aboutsummaryrefslogtreecommitdiff
path: root/arch/x86
diff options
context:
space:
mode:
authorJoerg Roedel <joerg.roedel@amd.com>2008-12-10 18:48:59 +0100
committerJoerg Roedel <joerg.roedel@amd.com>2009-01-03 14:11:56 +0100
commite2dc14a2a6c9a83baaafc51f06b7e73cec2167be (patch)
treeba2344f04adac30ab1c4e5cace83b5390f0d7580 /arch/x86
parent26961efe0dab9ca73f8fc3b6137b814252e04972 (diff)
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>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/asm/amd_iommu_types.h2
-rw-r--r--arch/x86/kernel/amd_iommu.c1
2 files changed, 3 insertions, 0 deletions
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;