xnu-2422.1.72.tar.gz

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

diff --git a/osfmk/mach/i386/vm_param.h b/osfmk/mach/i386/vm_param.h
index eae58369a20fa8ff5bd2dddda4d167f2f8cb4033..02bef271f1a1822694bb5cc61058708a653d167d 100644 (file)
--- a/osfmk/mach/i386/vm_param.h
+++ b/osfmk/mach/i386/vm_param.h
@@ -1,5 +1,5 @@
 /*
 /*

- * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2012 Apple Inc. All rights reserved.

  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 


@@ -95,6 +95,12 @@
 #define I386_PGBYTES           4096            /* bytes per 80386 page */
 #define I386_PGSHIFT           12              /* bitshift for pages */
 
 #define I386_PGBYTES           4096            /* bytes per 80386 page */
 #define I386_PGSHIFT           12              /* bitshift for pages */
 

+#ifdef PRIVATE
+#define KERNEL_PAGE_SIZE       I386_PGBYTES
+#define KERNEL_PAGE_SHIFT      I386_PGSHIFT
+#define KERNEL_PAGE_MASK       (KERNEL_PAGE_SIZE-1)
+#endif
+

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


@@ -111,6 +117,7 @@
 #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 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
 
 /*
  *     Round off or truncate to the nearest page.  These will work


@@ -149,7 +156,7 @@
 
 /* process-relative values (all 32-bit legacy only for now) */
 #define VM_MIN_ADDRESS         ((vm_offset_t) 0)
 
 /* 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)
+#define VM_USRSTACK32          ((vm_offset_t) 0xC0000000)      /* ASLR slides stack down by up to 1 MB */

 #define VM_MAX_ADDRESS         ((vm_offset_t) 0xFFE00000)
 
 
 #define VM_MAX_ADDRESS         ((vm_offset_t) 0xFFE00000)
 
 


@@ -165,12 +172,8 @@
  * Maximum physical memory supported.
  */
 #define        K32_MAXMEM      (32*GB)
  * Maximum physical memory supported.
  */
 #define        K32_MAXMEM      (32*GB)

-#define        K64_MAXMEM      (96*GB)
-#if defined(__i386__)
-#define KERNEL_MAXMEM  K32_MAXMEM
-#else
+#define        K64_MAXMEM      (128*GB)

 #define KERNEL_MAXMEM  K64_MAXMEM
 #define KERNEL_MAXMEM  K64_MAXMEM

-#endif

 
 /*
  * XXX
 
 /*
  * XXX


@@ -180,25 +183,19 @@
  * We can't let VM allocate memory from there.
  */
 
  * We can't let VM allocate memory from there.
  */
 

-#if defined(__i386__)
-
-#define VM_MIN_KERNEL_ADDRESS  ((vm_offset_t) 0x00001000U)
-#define VM_MIN_KERNEL_AND_KEXT_ADDRESS VM_MIN_KERNEL_ADDRESS
-
-#define VM_MAX_KERNEL_ADDRESS  ((vm_offset_t) 0xFE7FFFFFU)
-#define KERNEL_STACK_SIZE              (I386_PGBYTES*4)

 
 

-#elif defined(__x86_64__)
+#define KERNEL_IMAGE_TO_PHYS(x) (x)
+#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_MIN_KERNEL_ADDRESS  ((vm_offset_t) 0xFFFFFF8000000000UL)
-#define VM_MIN_KERNEL_AND_KEXT_ADDRESS (VM_MIN_KERNEL_ADDRESS - 0x80000000ULL)

 
 

-#define VM_MAX_KERNEL_ADDRESS  ((vm_offset_t) 0xFFFFFFFFFFFFEFFFUL)
-#define KERNEL_STACK_SIZE              (I386_PGBYTES*4)
-
-#else
-#error unsupported architecture
-#endif
+#define KERNEL_STACK_SIZE      (I386_PGBYTES*4)

 
 #define VM_MAP_MIN_ADDRESS     MACH_VM_MIN_ADDRESS
 #define VM_MAP_MAX_ADDRESS     MACH_VM_MAX_ADDRESS
 
 #define VM_MAP_MIN_ADDRESS     MACH_VM_MIN_ADDRESS
 #define VM_MAP_MAX_ADDRESS     MACH_VM_MAX_ADDRESS


@@ -213,16 +210,22 @@
 #define VM32_MIN_ADDRESS               ((vm32_offset_t) 0)
 #define VM32_MAX_ADDRESS               ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
 
 #define VM32_MIN_ADDRESS               ((vm32_offset_t) 0)
 #define VM32_MAX_ADDRESS               ((vm32_offset_t) (VM_MAX_PAGE_ADDRESS & 0xFFFFFFFF))
 

-#if defined(__i386__)
-
-#define LINEAR_KERNEL_ADDRESS  ((vm_offset_t) 0x00000000)
-
-#define VM_MIN_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x00000000U)
-#define VM_MAX_KERNEL_LOADED_ADDRESS   ((vm_offset_t) 0x1FFFFFFFU)
+/*
+ * 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 NCOPY_WINDOWS 4

 
 

-#elif defined(__x86_64__)
+#define        KALLOC_MINSIZE          16      /* minimum allocation size */
+#define        KALLOC_LOG2_MINALIGN    4       /* log2 minimum alignment */

 
 #define LINEAR_KERNEL_ADDRESS  ((vm_offset_t) 0x00000000)
 
 
 #define LINEAR_KERNEL_ADDRESS  ((vm_offset_t) 0x00000000)
 


@@ -231,9 +234,7 @@
 
 #define NCOPY_WINDOWS 0
 
 
 #define NCOPY_WINDOWS 0
 

-#else
-#error unsupported architecture
-#endif
+

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


@@ -243,26 +244,19 @@
 #define round_i386_to_vm(p)    (atop(round_page(i386_ptob(p))))
 #define vm_to_i386(p)          (i386_btop(ptoa(p)))
 
 #define round_i386_to_vm(p)    (atop(round_page(i386_ptob(p))))
 #define vm_to_i386(p)          (i386_btop(ptoa(p)))
 

-#define PMAP_ENTER(pmap, virtual_address, page, protection, flags, wired) \
-       MACRO_BEGIN                                     \
-       pmap_t __pmap = (pmap);                         \
-       vm_page_t __page = (page);                      \
-       vm_prot_t __prot__ =  (protection);             \
-                                                       \
-       if (__pmap == kernel_pmap) {                    \
-               __prot__ |= VM_PROT_WRITE;              \
-       } else {                                        \
-               assert(!__page->encrypted);             \
-       }                                               \
-                                                       \
-       pmap_enter(                                     \
-               __pmap,                                 \
-               (virtual_address),                      \
-               __page->phys_page,                      \
-               __prot__,                               \
-               flags,                                  \
-               (wired)                                 \
-        );                                             \
+
+#define PMAP_SET_CACHE_ATTR(mem, object, cache_attr, batch_pmap_op)    \
+       MACRO_BEGIN                                                     \
+               pmap_set_cache_attributes((mem)->phys_page, (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)                  \
        MACRO_END
 
 #define IS_USERADDR64_CANONICAL(addr)                  \