libvirt hooks

README.md

@@ -28,9 +28,7 @@ However, you may not use this method as it is tedious and having two GPUs allows
 I keep more than one branch for multiple purposes. [There is a personal branch][1] where I have my actual configuration; [a testing branch][2] where I push changes while I am testing new things, it is **NOT stable**; and [a testing-auto branch][3] where I **try** to make everything work automatically.
 
 ## Known problems
-Audio is not supported, yet. I use an external USB DAC.
-
-Performance is not important to me at this moment. There is a lot of things that you can do to get better performance.
+Audio is not configured on this guide, yet. I use an external USB DAC.
 
 MacOS High Sierra does not like USB hubs, therefore anything connected to a hub won't work. Mojave works fine with hubs.
 

scripts/qemu

@@ -0,0 +1,83 @@
+#!/bin/bash
+
+## IOMMU groups
+IOMMU_GPU=06:00.0
+IOMMU_GPU_AUDIO=06:00.1
+IOMMU_USB=07:00.3
+IOMMU_AUDIO=08:00.3
+
+## Virsh devices
+VIRSH_GPU=pci_0000_06_00_0
+VIRSH_GPU_AUDIO=pci_0000_06_00_1
+VIRSH_USB=pci_0000_07_00_3
+VIRSH_AUDIO=pci_0000_08_00_3
+
+## PCI BUS ID
+videoid="10de 1184"
+audioid="10de 0e0a"
+videobusid="0000:${IOMMU_GPU}"
+audiobusid="0000:${IOMMU_GPU_AUDIO}"
+
+## QEMU options
+RAM=12G
+
+## Ulimit
+ULIMIT=$(ulimit -a | grep "max locked memory" | awk '{print $6}')
+ULIMIT_TARGET=$(( $(echo $RAM | tr -d 'G') * 1048576 + 100000 ))
+
+## Log file
+LOG=/tmp/passthrough.log
+
+## Virtual interface name
+VIRTNAME=virt1
+
+if [[ $1 == "win10" ]]; then
+	if [[ $2 == "prepare" ]]; then
+		## Memory lock limit
+		[[ $ULIMIT != $ULIMIT_TARGET ]] && ulimit -l $ULIMIT_TAGET
+
+		## Kill the Window Manager
+		killall i3 > /dev/null 2>&1
+		sleep 5
+
+		## Remove the framebuffer and console
+		echo 0 > /sys/class/vtconsole/vtcon0/bind
+		echo 0 > /sys/class/vtconsole/vtcon1/bind
+		echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind
+
+		## Detach the GPU and USB
+		virsh nodedev-detach $VIRSH_GPU >> $LOG 2>&1
+		virsh nodedev-detach $VIRSH_GPU_AUDIO >> $LOG 2>&1
+		virsh nodedev-detach $VIRSH_USB >> $LOG 2>&1
+
+		## Load vfio
+		modprobe vfio-pci
+
+		## Start the network
+		if [[ $(virsh net-list --all | grep $VIRTNET | awk '{print $2}') != "active" ]]; then
+			virsh net-start $VIRTNET
+		fi
+
+	fi
+	if [[ $2 == 'release' ]]; then
+
+		## Unload vfio module
+		modprobe -r vfio-pci
+		modprobe -r vfio_iommu_type1
+		modprobe -r vfio
+
+		## Reattach the GPU and USB
+		virsh nodedev-reattach $VIRSH_USB >> $LOG 2>&1
+		virsh nodedev-reattach $VIRSH_GPU_AUDIO >> $LOG 2>&1
+		virsh nodedev-reattach $VIRSH_GPU >> $LOG 2>&1
+
+		## Reload the framebuffer and console
+		echo 1 > /sys/class/vtconsole/vtcon0/bind
+		nvidia-xconfig --query-gpu-info > /dev/null 2>&1
+		echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
+
+		## Restore ulimit
+		ulimit -l $ULIMIT
+
+	fi
+fi