Lines Matching +full:4 +full:kb +full:- +full:page

1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
84  * Create one free page pool.  Since the i386 kernel virtual address
94  * Create up to three free page lists: VM_FREELIST_DMA32 is for physical pages
95  * that have physical addresses below 4G but are not accessible by ISA DMA,
107  * Always create DMA32 freelist if there is any memory above 4G.
114  * The largest allocation size is 2MB under PAE and 4MB otherwise.
149  * Virtual addresses of things.  Derived from the page directory and
150  * page table indexes from pmap.h for precision.
151  * Because of the page that is both a PD and PT, it looks a little
152  * messy at times, but hey, we'll do anything to save a page :-)
155 #define VM_MAX_KERNEL_ADDRESS	(0xffffffffU - 16 * 1024 * 1024 + 1)
164 #define VM_MAXUSER_ADDRESS	(0xffffffff - 4 * 1024 * 1024 + 1)
166 #define	SHAREDPAGE		(VM_MAXUSER_ADDRESS - PAGE_SIZE)
175 #define	PMAP_MAP_LOW		(4 * 1024 * 1024)
179  * represents NBPDR bytes, aligned to NBPDR.  NBPDR is 4M for non-PAE
180  * page tables, and 2M for PAE, so PAE mode requires twice as many PTDs
181  * to create the same memory map as non-PAE.
183  * 0x00000000 - 0x003fffff	Transient identity map of low memory (0-4M),
185  * 0x00400000 - 0x007fffff	Fixed mapping of the low memory (4-8M).
186  * 0x00800000 - 0xffbfffff	KERNBASE (VA) == KERNLOAD (PA), kernel
189  * 0xffc00000 - 0xffdfffff	Recursive kernel page table mapping, pointed
192  * 0xffe00000 - 0xffffffff	Kernel/User mode shared PDE, contains GDT,
198  * How many physical pages per kmem arena virtual page.
216 #define	VM_KMEM_SIZE_MAX	(((((VM_MAX_KERNEL_ADDRESS - \
217     VM_MIN_KERNEL_ADDRESS) >> (PDRSHIFT - 2)) + 5) / 10) << PDRSHIFT)
225 #define	ZERO_REGION_SIZE	(64 * 1024)	/* 64KB */
241  * No non-transparent large page support in the pmap.
246  * Need a page dump array for minidump.