From e2dc14a2a6c9a83baaafc51f06b7e73cec2167be Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Wed, 10 Dec 2008 18:48:59 +0100 Subject: [PATCH] AMD IOMMU: add a domain flag for default domains Impact: adds a new protection domain flag Signed-off-by: Joerg Roedel --- arch/x86/include/asm/amd_iommu_types.h | 2 ++ arch/x86/kernel/amd_iommu.c | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 1c769f4e6cd..6adc7020ef9 100644 --- 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 d9b651c0118..f2956546423 100644 --- 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; -- 2.41.1