docs: updated GDT documentation

.wiki/Kernel-documentation.md

@@ -14,9 +14,12 @@ The kernel is booted using the limine boot protocol.
 # General concepts
 ## Kernel initialization
 The single parts of the kernel are initialized in the following order:
-  - **Global Descriptor Table**
   - **Page Frame Manager**
-  - **Interrupt Descriptor Table**
+  - **Interrupts**
+    - **[IDT] Interrupt Descriptor Table**
+    - **[PIC] Programmable Interrupt Controller**
+  - **Paging**
+  - **Kernel Heap**
 
 ## Interrupt handling
 OSDev Wiki: [Interrupts](https://wiki.osdev.org/Interrupts)
@@ -448,26 +451,10 @@ OSDev Wiki: [Global Descriptor Table](https://wiki.osdev.org/GDT)
 
 #### `gdt_selector_E` - enum
 - **Null**
-- **Kernel Code**
-- **Kernel Data**
-- **User Null**
-- **User Code**
-- **User Data**
+- **Kernel Code** - Readable
+- **Kernel Data** - Readable + Writable
 
-#### `gdt_descriptor_T` - struct [packed]
-**Well documented on the osdev wiki.**
-
-#### `gdt_entry_T` - struct [packed]
-**Well documented on the osdev wiki.**
-
-#### `gdt_T` - struct [packed / page aligned]
-A template that holds a `gdt_entry_T` for every selector
-
-#### `g_default_gdt` - global variable
-The default GDT configuration loaded when the GDT gets initialized.
-
-#### `gdt_init()` - function (void)
-Loads a descriptor of `g_default_gdt` as the system GDT.
+NoxOS uses the GDT loaded by limine, because in 64 bit mode a GDT is only needed for backwards compatability.
 
 ### interrupts.h
 This header contains all the stuff, needed to init and handle Interrupts.