From: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed, 10 Dec 2008 17:48:59 +0000 (+0100)
Subject: AMD IOMMU: add a domain flag for default domains
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=e2dc14a2a6c9a83baaafc51f06b7e73cec2167be;p=deliverable%2Flinux.git

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 1c769f4e6cdf..6adc7020ef97 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 d9b651c01186..f2956546423b 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;