better sections for linux blog post

_posts/2021-11-06-linux-contribution.md

@@ -8,55 +8,61 @@ author: Mahdi
 published: false
 ---
 
-November 6th:
-Create a virtual machine for Archlinux on my macOS using QEMU:
-- [Download the Archlinux iso image](https://archlinux.org/download/)
-- Create a qemu disk:
+I use a MacBook Pro (mid-2014) with macOS, so I need to have a virtual machine for running a linux system with my kernel. I will also be doing the coding on this linux virtual machine as building the kernel is easier in a linux system than macOS.
+
+# Setting up the Virtual Machine (Archlinux)
+ 
+I create a virtual machine with Archlinux on my macOS using QEMU:
+
+1. [Download the Archlinux iso image](https://archlinux.org/download/)
+2. Create a qemu disk:
 {% highlight bash %}
 qemu-img create disk.img 15G
 {% endhighlight %}
-- Start the machine and [install Archlinux](https://wiki.archlinux.org/title/Installation_guide)
+3. Start the machine and [install Archlinux](https://wiki.archlinux.org/title/Installation_guide)
 {% highlight bash %}
 qemu-system-x86_64 -cdrom archlinux-2021.11.01-x86_64.iso -boot order=d -drive format=raw,file=disk.img -m 8G
 {% endhighlight %}
-- Start the machine after installing (note I forward 2222 to 22 so I can SSH/SCP to the virtual machine. I also set 4 CPUs so I can use threads for faster builds in the VM)
+4. Start the machine after installing (note I forward 2222 to 22 so I can SSH/SCP to the virtual machine. I also set 4 CPUs so I can use threads for faster builds in the VM)
 {% highlight bash %}
 qemu-system-x86_64 -boot -drive format=raw,file=disk.img -m 8G -smp cpus=4 -net user,hostfwd=tcp::2222-:22 -net nic
 {% endhighlight %}
-- Install dependencies:
+5. Install dependencies for building the kernel:
 {% highlight bash %}
 pacman -S gcc git make
 {% endhighlight %}
-- Clone linux:
+6. Clone linux:
 {% highlight bash %}
 git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
 {% endhighlight %}
-- Install necessary dependencies
+7. necessary dependencies
 {% highlight bash %}
 pacman -S flex base-devel xmlto kmod inetutils bc libelf git cpio perl tar xz
 {% endhighlight %}
-- Copy configuration of archlinux (optional: also [use modprobed-db to remove unnecessary modules](https://wiki.archlinux.org/title/Kernel/Traditional_compilation#Default_Arch_configuration))
+8. Copy configuration of archlinux (optional: also [use modprobed-db to remove unnecessary modules](https://wiki.archlinux.org/title/Kernel/Traditional_compilation#Default_Arch_configuration))
 {% highlight bash %}
 zcat /proc/config.gz > .config
 {% endhighlight %}
-- Make! The `-j8` parameter specifies the number of threads to be used by the build. My CPU has 8 threads and so I use it all.
+9. Make! The `-j8` parameter specifies the number of threads to be used by the build. My CPU has 8 threads and so I use it all.
 {% highlight bash %}
 make -j8
 {% endhighlight %}
-- Install the newly built Kernel. I create this as a script file and run it after every build from the root of repository.
+10. Install the newly built Kernel. I create this as a script file and run it after every build from the root of repository.
 {% highlight bash %}
 make -j8 modules_install
 RELEASE=$(cat include/config/kernel.release)
 cp -v arch/x86_64/boot/bzImage /boot/vmlinuz-linux${RELEASE}
 mkinitcpio -k $RELEASE -g /boot/initramfs-linux${RELEASE}.img
 mkinitcpio -k $RELEASE -s autodetect -g /boot/initramfs-linux-fallback${RELEASE}.img
-{% endhighlight %}
-- Run grub-mkconfig to add a menu option for this new kernel
-{% highlight bash %}
 grub-mkconfig -o /boot/grub/grub.cfg
 {% endhighlight %}
 - Reboot and choose the new kernel (might be under "Advanced" in the bootloader)
-- Setup your environment for development. Mine consists of setting up tmux so I can have multiple terminals and neovim.
+
+# Development Environment
+
+Setup your environment for development. Mine consists of setting up tmux so I can have multiple terminals and neovim.
+
+In the guest machine:
 {% highlight bash %}
 pacman -S neovim openssh tmux
 echo '[[ -z "$TMUX" ]] && exec tmux' >> /etc/profile
@@ -69,7 +75,7 @@ scp -P 2222 ~/.tmux.conf root@localhost:/root
 scp -r -P 2222 ~/.config/nvim root@localhost:/root/.config/
 {% endhighlight %}
 
-# Debugging Logs
+# Debugging
 There is a `pr_debug` function used over the code, in order to enable those logs in `dmesg` for a specific module, you can do this:
 
 {% highlight bash %}