What exactly do you mean by "unbind"?
Code:
echo "0000:04:00.0" > /sys/bus/pci/drivers/"driver name"/unbind 2>/dev/null
This refers to using a command to remove the driver “driver name” bound to pci “0000:04:00.0”.
A blacklist prevents the driver from being used from the start, whereas a command initially allows the device to operate with the driver. The command is then executed to remove the driver from a specific PCI device afterward.
Therefore, you can remove the driver from a specific device without adding it to the blacklist.
I have been using it for several months with the following settings and have not encountered any problems.
Due to a bug in vfio, the latest kernel is required.
It is not necessary to specify vBIOS. Perhaps it is not a ROM that should be specified.
Specifying disable_idle_d3=1 will cause the problem to worsen.
There will be no problems even if you restart or shut down the virtual machine.
When the virtual machine is stopped, amdgpu is used, but when it is started, vfio-pci is used.
・intel (Please do not include unnecessary options)
sed -i '1s/$/ quiet intel_iommu=on iommu=pt...
0000:04:00.0 and amdgpu according to your environment.
*amdgpu is the driver name.
*The value to be specified can be confirmed using lspci -nnk.
If audio devices require similar processing, you can add that line.
Code:
mkdir -p /var/lib/vz/snippets
nano /var/lib/vz/snippets/gpu_reset.sh
---
#!/bin/bash
phase="$2"
echo "Phase is $phase"
if [ "$phase" == "pre-start" ]; then
echo "0000:04:00.0" > /sys/bus/pci/drivers/amdgpu/unbind 2>/dev/null
sleep 2
echo 8 > /sys/bus/pci/devices/0000:04:00.0/resource2_resize
sleep 2
elif [ "$phase" == "post-stop" ]; then
sleep 5
echo "0000:04:00.0" > /sys/bus/pci/drivers/vfio-pci/unbind 2>/dev/null
sleep 2
echo "0000:04:00.0" > /sys/bus/pci/drivers/amdgpu/bind 2>/dev/null
sleep 2
fi
---
chmod +x /var/lib/vz/snippets/gpu_reset.
qm set VMID -hookscript local:snippets/gpu_reset.sh
All settings added for the following PCI passthrough must be removed.
blacklist XXX
/etc/modprobe.d/vfio.conf
grub kernel parameters
Radeon passthrough works without adding the driver to the blacklist?
I'm running this script on the following hardware:
Radeon RX 9070 XT
Ryzen integrated GPU
Intel integrated GPU
Therefore, I don't think NVIDIA can't do the same thing.
I don't think so, honestly, as I had a Radeon in there until recently
The person who created the script in the first thread, as well as those who posted after the aforementioned thread, are functioning similarly.
