void
uvm_init(void)
{
vaddr_t kvm_start, kvm_end;
/*
* step 0: ensure that the hardware set the page size
*/
if (uvmexp.pagesize == 0) {
panic("uvm_init: page size not set");
}
/*
* step 1: zero the uvm structure
*/
memset(&uvm, 0, sizeof(uvm));
averunnable.fscale = FSCALE;
uvm_amap_init();
/*
* step 2: init the page sub-system. this includes allocating the
* vm_page structures, and setting up all the page queues (and
* locks). available memory will be put in the "free" queue.
* kvm_start and kvm_end will be set to the area of kernel virtual
* memory which is available for general use.
*/
uvm_page_init(&kvm_start, &kvm_end);
/*
* step 3: init the map sub-system. allocates the static pool of
* vm_map_entry structures that are used for "special" kernel maps
* (e.g. kernel_map, kmem_map, etc...).
*/
uvm_map_init();
/*
* step 4: setup the kernel's virtual memory data structures. this
* includes setting up the kernel_map/kernel_object.
*/
uvm_km_init(kvm_start, kvm_end);
/*
* step 5: init the pmap module. the pmap module is free to allocate
* memory for its private use (e.g. pvlists).
*/
pmap_init();
/*
* step 6: init the kernel memory allocator. after this call the
* kernel memory allocator (malloc) can be used. this includes
* setting up the kmem_map.
*/
kmeminit();
#ifdef DEBUG
debug_init();
#endif
/*
* step 7: init all pagers and the pager_map.
*/
uvm_pager_init();
/*
* step 8: init the uvm_loan() facility.
*/
uvm_loan_init();
/*
* Initialize pools. This must be done before anyone manipulates
* any vm_maps because we use a pool for some map entry structures.
*/
pool_subsystem_init();
/*
* init slab memory allocator kmem(9).
*/
kmem_init();
/*
* the VM system is now up! now that kmem is up we can resize the
* <obj,off> => <page> hash table for general use and enable paging
* of kernel objects.
*/
uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS,
UAO_FLAG_KERNSWAP);
uvmpdpol_reinit();
/*
* init anonymous memory systems
*/
uvm_anon_init();
uvm_uarea_init();
/*
* init readahead module
*/
uvm_ra_init();
}
void
uvm_init(void)
{
vaddr_t kvm_start, kvm_end;
/*
* Ensure that the hardware set the page size, zero the UVM structure.
*/
if (uvmexp.pagesize == 0) {
panic("uvm_init: page size not set");
}
memset(&uvm, 0, sizeof(uvm));
averunnable.fscale = FSCALE;
/*
* Init the page sub-system. This includes allocating the vm_page
* structures, and setting up all the page queues (and locks).
* Available memory will be put in the "free" queue, kvm_start and
* kvm_end will be set to the area of kernel virtual memory which
* is available for general use.
*/
uvm_page_init(&kvm_start, &kvm_end);
/*
* Init the map sub-system.
*/
uvm_map_init();
/*
* Setup the kernel's virtual memory data structures. This includes
* setting up the kernel_map/kernel_object.
* Bootstrap all kernel memory allocators.
*/
uao_init();
uvm_km_bootstrap(kvm_start, kvm_end);
/*
* Setup uvm_map caches and init the amap.
*/
uvm_map_init_caches();
uvm_amap_init();
/*
* Init the pmap module. The pmap module is free to allocate
* memory for its private use (e.g. pvlists).
*/
pmap_init();
/*
* Make kernel memory allocators ready for use.
* After this call the pool/kmem memory allocators can be used.
*/
uvm_km_init();
#ifdef DEBUG
debug_init();
#endif
/*
* Init all pagers and the pager_map.
*/
uvm_pager_init();
/*
* Initialize the uvm_loan() facility.
*/
uvm_loan_init();
/*
* Init emap subsystem.
*/
uvm_emap_sysinit();
/*
* The VM system is now up! Now that kmem is up we can resize the
* <obj,off> => <page> hash table for general use and enable paging
* of kernel objects.
*/
uao_create(VM_MAX_KERNEL_ADDRESS - VM_MIN_KERNEL_ADDRESS,
UAO_FLAG_KERNSWAP);
uvmpdpol_reinit();
/*
* Init anonymous memory systems.
*/
uvm_anon_init();
uvm_uarea_init();
/*
* Init readahead mechanism.
*/
uvm_ra_init();
}