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Libvirt script added

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pull/15/head
QaidVoid 3 years ago
parent 21d47763af
commit 207575129d
1 changed files with 193 additions and 30 deletions
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README.md
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@ -1,19 +1,19 @@
### **Enable IOMMU**
#### ***Set the kernel paramater depending on your CPU.***
#### For GRUB user, edit grub configuration.
***Set the kernel paramater depending on your CPU.*** \
For GRUB user, edit grub configuration.
| /etc/default/grub |
| ----- |
| `GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on iommu=pt ..."` |
| `GRUB_CMDLINE_LINUX_DEFAULT="... intel_iommu=on iommu=pt ..."` |
| OR |
| `GRUB_CMDLINE_LINUX_DEFAULT="amd_iommu=on iommu=pt ..."` |
#### ***Generate grub.cfg***
| `GRUB_CMDLINE_LINUX_DEFAULT="... amd_iommu=on iommu=pt ..."` |
***Generate grub.cfg***
```sh
grub-mkconfig -o /boot/grub/grub.cfg
```
#### Reboot your system for the changes to take effect.
Reboot your system for the changes to take effect.
### **Verify IOMMU**
#### ***If you don't see any output when running following command, IOMMU is not functioning.***
***If you don't see any output when running following command, IOMMU is not functioning.***
```sh
dmesg | grep 'IOMMU enabled'
```
@ -61,34 +61,47 @@ dmesg | grep 'IOMMU enabled'
```
</details>
#### Sometimes, you might need to start default network manually.
Sometimes, you might need to start default network manually.
```sh
virsh net-start default
virsh net-autostart default
```
### **Setup Guest OS**
### ***NOTE: You should replace win10 with your VM's name where applicable***
#### ***Download [virtio](https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso) driver.***
#### Launch ***virt-manager*** and create a new virtual machine. Select ***Customize before install*** on Final Step.
#### In ***Overview*** section, set ***Chipset*** to ***Q35***, and ***Firmware*** to ***UEFI***
#### In ***CPUs*** section, set ***CPU model*** to ***host-passthrough***, and ***CPU Topology*** to whatever fits your system.
#### For ***SATA*** disk of VM, set ***Disk Bus*** to ***virtio***.
#### In ***NIC*** section, set ***Device Model*** to ***virtio***
#### Add Hardware > CDROM: virtio-win.iso
#### Now, ***Begin Installation***. Windows can't detect the ***virtio disk***, so you need to ***Load Driver*** and select ***virtio-iso/amd64/win10*** when prompted.
#### After successful installation of Windows, install virtio drivers from virtio CDROM.
***NOTE: You should replace win10 with your VM's name where applicable*** \
Download [virtio](https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso) driver. \
Launch ***virt-manager*** and create a new virtual machine. Select ***Customize before install*** on Final Step. \
In ***Overview*** section, set ***Chipset*** to ***Q35***, and ***Firmware*** to ***UEFI*** \
In ***CPUs*** section, set ***CPU model*** to ***host-passthrough***, and ***CPU Topology*** to whatever fits your system. \
For ***SATA*** disk of VM, set ***Disk Bus*** to ***virtio***. \
In ***NIC*** section, set ***Device Model*** to ***virtio*** \
Add Hardware > CDROM: virtio-win.iso \
Now, ***Begin Installation***. Windows can't detect the ***virtio disk***, so you need to ***Load Driver*** and select ***virtio-iso/amd64/win10*** when prompted. \
After successful installation of Windows, install virtio drivers from virtio CDROM.
### **Attaching PCI devices**
#### Remove Channel Spice, Display Spice, Video XQL, Sound ich* and other unnecessary devices.
#### Now, click on ***Add Hardware***, select ***PCI Devices*** and add the PCI Host devices for your GPU's VGA and HDMI Audio
#### Some GPU vBIOS needs to be patched for UEFI Support.
----- TODO: vBIOS patching ------
#### To use patched vBIOS, edit VM's configuration
```sh
virsh edit win10
```
```xml
Remove Channel Spice, Display Spice, Video XQL, Sound ich* and other unnecessary devices. \
Now, click on ***Add Hardware***, select ***PCI Devices*** and add the PCI Host devices for your GPU's VGA and HDMI Audio \
Some GPU vBIOS needs to be patched for UEFI Support. \
----- TODO: vBIOS patching ------ \
To use patched vBIOS, edit VM's configuration to include patched vBIOS inside ***hostdev*** block of VGA
```sh
mkdir /etc/libvirt/hooks
touch /etc/libvirt/hooks/qemu
chmod +x /etc/libvirt/hooks/qemu
```
<table>
<tr>
<th>
virsh edit win10
</th>
</tr>
<tr>
<td>
```xml
...
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
@ -98,12 +111,162 @@ virsh edit win10
...
</hostdev>
...
```
```
</td>
</tr>
</table>
### Libvirt Hooks
#### TODO
Libvirt hooks automate the process of running specific tasks during VM state change. \
More info at: [PassthroughPost](https://passthroughpo.st/simple-per-vm-libvirt-hooks-with-the-vfio-tools-hook-helper/)
<details>
<summary><b>Create Libvirt Hook</b></summary>
```sh
mkdir /etc/libvirt/hooks
touch /etc/libvirt/hooks/qemu
chmod +x /etc/libvirt/hooks/qemu
```
<table>
<tr>
<th>
/etc/libvirt/hooks/qemu
</th>
</tr>
<tr>
<td>
```sh
#!/bin/bash
GUEST_NAME="$1"
HOOK_NAME="$2"
STATE_NAME="$3"
MISC="${@:4}"
BASEDIR="$(dirname $0)"
HOOKPATH="$BASEDIR/qemu.d/$GUEST_NAME/$HOOK_NAME/$STATE_NAME"
set -e # If a script exits with an error, we should as well.
if [ -f "$HOOKPATH" ]; then
eval \""$HOOKPATH"\" "$@"
elif [ -d "$HOOKPATH" ]; then
while read file; do
eval \""$file"\" "$@"
done <<< "$(find -L "$HOOKPATH" -maxdepth 1 -type f -executable -print;)"
fi
```
</td>
</tr>
</table>
</details>
<details>
<summary><b>Create Start Script</b></summary>
```sh
mkdir -p /etc/libvirt/hooks/qemu.d/win10/prepare/begin
touch /etc/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh
chmod +x /etc/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh
```
<table>
<tr>
<th>
/etc/libvirt/hooks/qemu.d/win10/prepare/begin/start.sh
</th>
</tr>
<tr>
<td>
```sh
#!/bin/bash
set -x
# Stop display manager
systemctl stop display-manager
# rc-service display-manager stop
# Unbind EFI Framebuffer
echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/unbind
# Unload NVIDIA kernel modules
modprobe -r nvidia_drm nvidia_modeset nvidia_uvm nvidia
# Unload AMD kernel module
# modprobe -r amdgpu
# Detach GPU devices from host
# Use your GPU and HDMI Audio PCI host device
virsh nodedev-detach pci_0000_01_00_0
virsh nodedev-detach pci_0000_01_00_1
# Load vfio module
modprobe vfio-pci
```
</td>
</tr>
</table>
</details>
<details>
<summary><b>Create Stop Script</b></summary>
```sh
mkdir -p /etc/libvirt/hooks/qemu.d/win10/release/end
touch /etc/libvirt/hooks/qemu.d/win10/release/end/stop.sh
chmod +x /etc/libvirt/hooks/qemu.d/win10/release/end/stop.sh
```
<table>
<tr>
<th>
/etc/libvirt/hooks/qemu.d/win10/release/end/stop.sh
</th>
</tr>
<tr>
<td>
```sh
#!/bin/bash
set -x
# Unload vfio module
modprobe -r vfio-pci
# Attach GPU devices to host
# Use your GPU and HDMI Audio PCI host device
virsh nodedev-reattach pci_0000_01_00_0
virsh nodedev-reattach pci_0000_01_00_1
# Rebind framebuffer to host
echo "efi-framebuffer.0" > /sys/bus/platform/drivers/efi-framebuffer/bind
# Load NVIDIA kernel modules
modprobe nvidia_drm
modprobe nvidia_modeset
modprobe nvidia_uvm
modprobe nvidia
# Load AMD kernel module
# modprobe amdgpu
# Restart Display Manager
systemctl start display-manager
# rc-service display-manager start
```
</td>
</tr>
</table>
</details>
<b>See Also</b>
### **See Also**
> [Single GPU Passthrough by joeknock90](https://github.com/joeknock90/Single-GPU-Passthrough)<br/>
> [Single GPU Passthrough by YuriAlek](https://gitlab.com/YuriAlek/vfio)<br/>
> [ArchLinux PCI Passthrough](https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF)<br/>

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