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@xxxxxxxxxxxxxxx> know about it.
>From cda7005ba2cbd0744fea343dd5b2aa637eba5b9e Mon Sep 17 00:00:00 2001
From: Joerg Roedel <jroedel@xxxxxxx>
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@xxxxxxx>
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@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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@xxxxxxx 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
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