From ce5747c0744d46689fb18ad0ce1ef057b4e04bc7 Mon Sep 17 00:00:00 2001
From: sborovic <sborovic@dmz.rs>
Date: Sun, 11 Feb 2024 17:12:29 +0000
Subject: [PATCH] Update Home

---
 Home.md | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Home.md b/Home.md
index 887431d..d4a5ec6 100644
--- a/Home.md
+++ b/Home.md
@@ -6,12 +6,10 @@ A great way to learn something new is to retrace the steps taken by someone who
 > **Suggested reading**:
 > [Operating Systems: From 0 to 1, Chapters 1–6][os01]
 
-To safeguard against dependency hell, all the essential software needed to develop and run our OS will be provided through a set of Docker images orchestrated using Docker Compose. For those unfamiliar with Docker, a command cheatsheet will be provided later on.
+To safeguard against dependency hell, all the essential software needed to develop and run our OS will be provided through a set of Docker images. For those unfamiliar with Docker, a command cheatsheet will be provided later on.
 
 Dilemmas:
 * gcc or clang?
-* 32-bit or 64-bit?
-* bootloader from scratch or use Limine?
 
 To-dos:
 * Choose a git workflow.
@@ -30,6 +28,13 @@ Preliminary list of essential software:
 > **Suggested reading**:
 > [Operating Systems: From 0 to 1, Chapter 7: *Bootloader*][os01]
 
+A few dilemmas had already emerged before even having started writing any code.
+
+**Should the kernel be 32-bit or 64-bit?**
+* A 32-bit kernel can provide access to 2<sup>32</sup> memory addresses. For a byte-addressable memory, that equals 2<sup>32</sup> B = 4*2<sup>30</sup> B = 4 GiB of physical memory. On the other hand, a 64-bit kernel can provide access to 2<sup>64</sup> B = 16 EiB of physical memory.
+* Having more RAM available makes heavy multitasking and memory-intensive operations perform better. On the other hand, 64-bit programs use about 50% more memory then their 32-bit counterpart; this is due to numerous reasons, one of which is that 64-bit pointers take up twice as much space as 32-bit ones.
+* Booting a 64–bit kernel vs 32-bit kernel is different. For example, 64-bit kernels require running the processor in [long mode](https://en.wikipedia.org/wiki/Long_mode).
+
 ### Step 2:
 ...