Function comments (v1)

src/mem/gdt/gdt.c

@@ -14,11 +14,20 @@
 uint64_t gdt_entries[NUM_GDT_ENTRIES];
 struct GDTR gdtr;
 
+/*
+ * gdt_load - Loads Global Descriptor Table
+ */
 static void gdt_load()
 {
     asm("lgdt %0" : : "m"(gdtr));
 }
 
+/*
+ * gdt_flush - Flushes the Global Descriptor Table
+ *
+ * This function loads new Segment Selectors to make
+ * the GDT changes take effect
+ */
 static void gdt_flush()
 {
     // Here, 0x8 is the kernel code selector
@@ -42,6 +51,15 @@ static void gdt_flush()
     );
 }
 
+/*
+ * gdt_init - Global Descriptor Table initialization 
+ *
+ * This function loads a new GDT in the CPU.
+ * It contains a null descriptor, kernel code and data
+ * segments, and user code and data segments.
+ * However, we do not use segmentation to manage memory on
+ * 64-bit x86, as it's deprecated. Instead, we use paging. 
+ */
 void gdt_init()
 {
     // Null descriptor (required)