Differential D2712 Diff 6029 head/sys/amd64/include/vmparam.h

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head/sys/amd64/include/vmparam.h

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	* The number of PHYSSEG entries must be one greater than the number			* The number of PHYSSEG entries must be one greater than the number
	* of phys_avail entries because the phys_avail entry that spans the			* of phys_avail entries because the phys_avail entry that spans the
	* largest physical address that is accessible by ISA DMA is split			* largest physical address that is accessible by ISA DMA is split
	* into two PHYSSEG entries.			* into two PHYSSEG entries.
	*/			*/
	#define VM_PHYSSEG_MAX 63			#define VM_PHYSSEG_MAX 63

	/*			/*
	* Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool			* Create two free page pools: VM_FREEPOOL_DEFAULT is the default pool
	* from which physical pages are allocated and VM_FREEPOOL_DIRECT is			* from which physical pages are allocated and VM_FREEPOOL_DIRECT is
	* the pool from which physical pages for page tables and small UMA			* the pool from which physical pages for page tables and small UMA
	* objects are allocated.			* objects are allocated.
	*/			*/
	#define VM_NFREEPOOL 3			#define VM_NFREEPOOL 2
	#define VM_FREEPOOL_CACHE 2
	#define VM_FREEPOOL_DEFAULT 0			#define VM_FREEPOOL_DEFAULT 0
	#define VM_FREEPOOL_DIRECT 1			#define VM_FREEPOOL_DIRECT 1

	/*			/*
	* Create up to three free page lists: VM_FREELIST_DMA32 is for physical pages			* Create up to three free page lists: VM_FREELIST_DMA32 is for physical pages
	* that have physical addresses below 4G but are not accessible by ISA DMA,			* that have physical addresses below 4G but are not accessible by ISA DMA,
	* and VM_FREELIST_ISADMA is for physical pages that are accessible by ISA			* and VM_FREELIST_ISADMA is for physical pages that are accessible by ISA
	* DMA.			* DMA.
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