lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

AMD IOMMU: add a domain flag for default domains

Browse Source 
Impact: adds a new protection domain flag

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Joerg Roedel
2008-12-10 18:48:59 +01:00
parent 26961efe0d
commit e2dc14a2a6
2 changed files with 3 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/amd_iommu_types.h
View File

@@ -192,6 +192,8 @@
/* Protection domain flags */ /* Protection domain flags */
#define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ #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 * This structure contains generic data for IOMMU protection domains

1
arch/x86/kernel/amd_iommu.c
View File

@@ -1574,6 +1574,7 @@ int __init amd_iommu_init_dma_ops(void)
iommu->default_dom = dma_ops_domain_alloc(iommu, order); iommu->default_dom = dma_ops_domain_alloc(iommu, order);
if (iommu->default_dom == NULL) if (iommu->default_dom == NULL)
return -ENOMEM; return -ENOMEM;
iommu->default_dom->domain.flags |= PD_DEFAULT_MASK;
ret = iommu_init_unity_mappings(iommu); ret = iommu_init_unity_mappings(iommu);
if (ret) if (ret)
goto free_domains; goto free_domains;