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Commit e2dc14a2 authored by Joerg Roedel's avatar Joerg Roedel
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AMD IOMMU: add a domain flag for default domains 



Impact: adds a new protection domain flag

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 26961efe

arch/x86/include/asm/amd_iommu_types.h

+2 −0
Original line number Diff line number Diff line
@@ -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

arch/x86/kernel/amd_iommu.c

+1 −0
Original line number Diff line number Diff line
@@ -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;