xnu-1504.15.3.tar.gz

[apple/xnu.git] / osfmk / vm / vm_init.c

diff --git a/osfmk/vm/vm_init.c b/osfmk/vm/vm_init.c
index 11927893c5c1474aab857429b896c4095806ad09..8180254b223a5e2dbeaeac82df3c0d6cdc230260 100644 (file)
--- a/osfmk/vm/vm_init.c
+++ b/osfmk/vm/vm_init.c
@@ -66,6 +66,7 @@
 #include <mach/machine/vm_types.h>
 #include <kern/zalloc.h>
 #include <kern/kalloc.h>
+#include <kern/kext_alloc.h>
 #include <vm/vm_object.h>
 #include <vm/vm_map.h>
 #include <vm/vm_page.h>
@@ -83,10 +84,11 @@
 /* Maximum zone size is 1.5G */
 #define ZONE_MAP_MAX (1024 * 1024 * 1536) 
 
-const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_ADDRESS;
+const vm_offset_t vm_min_kernel_address = VM_MIN_KERNEL_AND_KEXT_ADDRESS;
 const vm_offset_t vm_max_kernel_address = VM_MAX_KERNEL_ADDRESS;
 
 boolean_t vm_kernel_ready = FALSE;
+boolean_t zlog_ready = FALSE;
 
 /*
  *     vm_mem_bootstrap initializes the virtual memory system.
@@ -131,17 +133,29 @@ vm_mem_bootstrap(void)
        vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling pmap_init\n"));
        pmap_init();
        
-       if (PE_parse_boot_arg("zsize", &zsizearg))
+       zlog_ready = TRUE;
+
+       if (PE_parse_boot_argn("zsize", &zsizearg, sizeof (zsizearg)))
                zsize = zsizearg * 1024ULL * 1024ULL;
        else {
                zsize = sane_size >> 2;                         /* Get target zone size as 1/4 of physical memory */
        }
 
-       if(zsize < ZONE_MAP_MIN) zsize = ZONE_MAP_MIN;  /* Clamp to min */
-       if(zsize > ZONE_MAP_MAX) zsize = ZONE_MAP_MAX;  /* Clamp to max */
+       if (zsize < ZONE_MAP_MIN)
+               zsize = ZONE_MAP_MIN;   /* Clamp to min */
+       if (zsize > sane_size >> 1)
+               zsize = sane_size >> 1; /* Clamp to half of RAM max */
+#if !__LP64__
+       if (zsize > ZONE_MAP_MAX)
+               zsize = ZONE_MAP_MAX;   /* Clamp to 1.5GB max for K32 */
+#endif /* !__LP64__ */
+
+       vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling kext_alloc_init\n"));
+       kext_alloc_init();
 
        vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling zone_init\n"));
-       zone_init(zsize);                                               /* Allocate address space for zones */
+       assert((vm_size_t) zsize == zsize);
+       zone_init((vm_size_t) zsize);                                           /* Allocate address space for zones */
        
        vm_mem_bootstrap_kprintf(("vm_mem_bootstrap: calling kalloc_init\n"));
        kalloc_init();