From: Joerg Roedel <[email protected]>

Add support to allocate direct mapped domains through the
IOMMU-API.

Signed-off-by: Joerg Roedel <[email protected]>
---
 drivers/iommu/amd_iommu.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c
index 06d19e8..33bbb4d 100644
--- a/drivers/iommu/amd_iommu.c
+++ b/drivers/iommu/amd_iommu.c
@@ -2996,6 +2996,13 @@ static struct iommu_domain 
*amd_iommu_domain_alloc(unsigned type)
                }
                pdomain = &dma_domain->domain;
                break;
+       case IOMMU_DOMAIN_IDENTITY:
+               pdomain = protection_domain_alloc();
+               if (!pdomain)
+                       return NULL;
+
+               pdomain->mode = PAGE_MODE_NONE;
+               break;
        default:
                return NULL;
        }
-- 
1.9.1

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