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	#define DMAR_PAGE_SIZE PAGE_SIZE			#define DMAR_PAGE_SIZE PAGE_SIZE
	#define DMAR_PAGE_MASK (DMAR_PAGE_SIZE - 1)			#define DMAR_PAGE_MASK (DMAR_PAGE_SIZE - 1)
	#define DMAR_PAGE_SHIFT PAGE_SHIFT			#define DMAR_PAGE_SHIFT PAGE_SHIFT
	#define DMAR_NPTEPG (DMAR_PAGE_SIZE / sizeof(dmar_pte_t))			#define DMAR_NPTEPG (DMAR_PAGE_SIZE / sizeof(dmar_pte_t))
	#define DMAR_NPTEPGSHIFT 9			#define DMAR_NPTEPGSHIFT 9
	#define DMAR_PTEMASK (DMAR_NPTEPG - 1)			#define DMAR_PTEMASK (DMAR_NPTEPG - 1)

				#define IOMMU_PAGE_SIZE DMAR_PAGE_SIZE
				#define IOMMU_PAGE_MASK DMAR_PAGE_MASK

	typedef struct dmar_root_entry {			typedef struct dmar_root_entry {
	uint64_t r1;			uint64_t r1;
	uint64_t r2;			uint64_t r2;
	} dmar_root_entry_t;			} dmar_root_entry_t;
	#define DMAR_ROOT_R1_P 1 /* Present */			#define DMAR_ROOT_R1_P 1 /* Present */
	#define DMAR_ROOT_R1_CTP_MASK 0xfffffffffffff000 /* Mask for Context-Entry			#define DMAR_ROOT_R1_CTP_MASK 0xfffffffffffff000 /* Mask for Context-Entry
	Table Pointer */			Table Pointer */

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