vmem_init
if (vmem_init(vm, name, base, size, quantum, qcache_max,
vmem_t *vmem_init(vmem_t *vm, const char *name, vmem_addr_t base,
vmem_init(memguard_arena, "memguard arena", base, memguard_mapsize,
vmem_init(buffer_arena, "buffer arena", kmi->buffer_sva, size,
vmem_init(transient_arena, "transient arena",
vmem_init(kernel_arena, "kernel arena", 0, 0, PAGE_SIZE, 0, 0);