[apple/xnu.git] / osfmk / mach / i386 / vm_param.h

/*
 * Copyright (c) 2000-2012 Apple Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 *
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 *
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 *
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */
/*
 * @OSF_COPYRIGHT@
 */
/*
 * Mach Operating System
 * Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 */

/*
 * Copyright (c) 1994 The University of Utah and
 * the Computer Systems Laboratory at the University of Utah (CSL).
 * All rights reserved.
 *
 * Permission to use, copy, modify and distribute this software is hereby
 * granted provided that (1) source code retains these copyright, permission,
 * and disclaimer notices, and (2) redistributions including binaries
 * reproduce the notices in supporting documentation, and (3) all advertising
 * materials mentioning features or use of this software display the following
 * acknowledgement: ``This product includes software developed by the
 * Computer Systems Laboratory at the University of Utah.''
 *
 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
 * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * CSL requests users of this software to return to csl-dist@cs.utah.edu any
 * improvements that they make and grant CSL redistribution rights.
 *
 */

/*
 *	File:	vm_param.h
 *	Author:	Avadis Tevanian, Jr.
 *	Date:	1985
 *
 *	I386 machine dependent virtual memory parameters.
 *	Most of the declarations are preceeded by I386_ (or i386_)
 *	which is OK because only I386 specific code will be using
 *	them.
 */

#ifndef _MACH_I386_VM_PARAM_H_
#define _MACH_I386_VM_PARAM_H_

#define BYTE_SIZE               8               /* byte size in bits */

#define I386_PGBYTES            4096            /* bytes per 80386 page */
#define I386_PGSHIFT            12              /* bitshift for pages */

#define PAGE_SIZE               I386_PGBYTES
#define PAGE_SHIFT              I386_PGSHIFT
#define PAGE_MASK               (PAGE_SIZE - 1)

#define PAGE_MAX_SHIFT          PAGE_SHIFT
#define PAGE_MAX_SIZE           PAGE_SIZE
#define PAGE_MAX_MASK           PAGE_MASK

#define PAGE_MIN_SHIFT          PAGE_SHIFT
#define PAGE_MIN_SIZE           PAGE_SIZE
#define PAGE_MIN_MASK           PAGE_MASK

#define I386_LPGBYTES           2*1024*1024     /* bytes per large page */
#define I386_LPGSHIFT           21              /* bitshift for large pages */
#define I386_LPGMASK            (I386_LPGBYTES-1)

/*
 *	Convert bytes to pages and convert pages to bytes.
 *	No rounding is used.
 */

#define i386_btop(x)            ((ppnum_t)((x) >> I386_PGSHIFT))
#define machine_btop(x)         i386_btop(x)
#define i386_ptob(x)            (((pmap_paddr_t)(x)) << I386_PGSHIFT)
#define machine_ptob(x)         i386_ptob(x)

/*
 *	Round off or truncate to the nearest page.  These will work
 *	for either addresses or counts.  (i.e. 1 byte rounds to 1 page
 *	bytes.
 */

#define i386_round_page(x)      ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \
	                                ~(I386_PGBYTES-1))
#define i386_trunc_page(x)      (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))


#define VM_MIN_ADDRESS64        ((user_addr_t) 0x0000000000000000ULL)
/*
 * default top of user stack... it grows down from here
 */
#define VM_USRSTACK64           ((user_addr_t) 0x00007FFEEFC00000ULL)

/*
 * XXX TODO: Obsolete?
 */
#define VM_DYLD64               ((user_addr_t) 0x00007FFF5FC00000ULL)
#define VM_LIB64_SHR_DATA       ((user_addr_t) 0x00007FFF60000000ULL)
#define VM_LIB64_SHR_TEXT       ((user_addr_t) 0x00007FFF80000000ULL)
/*
 * the end of the usable user address space , for now about 47 bits.
 * the 64 bit commpage is past the end of this
 */
#define VM_MAX_PAGE_ADDRESS     ((user_addr_t) 0x00007FFFFFE00000ULL)
/*
 * canonical end of user address space for limits checking
 */
#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)


/* system-wide values */
#define MACH_VM_MIN_ADDRESS             ((mach_vm_offset_t) 0)
#define MACH_VM_MAX_ADDRESS             ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)

/* process-relative values (all 32-bit legacy only for now) */
#define VM_MIN_ADDRESS          ((vm_offset_t) 0)
#define VM_USRSTACK32           ((vm_offset_t) 0xC0000000)      /* ASLR slides stack down by up to 1 MB */
#define VM_MAX_ADDRESS          ((vm_offset_t) 0xFFE00000)


#ifdef  KERNEL_PRIVATE

#define TEST_PAGE_SIZE_16K      FALSE
#define TEST_PAGE_SIZE_4K       TRUE

/* Kernel-wide values */
#define KB              (1024ULL)
#define MB              (1024*KB)
#define GB              (1024*MB)

/*
 * Maximum physical memory supported.
 */
#define K32_MAXMEM      (32*GB)
#define K64_MAXMEM      (1536*GB)
#define KERNEL_MAXMEM   K64_MAXMEM

/*
 * XXX
 * The kernel max VM address is limited to 0xFF3FFFFF for now because
 * some data structures are explicitly allocated at 0xFF400000 without
 * VM's knowledge (see osfmk/i386/locore.s for the allocation of PTmap and co.).
 * We can't let VM allocate memory from there.
 */


#define KERNEL_IMAGE_TO_PHYS(x) (x)
#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 39
#define VM_MIN_KERNEL_ADDRESS           ((vm_offset_t) 0xFFFFFF8000000000UL)
#define VM_MIN_KERNEL_PAGE              ((ppnum_t)0)
#define VM_MIN_KERNEL_AND_KEXT_ADDRESS  (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL)
#define VM_MAX_KERNEL_ADDRESS           ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL)
#define VM_MAX_KERNEL_ADDRESS_EFI32     ((vm_offset_t) 0xFFFFFF80FFFFEFFFUL)
#define KEXT_ALLOC_MAX_OFFSET (2 * 1024 * 1024 * 1024UL)
#define KEXT_ALLOC_BASE(x)  ((x) - KEXT_ALLOC_MAX_OFFSET)
#define KEXT_ALLOC_SIZE(x)  (KEXT_ALLOC_MAX_OFFSET - (x))

#define VM_KERNEL_STRIP_PTR(_v) (_v)

#define VM_KERNEL_ADDRESS(va)   ((((vm_address_t)(va))>=VM_MIN_KERNEL_AND_KEXT_ADDRESS) && \
	                        (((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS))

#define VM_MAP_MIN_ADDRESS      MACH_VM_MIN_ADDRESS
#define VM_MAP_MAX_ADDRESS      MACH_VM_MAX_ADDRESS

/* FIXME  - always leave like this? */
#if KASAN
/* Increase the stack sizes to account for the redzones that get added to every
 * stack object. */
# define INTSTACK_SIZE (I386_PGBYTES*4*4)
# define KERNEL_STACK_SIZE (I386_PGBYTES*4*4)
#elif DEBUG
# define INTSTACK_SIZE (I386_PGBYTES*4)
# define KERNEL_STACK_SIZE (I386_PGBYTES*6)
#else
# define INTSTACK_SIZE (I386_PGBYTES*4)
# define KERNEL_STACK_SIZE (I386_PGBYTES*4)
#endif

#ifdef  MACH_KERNEL_PRIVATE

/* For implementing legacy 32-bit interfaces */
#define VM32_SUPPORT                    1
#define VM32_MIN_ADDRESS                ((vm32_offset_t) 0)
#define VM32_MAX_ADDRESS                ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))

/*
 * kalloc() parameters:
 *
 * Historically kalloc's underlying zones were power-of-2 sizes, with a
 * KALLOC_MINSIZE of 16 bytes.  The allocator ensured that
 * (sizeof == alignof) >= 16 for all kalloc allocations.
 *
 * Today kalloc may use zones with intermediate sizes, constrained by
 * KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN.
 *
 * The common alignment for LP64 is for longs and pointers i.e. 8 bytes.
 */


#define KALLOC_MINSIZE          16      /* minimum allocation size */
#define KALLOC_LOG2_MINALIGN    4       /* log2 minimum alignment */

#define LINEAR_KERNEL_ADDRESS   ((vm_offset_t) 0x00000000)

#define VM_MIN_KERNEL_LOADED_ADDRESS    ((vm_offset_t) 0xFFFFFF8000000000UL)
#define VM_MAX_KERNEL_LOADED_ADDRESS    ((vm_offset_t) 0xFFFFFF801FFFFFFFUL)

#define NCOPY_WINDOWS 0


/*
 *	Conversion between 80386 pages and VM pages
 */

#define trunc_i386_to_vm(p)     (atop(trunc_page(i386_ptob(p))))
#define round_i386_to_vm(p)     (atop(round_page(i386_ptob(p))))
#define vm_to_i386(p)           (i386_btop(ptoa(p)))


#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op)     \
	MACRO_BEGIN                                                     \
	        pmap_set_cache_attributes(VM_PAGE_GET_PHYS_PAGE(mem), (cache_attr));    \
	        (object)->set_cache_attr = TRUE;                                \
	        (void) batch_pmap_op;                                   \
	MACRO_END

#define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, cache_attr, num_pages, batch_pmap_op) \
	MACRO_BEGIN                                                     \
	(void) user_page_list;                                          \
	(void) num_pages;                                               \
	(void) batch_pmap_op;                                           \
	MACRO_END

#define IS_USERADDR64_CANONICAL(addr)                   \
	((addr) < (VM_MAX_USER_PAGE_ADDRESS))

#endif  /* MACH_KERNEL_PRIVATE */

#endif  /* KERNEL_PRIVATE */

#endif  /* _MACH_I386_VM_PARAM_H_ */
Commit	Line	Data
1c79356b	1	/*
39236c6e	2	* Copyright (c) 2000-2012 Apple Inc. All rights reserved.
1c79356b	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
0a7de745	5	*
2d21ac55 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
0a7de745	14	*
2d21ac55 A	15	* Please obtain a copy of the License at
2d21ac55 A	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
0a7de745	17	*
2d21ac55 A	18	* The Original Code and all software distributed under the License are
2d21ac55 A	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
0a7de745	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/*
	29	* @OSF_COPYRIGHT@
	30	*/
0a7de745	31	/*
1c79356b A	32	* Mach Operating System
	33	* Copyright (c) 1991,1990,1989,1988 Carnegie Mellon University
	34	* All Rights Reserved.
0a7de745	35	*
1c79356b A	36	* Permission to use, copy, modify and distribute this software and its
	37	* documentation is hereby granted, provided that both the copyright
	38	* notice and this permission notice appear in all copies of the
	39	* software, derivative works or modified versions, and any portions
	40	* thereof, and that both notices appear in supporting documentation.
0a7de745	41	*
1c79356b A	42	* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
	43	* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
	44	* ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
0a7de745	45	*
1c79356b	46	* Carnegie Mellon requests users of this software to return to
0a7de745	47	*
1c79356b A	48	* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
	49	* School of Computer Science
	50	* Carnegie Mellon University
	51	* Pittsburgh PA 15213-3890
0a7de745	52	*
1c79356b A	53	* any improvements or extensions that they make and grant Carnegie Mellon
	54	* the rights to redistribute these changes.
	55	*/
	56
0a7de745	57	/*
1c79356b A	58	* Copyright (c) 1994 The University of Utah and
	59	* the Computer Systems Laboratory at the University of Utah (CSL).
	60	* All rights reserved.
	61	*
	62	* Permission to use, copy, modify and distribute this software is hereby
	63	* granted provided that (1) source code retains these copyright, permission,
	64	* and disclaimer notices, and (2) redistributions including binaries
	65	* reproduce the notices in supporting documentation, and (3) all advertising
	66	* materials mentioning features or use of this software display the following
	67	* acknowledgement: ``This product includes software developed by the
	68	* Computer Systems Laboratory at the University of Utah.''
	69	*
	70	* THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
	71	* IS" CONDITION. THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
	72	* ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
	73	*
	74	* CSL requests users of this software to return to csl-dist@cs.utah.edu any
	75	* improvements that they make and grant CSL redistribution rights.
	76	*
	77	*/
	78
	79	/*
	80	* File: vm_param.h
	81	* Author: Avadis Tevanian, Jr.
	82	* Date: 1985
	83	*
	84	* I386 machine dependent virtual memory parameters.
	85	* Most of the declarations are preceeded by I386_ (or i386_)
	86	* which is OK because only I386 specific code will be using
	87	* them.
	88	*/
	89
0a7de745	90	#ifndef _MACH_I386_VM_PARAM_H_
1c79356b A	91	#define _MACH_I386_VM_PARAM_H_
1c79356b A	92
0a7de745	93	#define BYTE_SIZE 8 /* byte size in bits */
1c79356b	94
0a7de745 A	95	#define I386_PGBYTES 4096 /* bytes per 80386 page */
0a7de745 A	96	#define I386_PGSHIFT 12 /* bitshift for pages */
91447636	97
0a7de745 A	98	#define PAGE_SIZE I386_PGBYTES
	99	#define PAGE_SHIFT I386_PGSHIFT
	100	#define PAGE_MASK (PAGE_SIZE - 1)
1c79356b	101
fe8ab488 A	102	#define PAGE_MAX_SHIFT PAGE_SHIFT
	103	#define PAGE_MAX_SIZE PAGE_SIZE
	104	#define PAGE_MAX_MASK PAGE_MASK
	105
	106	#define PAGE_MIN_SHIFT PAGE_SHIFT
	107	#define PAGE_MIN_SIZE PAGE_SIZE
	108	#define PAGE_MIN_MASK PAGE_MASK
	109
0a7de745 A	110	#define I386_LPGBYTES 210241024 /* bytes per large page */
	111	#define I386_LPGSHIFT 21 /* bitshift for large pages */
	112	#define I386_LPGMASK (I386_LPGBYTES-1)
b0d623f7	113
1c79356b A	114	/*
	115	* Convert bytes to pages and convert pages to bytes.
	116	* No rounding is used.
	117	*/
	118
0a7de745 A	119	#define i386_btop(x) ((ppnum_t)((x) >> I386_PGSHIFT))
	120	#define machine_btop(x) i386_btop(x)
	121	#define i386_ptob(x) (((pmap_paddr_t)(x)) << I386_PGSHIFT)
	122	#define machine_ptob(x) i386_ptob(x)
1c79356b A	123
	124	/*
	125	* Round off or truncate to the nearest page. These will work
	126	* for either addresses or counts. (i.e. 1 byte rounds to 1 page
	127	* bytes.
	128	*/
	129
0a7de745 A	130	#define i386_round_page(x) ((((pmap_paddr_t)(x)) + I386_PGBYTES - 1) & \
	131	~(I386_PGBYTES-1))
	132	#define i386_trunc_page(x) (((pmap_paddr_t)(x)) & ~(I386_PGBYTES-1))
1c79356b	133
0c530ab8 A	134
0c530ab8 A	135
0a7de745	136	#define VM_MIN_ADDRESS64 ((user_addr_t) 0x0000000000000000ULL)
0c530ab8 A	137	/*
	138	* default top of user stack... it grows down from here
	139	*/
0a7de745	140	#define VM_USRSTACK64 ((user_addr_t) 0x00007FFEEFC00000ULL)
5ba3f43e A	141
	142	/*
	143	* XXX TODO: Obsolete?
	144	*/
0a7de745 A	145	#define VM_DYLD64 ((user_addr_t) 0x00007FFF5FC00000ULL)
	146	#define VM_LIB64_SHR_DATA ((user_addr_t) 0x00007FFF60000000ULL)
	147	#define VM_LIB64_SHR_TEXT ((user_addr_t) 0x00007FFF80000000ULL)
0c530ab8 A	148	/*
	149	* the end of the usable user address space , for now about 47 bits.
	150	* the 64 bit commpage is past the end of this
	151	*/
0a7de745	152	#define VM_MAX_PAGE_ADDRESS ((user_addr_t) 0x00007FFFFFE00000ULL)
0c530ab8 A	153	/*
	154	* canonical end of user address space for limits checking
	155	*/
	156	#define VM_MAX_USER_PAGE_ADDRESS ((user_addr_t)0x00007FFFFFFFF000ULL)
	157
	158
91447636	159	/* system-wide values */
0a7de745 A	160	#define MACH_VM_MIN_ADDRESS ((mach_vm_offset_t) 0)
0a7de745 A	161	#define MACH_VM_MAX_ADDRESS ((mach_vm_offset_t) VM_MAX_PAGE_ADDRESS)
91447636 A	162
91447636 A	163	/* process-relative values (all 32-bit legacy only for now) */
0a7de745 A	164	#define VM_MIN_ADDRESS ((vm_offset_t) 0)
	165	#define VM_USRSTACK32 ((vm_offset_t) 0xC0000000) /* ASLR slides stack down by up to 1 MB */
	166	#define VM_MAX_ADDRESS ((vm_offset_t) 0xFFE00000)
0c530ab8 A	167
0c530ab8 A	168
0a7de745	169	#ifdef KERNEL_PRIVATE
1c79356b	170
fe8ab488 A	171	#define TEST_PAGE_SIZE_16K FALSE
	172	#define TEST_PAGE_SIZE_4K TRUE
	173
91447636	174	/* Kernel-wide values */
0a7de745 A	175	#define KB (1024ULL)
	176	#define MB (1024*KB)
	177	#define GB (1024*MB)
b0d623f7 A	178
	179	/*
	180	* Maximum physical memory supported.
	181	*/
0a7de745 A	182	#define K32_MAXMEM (32*GB)
	183	#define K64_MAXMEM (1536*GB)
	184	#define KERNEL_MAXMEM K64_MAXMEM
b0d623f7	185
0c530ab8 A	186	/*
	187	* XXX
	188	* The kernel max VM address is limited to 0xFF3FFFFF for now because
	189	* some data structures are explicitly allocated at 0xFF400000 without
	190	* VM's knowledge (see osfmk/i386/locore.s for the allocation of PTmap and co.).
	191	* We can't let VM allocate memory from there.
	192	*/
	193
b0d623f7	194
6d2010ae	195	#define KERNEL_IMAGE_TO_PHYS(x) (x)
d9a64523	196	#define VM_KERNEL_POINTER_SIGNIFICANT_BITS 39
0a7de745 A	197	#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL)
	198	#define VM_MIN_KERNEL_PAGE ((ppnum_t)0)
	199	#define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL)
	200	#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL)
	201	#define VM_MAX_KERNEL_ADDRESS_EFI32 ((vm_offset_t) 0xFFFFFF80FFFFEFFFUL)
6d2010ae A	202	#define KEXT_ALLOC_MAX_OFFSET (2 * 1024 * 1024 * 1024UL)
	203	#define KEXT_ALLOC_BASE(x) ((x) - KEXT_ALLOC_MAX_OFFSET)
	204	#define KEXT_ALLOC_SIZE(x) (KEXT_ALLOC_MAX_OFFSET - (x))
b0d623f7	205
d9a64523 A	206	#define VM_KERNEL_STRIP_PTR(_v) (_v)
d9a64523 A	207
0a7de745 A	208	#define VM_KERNEL_ADDRESS(va) ((((vm_address_t)(va))>=VM_MIN_KERNEL_AND_KEXT_ADDRESS) && \
0a7de745 A	209	(((vm_address_t)(va))<=VM_MAX_KERNEL_ADDRESS))
6d2010ae	210
0a7de745 A	211	#define VM_MAP_MIN_ADDRESS MACH_VM_MIN_ADDRESS
0a7de745 A	212	#define VM_MAP_MAX_ADDRESS MACH_VM_MAX_ADDRESS
0c530ab8	213
1c79356b	214	/* FIXME - always leave like this? */
5ba3f43e A	215	#if KASAN
	216	/* Increase the stack sizes to account for the redzones that get added to every
	217	* stack object. */
	218	# define INTSTACK_SIZE (I386_PGBYTES44)
	219	# define KERNEL_STACK_SIZE (I386_PGBYTES44)
d9a64523 A	220	#elif DEBUG
	221	# define INTSTACK_SIZE (I386_PGBYTES*4)
	222	# define KERNEL_STACK_SIZE (I386_PGBYTES*6)
5ba3f43e A	223	#else
	224	# define INTSTACK_SIZE (I386_PGBYTES*4)
	225	# define KERNEL_STACK_SIZE (I386_PGBYTES*4)
	226	#endif
91447636	227
0a7de745	228	#ifdef MACH_KERNEL_PRIVATE
91447636 A	229
91447636 A	230	/* For implementing legacy 32-bit interfaces */
0a7de745 A	231	#define VM32_SUPPORT 1
	232	#define VM32_MIN_ADDRESS ((vm32_offset_t) 0)
	233	#define VM32_MAX_ADDRESS ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
91447636	234
316670eb A	235	/*
	236	* kalloc() parameters:
	237	*
	238	* Historically kalloc's underlying zones were power-of-2 sizes, with a
	239	* KALLOC_MINSIZE of 16 bytes. The allocator ensured that
	240	* (sizeof == alignof) >= 16 for all kalloc allocations.
	241	*
	242	* Today kalloc may use zones with intermediate sizes, constrained by
	243	* KALLOC_MINSIZE and a minimum alignment, expressed by KALLOC_LOG2_MINALIGN.
	244	*
	245	* The common alignment for LP64 is for longs and pointers i.e. 8 bytes.
	246	*/
	247
b0d623f7	248
0a7de745 A	249	#define KALLOC_MINSIZE 16 /* minimum allocation size */
0a7de745 A	250	#define KALLOC_LOG2_MINALIGN 4 /* log2 minimum alignment */
316670eb	251
0a7de745	252	#define LINEAR_KERNEL_ADDRESS ((vm_offset_t) 0x00000000)
b0d623f7	253
0a7de745 A	254	#define VM_MIN_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF8000000000UL)
0a7de745 A	255	#define VM_MAX_KERNEL_LOADED_ADDRESS ((vm_offset_t) 0xFFFFFF801FFFFFFFUL)
b0d623f7 A	256
	257	#define NCOPY_WINDOWS 0
	258
316670eb	259
b0d623f7	260
1c79356b A	261	/*
	262	* Conversion between 80386 pages and VM pages
	263	*/
	264
0a7de745 A	265	#define trunc_i386_to_vm(p) (atop(trunc_page(i386_ptob(p))))
	266	#define round_i386_to_vm(p) (atop(round_page(i386_ptob(p))))
	267	#define vm_to_i386(p) (i386_btop(ptoa(p)))
1c79356b	268
1c79356b	269
0a7de745 A	270	#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op) \
	271	MACRO_BEGIN \
	272	pmap_set_cache_attributes(VM_PAGE_GET_PHYS_PAGE(mem), (cache_attr)); \
	273	(object)->set_cache_attr = TRUE; \
	274	(void) batch_pmap_op; \
	275	MACRO_END
316670eb	276
0a7de745 A	277	#define PMAP_BATCH_SET_CACHE_ATTR(object, user_page_list, cache_attr, num_pages, batch_pmap_op) \
	278	MACRO_BEGIN \
	279	(void) user_page_list; \
	280	(void) num_pages; \
	281	(void) batch_pmap_op; \
d1ecb069 A	282	MACRO_END
d1ecb069 A	283
0a7de745	284	#define IS_USERADDR64_CANONICAL(addr) \
d9a64523	285	((addr) < (VM_MAX_USER_PAGE_ADDRESS))
0c530ab8	286
0a7de745	287	#endif /* MACH_KERNEL_PRIVATE */
91447636	288
0a7de745	289	#endif /* KERNEL_PRIVATE */
91447636	290
0a7de745	291	#endif /* _MACH_I386_VM_PARAM_H_ */