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108 lines
3.3 KiB
Markdown
108 lines
3.3 KiB
Markdown
### **Enable IOMMU**
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#### ***Set the kernel paramater depending on your CPU.***
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#### For GRUB user, edit grub configuration.
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| /etc/default/grub |
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| ----- |
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| `GRUB_CMDLINE_LINUX_DEFAULT="intel_iommu=on iommu=pt ..."` |
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| OR |
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| `GRUB_CMDLINE_LINUX_DEFAULT="amd_iommu=on iommu=pt ..."` |
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#### ***Generate grub.cfg***
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```sh
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grub-mkconfig -o /boot/grub/grub.cfg
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```
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#### Reboot your system for the changes to take effect.
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### **Verify IOMMU**
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#### ***If you don't see any output when running following command, IOMMU is not functioning.***
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```sh
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dmesg | grep 'IOMMU enabled'
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```
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### **Install required tools**
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<details>
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<summary><b>Gentoo Linux</b></summary>
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```sh
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emerge -av qemu virt-manager libvirt ebtables dnsmasq
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```
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</details>
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<details>
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<summary><b>Arch Linux</b></summary>
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```sh
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pacman -S qemu libvirt edk2-ovmf virt-manager dnsmasq ebtables
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```
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</details>
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<details>
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<summary><b>Fedora</b></summary>
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```sh
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dnf install @virtualization
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```
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</details>
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### **Enable required services**
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<details>
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<summary><b>SystemD</b></summary>
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```sh
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systemctl enable --now libvirtd
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```
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</details>
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<details>
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<summary><b>OpenRC</b></summary>
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```sh
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rc-update add libvirtd default
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rc-service libvirtd start
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```
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</details>
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#### Sometimes, you might need to start default network manually.
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```sh
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virsh net-start default
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virsh net-autostart default
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```
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### **Setup Guest OS**
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### ***NOTE: You should replace win10 with your VM's name where applicable***
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#### ***Download [virtio](https://fedorapeople.org/groups/virt/virtio-win/direct-downloads/stable-virtio/virtio-win.iso) driver.***
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#### Launch ***virt-manager*** and create a new virtual machine. Select ***Customize before install*** on Final Step.
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#### In ***Overview*** section, set ***Chipset*** to ***Q35***, and ***Firmware*** to ***UEFI***
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#### In ***CPUs*** section, set ***CPU model*** to ***host-passthrough***, and ***CPU Topology*** to whatever fits your system.
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#### For ***SATA*** disk of VM, set ***Disk Bus*** to ***virtio***.
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#### In ***NIC*** section, set ***Device Model*** to ***virtio***
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#### Add Hardware > CDROM: virtio-win.iso
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#### Now, ***Begin Installation***. Windows can't detect the ***virtio disk***, so you need to ***Load Driver*** and select ***virtio-iso/amd64/win10*** when prompted.
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#### After successful installation of Windows, install virtio drivers from virtio CDROM.
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### **Attaching PCI devices**
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#### Remove Channel Spice, Display Spice, Video XQL, Sound ich* and other unnecessary devices.
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#### Now, click on ***Add Hardware***, select ***PCI Devices*** and add the PCI Host devices for your GPU's VGA and HDMI Audio
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#### Some GPU vBIOS needs to be patched for UEFI Support.
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----- TODO: vBIOS patching ------
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#### To use patched vBIOS, edit VM's configuration
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```sh
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virsh edit win10
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```
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```xml
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...
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<hostdev mode='subsystem' type='pci' managed='yes'>
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<source>
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...
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</source>
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<rom file='/home/me/patched.rom'/>
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...
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</hostdev>
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...
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```
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<b>See Also</b>
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> [Single GPU Passthrough by joeknock90](https://github.com/joeknock90/Single-GPU-Passthrough)<br/>
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> [Single GPU Passthrough by YuriAlek](https://gitlab.com/YuriAlek/vfio)<br/>
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> [ArchLinux PCI Passthrough](https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF)<br/>
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> [Gentoo GPU Passthrough](https://wiki.gentoo.org/wiki/GPU_passthrough_with_libvirt_qemu_kvm)<br/>
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