Messages in this thread Patch in this message | | | From | Joerg Roedel <> | Subject | [PATCH 09/19] AMD IOMMU: add protection domain flags | Date | Thu, 4 Dec 2008 18:31:46 +0100 |
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Imapct: add a new struct member to 'struct protection_domain'
When using protection domains for dma_ops and KVM its better to know for which subsystem it was allocated. Add a flags member to struct protection domain for that purpose.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> --- arch/x86/include/asm/amd_iommu_types.h | 14 +++++++++----- arch/x86/kernel/amd_iommu.c | 1 + 2 files changed, 10 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/amd_iommu_types.h b/arch/x86/include/asm/amd_iommu_types.h index 1a30c04..b74d35f 100644 --- a/arch/x86/include/asm/amd_iommu_types.h +++ b/arch/x86/include/asm/amd_iommu_types.h @@ -190,16 +190,20 @@ /* FIXME: move this macro to <linux/pci.h> */ #define PCI_BUS(x) (((x) >> 8) & 0xff) +/* Protection domain flags */ +#define PD_DMA_OPS_MASK (1UL << 0) /* domain used for dma_ops */ + /* * This structure contains generic data for IOMMU protection domains * independent of their use. */ struct protection_domain { - spinlock_t lock; /* mostly used to lock the page table*/ - u16 id; /* the domain id written to the device table */ - int mode; /* paging mode (0-6 levels) */ - u64 *pt_root; /* page table root pointer */ - void *priv; /* private data */ + spinlock_t lock; /* mostly used to lock the page table*/ + u16 id; /* the domain id written to the device table */ + int mode; /* paging mode (0-6 levels) */ + u64 *pt_root; /* page table root pointer */ + unsigned long flags; /* flags to find out type of domain */ + void *priv; /* private data */ }; /* diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 3fb5a04..07ef5e9 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -723,6 +723,7 @@ static struct dma_ops_domain *dma_ops_domain_alloc(struct amd_iommu *iommu, goto free_dma_dom; dma_dom->domain.mode = PAGE_MODE_3_LEVEL; dma_dom->domain.pt_root = (void *)get_zeroed_page(GFP_KERNEL); + dma_dom->domain.flags = PD_DMA_OPS_MASK; dma_dom->domain.priv = dma_dom; if (!dma_dom->domain.pt_root) goto free_dma_dom; -- 1.5.6.4
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