QEMU GPU vfio-pci pass through

The system I'm using has a Ryzen 5 5600x, and two GPUs:

XFX Radeon RX 580
Sapphire Radeon R9 270X

I installed ArchLinux to use Qemu 9.2.0 and set up GPU passthrough with VFIO. While trying to get the passthrough working, I wanted to use R9 270x with Amiga side. The R9 270x video and audio components were tied up in IOMMU groups with other devices and QEMU didn't like that, so I then implemented ACS write patch to break out each device into its own group (using linux-zen kernel).

I never got it to work, so I swapped to using the RX580 (by changing the vfio ids in the grub line, running mkinitcpio again) and I was able to finally see the Amiga boot on it's own monitor, but now the mouse is frozen in the upper left. I tried the bochs-display to capture mouse events but there was an error ... can't reproduce it now but mouse still frozen. Will next try to pass through a specific mouse device on the command line.

@themamboman

Could you link me the model of yours (the one you are using) XFX Radeon RX 580
on Amazon so I understand how much I have to spend to get it and the exact model.

I recently got the rtx 4060
so I have rtx 2060 aside that I wanted to keep but I can sell it.
And eventually get the XFX Radeon RX 580.

Don't worry I'm not a person attached to money but I would like to understand which is the exact model to buy for qemu.

also I have the version of "Enhancer Software 2.2 for AmigaOS 4.1"
are the drivers included in that package ?

What I would like to use is AmigaOS 4.1 as a system and system acceleration for video and applications in general. (e-uae)
I am not interested in games that part is not important to me.


Thanks.

Today I backed up my system.
I had configured "VSphere" some time ago but I needed a second graphics card to use it and so I did my tests on this.
The discussion is broad and I will not dwell on this.

Also I was using the new:
https://www.techpowerup.com/download/nvidia-dlss-dll/
version (310.2) for DLSS.
( to enable dlss on some games (not multiplayer could lead to a "ban" because it is seen as tampering with the original game )

Now I use an ASUS TUF GAMING B550 with the Ryzen 5800 with the latest updated bios (3611).
I have 2 graphics cards 4060 and 2060

And I was doing some tests with some settings in the bios

PCI Subsystem
4g Decoding ENABLE
Resize BAR ENABLE
SR-IOV Support ENABLE

with these settings enabled in BIOS

4g Decoding ENABLE
Resize BAR ENABLE

the usb stick could not boot for the backup.
I have to see if this also happens with the "mouse".

Setting both to DISABLE the USB stick would boot normally again.

I don't know if you have these settings on your motherboard.

Let me know what card you use as soon as you can also a link on ebay to understand the model to buy.

Thanks.