x86_64: initialise vm subsystem

arch/x86_64/init.c

@@ -38,7 +38,7 @@ static void early_vm_init(void)
 int ml_init(uintptr_t arg)
 {
 	multiboot_info_t *mb = (multiboot_info_t *)arg;
-	
+
 	bootstrap_cpu_init();
 	vgacon_init();
 
@@ -50,5 +50,19 @@ int ml_init(uintptr_t arg)
 
 	pmap_bootstrap();
 
+	vm_zone_descriptor_t vm_zones[] = {
+		{ .zd_id = VM_ZONE_DMA, .zd_node = 0, .zd_name = "dma", .zd_base = 0x00, .zd_limit = 0xffffff },
+		{ .zd_id = VM_ZONE_NORMAL, .zd_node = 0, .zd_name = "normal", .zd_base = 0x1000000, .zd_limit = UINTPTR_MAX },
+	};
+
+	vm_bootstrap(vm_zones, sizeof vm_zones / sizeof vm_zones[0]);
+
+	/* test allocation */
+	vm_page_t *p = vm_page_alloc(VM_PAGE_16K, 0);
+	void *p_ptr = vm_page_get_vaddr(p);
+	memset(p_ptr, 0x00, vm_page_order_to_bytes(VM_PAGE_16K));
+
+	printk("allocated 16K at %p", p_ptr);
+
 	return 0;
 }