[KVM] Add Desktop gpu-passthrouth config

configs/kvm/libvirt/hooks/kvm.conf

@@ -0,0 +1,9 @@
+# CONFIG
+VM_MEMORY=24576
+
+# VIRSH
+VIRSH_GPU_VIDEO=pci_0000_42_00_0
+VIRSH_GPU_AUDIO=pci_0000_42_00_1
+VIRSH_USB=pci_0000_42_00_2
+VIRSH_SERIAL_BUS=pci_0000_42_00_3
+

configs/kvm/libvirt/hooks/qemu

@@ -0,0 +1,28 @@
+#!/bin/bash
+#
+# Author: Sebastiaan Meijer (sebastiaan@passthroughpo.st)
+#
+
+GUEST_NAME="$1"
+HOOK_NAME="$2"
+STATE_NAME="$3"
+MISC="${@:4}"
+
+BASEDIR="$(dirname $0)"
+
+HOOKPATH="$BASEDIR/qemu.d/$GUEST_NAME/$HOOK_NAME/$STATE_NAME"
+
+set -e # If a script exits with an error, we should as well.
+
+# check if it's a non-empty executable file
+if [ -f "$HOOKPATH" ] && [ -s "$HOOKPATH"] && [ -x "$HOOKPATH" ]; then
+    eval \"$HOOKPATH\" "$@"
+elif [ -d "$HOOKPATH" ]; then
+    while read file; do
+        # check for null string
+        if [ ! -z "$file" ]; then
+          eval \"$file\" "$@"
+        fi
+    done <<< "$(find -L "$HOOKPATH" -maxdepth 1 -type f -executable -print;)"
+fi
+

configs/kvm/libvirt/hooks/qemu.d/win10/prepare/begin/alloc_hugepages.sh

@@ -0,0 +1,29 @@
+#!/bin/bash
+
+## Load the config file
+source "/etc/libvirt/hooks/kvm.conf"
+
+## Calculate number of hugepages to allocate from memory (in MB)
+HUGEPAGES="$(($VM_MEMORY/$(($(grep Hugepagesize /proc/meminfo | awk '{print $2}')/1024))))"
+
+echo "Allocating hugepages..."
+echo $HUGEPAGES > /proc/sys/vm/nr_hugepages
+ALLOC_PAGES=$(cat /proc/sys/vm/nr_hugepages)
+
+TRIES=0
+while (( $ALLOC_PAGES != $HUGEPAGES && $TRIES < 1000 ))
+do
+  echo 1 > /proc/sys/vm/compact_memory            ## defrag ram
+  echo $HUGEPAGES > /proc/sys/vm/nr_hugepages
+  ALLOC_PAGES=$(cat /proc/sys/vm/nr_hugepages)
+  echo "Succesfully allocated $ALLOC_PAGES / $HUGEPAGES"
+  let TRIES+=1
+done
+
+if [ "$ALLOC_PAGES" -ne "$HUGEPAGES" ]
+then
+  echo "Not able to allocate all hugepages. Reverting..."
+  echo 0 > /proc/sys/vm/nr_hugepages
+  exit 1
+fi
+

configs/kvm/libvirt/hooks/qemu.d/win10/prepare/begin/cpu_mode_performance.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+## Enable CPU governor performance mode
+cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
+for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo "performance" > $file; done
+cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
+

configs/kvm/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# Helpful to read output when debugging
+set -x
+
+# Load variables
+source "/etc/libvirt/hooks/kvm.conf"
+
+# Stop display manager
+systemctl stop gdm.service
+
+# Unbind VTconsoles
+echo 0 > /sys/class/vtconsole/vtcon0/bind
+echo 0 > /sys/class/vtconsole/vtcon1/bind
+
+# Unbind EFI-Framebuffer
+echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind
+
+# Avoid a Race condition
+sleep 5
+
+# Unload all Nvidia drivers
+modprobe -r nvidia_drm
+modprobe -r nvidia_modeset
+modprobe -r nvidia_uvm
+modprobe -r nvidia
+
+# Unbind the GPU from display driver
+virsh nodedev-detach $VIRSH_GPU_VIDEO
+virsh nodedev-detach $VIRSH_GPU_AUDIO
+virsh nodedev-detach $VIRSH_USB
+virsh nodedev-detach $VIRSH_SERIAL_BUS
+
+# Load VFIO Kernel Module  
+modprobe vfio-pci 
+

configs/kvm/libvirt/hooks/qemu.d/win10/release/end/cpu_mode_ondemand.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+## Enable CPU governor on-demand mode
+cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
+for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor; do echo "ondemand" > $file; done
+cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
+

configs/kvm/libvirt/hooks/qemu.d/win10/release/end/dealloc_hugepages.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+echo 0 > /proc/sys/vm/nr_hugepages
+

configs/kvm/libvirt/hooks/qemu.d/win10/release/end/stop.sh

@@ -0,0 +1,36 @@
+#!/bin/bash
+set -x
+
+# Load variables
+source "/etc/libvirt/hooks/kvm.conf"
+
+# Unload VFIO-PCI Kernel Driver
+modprobe -r vfio-pci
+modprobe -r vfio_iommu_type1
+modprobe -r vfio
+
+# Re-Bind GPU to Nvidia Driver
+virsh nodedev-reattach $VIRSH_GPU_VIDEO
+virsh nodedev-reattach $VIRSH_GPU_AUDIO
+virsh nodedev-reattach $VIRSH_USB
+virsh nodedev-reattach $VIRSH_SERIAL_BUS
+
+# Rebind VT consoles
+echo 1 > /sys/class/vtconsole/vtcon0/bind
+echo 1 > /sys/class/vtconsole/vtcon1/bind
+
+# Bind EFI-Framebuffer
+nvidia-xconfig --query-gpu-info > /dev/null 2>&1
+echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
+
+# Load all Nvidia drivers
+modprobe nvidia_drm
+modprobe nvidia_modeset
+modprobe drm_kms_helper
+modprobe drm
+modprobe nvidia_uvm
+modprobe nvidia
+
+# Restart Display Manager
+systemctl start gdm.service
+