AMD IOMMU: add a domain flag for default domains

Impact: adds a new protection domain flag

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>

diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h
index 1c769f4e6cdf06a77df8a99ccf9b954f995602e8..6adc7020ef97f0c5c70b653e1385a92b2bd91359 100644 (file)
--- a/arch/x86/include/asm/amd_iommu_types.h
+++ b/arch/x86/include/asm/amd_iommu_types.h
@@ -192,6 +192,8 @@
 
 /* Protection domain flags */
 #define PD_DMA_OPS_MASK                (1UL << 0) /* domain used for dma_ops */
+#define PD_DEFAULT_MASK                (1UL << 1) /* domain is a default dma_ops
+                                             domain for an IOMMU */
 
 /*
  * This structure contains generic data for  IOMMU protection domains

diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index d9b651c0118618bb2f45d1f5ae6e06b5194acfbc..f2956546423b27711b073b89d39713b2b8673d9e 100644 (file)
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1574,6 +1574,7 @@ int __init amd_iommu_init_dma_ops(void)
                iommu->default_dom = dma_ops_domain_alloc(iommu, order);
                if (iommu->default_dom == NULL)
                        return -ENOMEM;
+               iommu->default_dom->domain.flags |= PD_DEFAULT_MASK;
                ret = iommu_init_unity_mappings(iommu);
                if (ret)
                        goto free_domains;