Paging: mapped kernel, fb, early-mem, HHDM

src/mem/paging/pmm.h

@@ -4,6 +4,8 @@
 #include <limine.h>
 
 void pmm_init(struct limine_memmap_response* memmap, struct limine_hhdm_response* hhdm);
+void pmm_free(uintptr_t addr);
+uintptr_t pmm_alloc();
 
 // Might be upgraded to a freelist later.
 // For now, we can take the biggest usable region and we will be fine.