How do I ACS patch override (IOMMU) Manjaro

[ech0]

@Quack_Doc

if using the AUR doesn’t work for you (never got it to work for me while using manjaro) you will have to download Manjaro’s kernel and apply the patch. But fear not it’s actually really easy, (although Nvidia proprietary graphics require a few extra steps)
Simply clone the kernel version you want from manjaros repo’s

Download and add patch (an easy place to download it is from Linux-vfio source) along side other patches and add patch name to PKGBUILD below other patches
updpkgsums
Build and install the kernel, I would reccomend using kernel manager to install an LTS kernel, Update it, and then download the source and compiling that one, as doing this for every new kernel is a bit of a hassle

EDIT: Steps are pretty much for linux54

1. git clone linux54 from manjaro’s gitlab
2. cd linux54
3. download acs-overrides.patch here
4. add acs-overrides.patch to PKGBUILD in along with other patches
5. updpkgsums
   6 build and install

then of course edit grub as needed

This is how I had to do it a few days ago when setting it up on My Manjaro system. Arch-VFIO just gives you a black screen on boot on Manjaro.