x86_64: pmap: implement pmap_add()

arch/x86_64/pmap.c

@@ -285,7 +285,12 @@ void pmap_destroy(pmap_t pmap)
 
 kern_status_t pmap_add(pmap_t pmap, void *p, pfn_t pfn, enum vm_prot prot, enum pmap_flags flags)
 {
-	return KERN_OK;
+	enum page_size ps = PS_4K;
+	if (flags & PMAP_HUGEPAGE) {
+		ps = PS_2M;
+	}
+
+	return do_pmap_add(pmap, p, pfn, prot, ps);
 }
 
 kern_status_t pmap_add_block(pmap_t pmap, void *p, pfn_t pfn, size_t len, enum vm_prot prot, enum pmap_flags flags)

include/socks/pmap.h

@@ -18,6 +18,7 @@ typedef ml_pmap_t pmap_t;
 typedef ml_pfn_t pfn_t;
 
 enum pmap_flags {
+	PMAP_NORMAL = 0x00u,
 	PMAP_HUGEPAGE = 0x01u,
 };