tasking: continue working on page directory switching

src/tasking/switch.asm

@@ -32,6 +32,9 @@ switchProcess:
     mov esp, [edx + 4]      ; esp = next_process_ptr->kesp
     mov [current], edx      ; current = next_process_ptr
 
+    mov eax, [edx + 40]
+    mov cr3, eax
+
     pop edi
     pop esi
     pop ebx

src/tasking/task.c

@@ -71,7 +71,7 @@ Process* task_create(uint32_t func, void** args, uint32_t arg_count, uint32_t ri
     p->context->eip = (uint32_t)trapret;
     p->kesp = (uint32_t)sp;
 
-    p->page_directory = kpage_dir;
+    p->page_directory = ring == 0 ? kpage_dir : (uint32_t*)create_page_dir();
 
     p->next = 0;