Differential D14633 Diff 41168 sys/i386/include/vmparam.h

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sys/i386/include/vmparam.h

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	#define VM_LEVEL_0_ORDER 10			#define VM_LEVEL_0_ORDER 10
	#endif			#endif
	#endif			#endif

	/*			/*
	* Kernel physical load address.			* Kernel physical load address.
	*/			*/
	#ifndef KERNLOAD			#ifndef KERNLOAD
	#define KERNLOAD (1 << PDRSHIFT)			#define KERNLOAD (KERNPTDI << PDRSHIFT)
	#endif /* !defined(KERNLOAD) */			#endif /* !defined(KERNLOAD) */

	/*			/*
	* Virtual addresses of things. Derived from the page directory and			* Virtual addresses of things. Derived from the page directory and
	* page table indexes from pmap.h for precision.			* page table indexes from pmap.h for precision.
	* Because of the page that is both a PD and PT, it looks a little			* Because of the page that is both a PD and PT, it looks a little
	* messy at times, but hey, we'll do anything to save a page :-)			* messy at times, but hey, we'll do anything to save a page :-)
	*/			*/

	#define VM_MAX_KERNEL_ADDRESS VADDR(KPTDI+NKPDE-1, NPTEPG-1)			#define VM_MAX_KERNEL_ADDRESS VADDR(PTDPTDI, 0)

	#define VM_MIN_KERNEL_ADDRESS VADDR(PTDPTDI, PTDPTDI)			#define VM_MIN_KERNEL_ADDRESS 0

	#define KERNBASE VADDR(KPTDI, 0)			#define KERNBASE KERNLOAD

	#define UPT_MAX_ADDRESS VADDR(PTDPTDI, PTDPTDI)			#define UPT_MAX_ADDRESS VADDR(PTDPTDI, PTDPTDI)
	#define UPT_MIN_ADDRESS VADDR(PTDPTDI, 0)			#define UPT_MIN_ADDRESS VADDR(PTDPTDI, 0)

	#define VM_MAXUSER_ADDRESS VADDR(PTDPTDI, 0)			#define VM_MAXUSER_ADDRESS VADDR(TRPTDI, 0)

	#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)			#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
	#define USRSTACK SHAREDPAGE			#define USRSTACK SHAREDPAGE

	#define VM_MAX_ADDRESS VADDR(PTDPTDI, PTDPTDI)			#define VM_MAX_ADDRESS VADDR(PTDPTDI, 0)
	#define VM_MIN_ADDRESS ((vm_offset_t)0)			#define VM_MIN_ADDRESS ((vm_offset_t)0)

				#define PMAP_TRM_MIN_ADDRESS VM_MAXUSER_ADDRESS
				#define PMAP_TRM_MAX_ADDRESS 0xffffffff

				#define PMAP_MAP_LOW VADDR(LOWPTDI, 0)

				/*
				* KVA layout. The unit of the system allocation is single PDE, which
				alcUnsubmitted Not Done Inline Actions What do you mean by "system allocation"? alc: What do you mean by "system allocation"?
				kibAuthorUnsubmitted Not Done Inline Actions Allocation of KVA chunks for the purpose of laying out cpu system structures. It underlies the KVA which is then handed to MI VM. kib: Allocation of KVA chunks for the purpose of laying out cpu system structures. It underlies the…
				* represents NBPDR bytes, aligned to NBPDR. NBPDR is 4M for non-PAE
				alcUnsubmitted Done Inline Actions aligned is misspelled. alc: aligned is misspelled.
				* page tables, and 2M for PAE. Addresses below are shown for non-PAE.
				*
				* 0x00000000 - 0x003fffff Transient identity map of low memory (0-4M),
				* normally disabled to catch NULL derefs.
				* 0x00400000 - 0x007fffff Fixed mapping of the low memory (0-4M).
				* 0x00800000 - 0xffbfffff KERNBASE (VA) == KERNLOAD (PA), kernel
				* text + data and all kernel maps. Managed
				* by MI VM.
				* 0xffc00000 - 0xffdfffff Recursive kernel page table mapping, pointed
				* to by PTmap. PTD[] recusively points
				* into PTmap.
				* 0xffe00000 - 0xffffffff Kernel/User mode shared PDE, contains GDT,
				* IDT, TSS, LDT, trampoline code and stacks.
				* Managed by pmap_trm_alloc().
				*/

	/*			/*
	* How many physical pages per kmem arena virtual page.			* How many physical pages per kmem arena virtual page.
	*/			*/
	#ifndef VM_KMEM_SIZE_SCALE			#ifndef VM_KMEM_SIZE_SCALE
	#define VM_KMEM_SIZE_SCALE (3)			#define VM_KMEM_SIZE_SCALE (3)
	#endif			#endif

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