QEMU 5 and Legacy IGD passthrough

[tachang]

I was able to build the debian package qemu-server 6.2-4 and install it. However my guess is the changes are really in the pve-qemu since I am starting my VM from the command line to test. To be clear I am using the /usr/bin/qemu-system-x86_64 binary with an option of

-device vfio-pci,host=0000:00:02.0,id=hostdev0,bus=pci.0,addr=0x2,rombar=1,romfile=IntelUHD520.bin,x-igd-opregion=on

Running into issues with cargo now since I need to build libproxmox-backup-qemu0-dev:

dpkg-checkbuilddeps: error: Unmet build dependencies: check libproxmox-backup-qemu0-dev (>= 0.2.0-1)

 

[tom]

I was able to build the debian package qemu-server 6.2-4 and install it.

qemu-server 6.2.4 is already available in our pvetest repository.

 

[Preference]

The full fixes will be included in qemu-server 6.2-4 and pve-qemu-kvm 5.0.0-5, which should hit the pve-no-subscription repository soon. You can build the packages from source as well, if you don't want to wait (see https://git.proxmox.com).

With those packages installed, you can specify "legacy-igd=1" in your <vmid>.conf for the hostpci device to enable the new mode.

How can I see wether or not I have the required fixes included in my version of proxmox? Just freshly downloaded and installed 6.2-4 the other day. Also, where specifically do I set the "legacy-igd=1"? Just on a new line?

 

[tom]

How can I see wether or not I have the required fixes included in my version of proxmox?

you can get your installed packages with:

> pveversion -v

if you update via GUI, you will can click on each package you see the changelog.

for installed packages, just read the changelog via apt, for example the changelog for pve-qemu-kvm via CLI:

> apt changelog pve-qemu-kvm