu_detach_device(struct iommu_domain *dom,


Patches currently in stable-queue which might be from jroedel@suse.de are

queue-4.4/iommu-amd-handle-iommu_domain_dma-in-ops-domain_free-call-back.patch
queue-4.4/iommu-amd-update-alias-dte-in-update_device_table.patch
queue-4.4/iommu-amd-init-unity-mappings-only-for-dma_ops-domains.patch
queue-4.4/iommu-vt-d-return-error-code-in-domain_context_mapping_one.patch
queue-4.4/iommu-exynos-suppress-unbinding-to-prevent-system-failure.patch