IGVT-g - Revision history

imported>Whazor: Add note about GVT-g removal and SR-IOV future

2022-12-21T18:58:27Z

Add note about GVT-g removal and SR-IOV future

← Older revision		Revision as of 18:58, 21 December 2022
Line 1:		Line 1:
	Intel GVT-g is a technology that allows to "slice" an Intel GPU into virtualized GPUs that can be then passed into virtual machines.		Intel GVT-g is a technology that allows to "slice" an Intel GPU into virtualized GPUs that can be then passed into virtual machines.

			Note that Intel GVT-g only supports Intel Broadwell (5th gen) to Comet Lake (10th gen), where in 10th gen support for IVGT-g was removed. For 11th gen, and 12th gen, there is SR-IOV coming up for virtualized GPUs, but that did not yet arrive in Linux mainline.

	== Configuring GPU ==		== Configuring GPU ==

imported>Patryk27 at 15:42, 1 February 2022

2022-02-01T15:42:22Z

← Older revision		Revision as of 15:42, 1 February 2022
Line 65:		Line 65:
	</nowiki>}}		</nowiki>}}

	~~Once again, rebuild~~ & ~~reboot, and~~ voilá - your virtualized GPU is ready; now you just have to attach it to some virtual machine.		Rebuild & voilá - your virtualized GPU is ready; now you just have to attach it to some virtual machine.

	== Attaching GPU ==		== Attaching GPU ==

imported>Patryk27 at 15:41, 1 February 2022

2022-02-01T15:41:12Z

← Older revision		Revision as of 15:41, 1 February 2022
Line 39:		Line 39:
	Find some variant that matches your expectations (resolution, memory size etc.), note down its name, generate a random UUID:		Find some variant that matches your expectations (resolution, memory size etc.), note down its name, generate a random UUID:

			# If you're using Nix Flakes:
			$ nix shell nixpkgs#libossp_uuid -c uuid
			a297db4a-f4c2-11e6-90f6-d3b88d6c9525

			# If you're not using Nix Flakes:
	$ nix run nixpkgs.libossp_uuid -c uuid		$ nix run nixpkgs.libossp_uuid -c uuid
	a297db4a-f4c2-11e6-90f6-d3b88d6c9525		a297db4a-f4c2-11e6-90f6-d3b88d6c9525

imported>Patryk27 at 15:36, 1 February 2022

2022-02-01T15:36:56Z

← Older revision		Revision as of 15:36, 1 February 2022
Line 1:		Line 1:
	Intel GVT-g is a ~~full GPU virtualization solution with mediated pass-through which~~ allows ~~host and multiple guests~~ to ~~share same~~ Intel ~~integrated videocard. Guest gets a near-native graphics peformance~~.		Intel GVT-g is a technology that allows to "slice" an Intel GPU into virtualized GPUs that can be then passed into virtual machines.

	~~Win7-32 / Win7-64 / Win8.1-64 /Win10-RS1-64 are validated.~~		== Configuring GPU ==

	~~== Hardware Requirements ==~~		First, enable iGVT-g with:

	~~For client platforms~~, ~~5th~~, ~~6th or 7th Generation IntelÂ® Core Processor Graphics is required~~. ~~For server platforms, E3_v4~~, ~~E3_v5 or E3_v6 Xeon Processor Graphics is required~~.		{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
			virtualisation.kvmgt.enable = true;
			</nowiki>}}
			... then rebuild and reboot.


			After rebooting, check if the driver was successfully loaded:

			$ ls /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/

			... if you get <code>No such file or directory</code>, it means you might be using an older CPU that needs an extra configuration option:

			{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
			boot.extraModprobeConfig = "options i915 enable_guc=2";
			</nowiki>}}
			... then rebuild and reboot once again (unless that previous <code>ls</code> succeeded, in which case you don't have to modify that <code>extraModprobeConfig</code> at all).

	~~== Select VGPU devices ==~~

	~~Enable iGVT-g with {{file\|/etc/nixos/configuration.nix\|nix\|~~<~~nowiki~~>		Now, using <code>ls</code> you can list which variants your Intel GPU is able to virtualise:
	~~virtualisation.kvmgt.enable = true;~~
	</~~nowiki~~>}}
	~~then rebuild and reboot. Choose virtual~~ GPU

	$ ls /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/		$ ls /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/
	i915-GVTg_V5_4/ i915-GVTg_V5_8/		i915-GVTg_V5_4/ i915-GVTg_V5_8/

			E.g.:

	$ cat /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/i915-GVTg_V5_8/description		$ cat /sys/bus/pci/devices/0000:00:02.0/mdev_supported_types/i915-GVTg_V5_8/description
Line 24:		Line 37:
	weight: 2		weight: 2

	~~Generate~~ UUID		Find some variant that matches your expectations (resolution, memory size etc.), note down its name, generate a random UUID:

	$ nix run nixpkgs.libossp_uuid -c uuid		$ nix run nixpkgs.libossp_uuid -c uuid
	a297db4a-f4c2-11e6-90f6-d3b88d6c9525		a297db4a-f4c2-11e6-90f6-d3b88d6c9525

	~~== NixOS~~ configuration ==		... and add that variant's name into your configuration:

	{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>		{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
	virtualisation.kvmgt.enable = true;		virtualisation.kvmgt.enable = true;
	virtualisation.kvmgt.vgpus = {		virtualisation.kvmgt.vgpus = {
	"i915-GVTg_V5_8" = {		"i915-GVTg_V5_8" = {
	uuid = [ "a297db4a-f4c2-11e6-90f6-d3b88d6c9525" ];		uuid = [ "a297db4a-f4c2-11e6-90f6-d3b88d6c9525" ];
	};
	};		};
	environment.systemPackages = with pkgs; [		};

			environment.systemPackages = with pkgs; [
	virtmanager		virtmanager
	];		];
	virtualisation.libvirtd.enable = true;
	users.extraUsers.user.extraGroups = [ "libvirtd" ];		virtualisation.libvirtd.enable = true;
			users.extraUsers.user.extraGroups = [ "libvirtd" ];
	</nowiki>}}		</nowiki>}}

	== ~~Configure KVM~~ ==		Once again, rebuild & reboot, and voilá - your virtualized GPU is ready; now you just have to attach it to some virtual machine.

			== Attaching GPU ==

	=== Bare Qemu ===		=== Bare Qemu ===
Line 56:		Line 73:
	-device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on,xres=1920,yres=1080		-device vfio-pci,sysfsdev=/sys/bus/mdev/devices/'''a297db4a-f4c2-11e6-90f6-d3b88d6c9525''',display=on,x-igd-opregion=on,driver=vfio-pci-nohotplug,ramfb=on,xres=1920,yres=1080

	=== ~~libvirtd~~ ===		=== libvirt ===

	If using virt-manager, create new or open existing VM. Change existing <code><graphics></code> and <code><video></code> sections.		If using virt-manager, create new or open existing VM. Change existing <code><graphics></code> and <code><video></code> sections.

imported>Nh2: uuid is now a list, see https://github.com/NixOS/nixpkgs/commit/180d1d37b28a92cf544a6bdc7834733819be3ad8

2021-03-10T13:44:17Z

uuid is now a list, see https://github.com/NixOS/nixpkgs/commit/180d1d37b28a92cf544a6bdc7834733819be3ad8

← Older revision		Revision as of 13:44, 10 March 2021
Line 35:		Line 35:
	virtualisation.kvmgt.vgpus = {		virtualisation.kvmgt.vgpus = {
	"i915-GVTg_V5_8" = {		"i915-GVTg_V5_8" = {
	uuid = "a297db4a-f4c2-11e6-90f6-d3b88d6c9525";		uuid = [ "a297db4a-f4c2-11e6-90f6-d3b88d6c9525" ];
	};		};
	};		};

imported>Offlinehacker: Add `MESA_LOADER_DRIVER_OVERRIDE` env to command line flags, as it fixes garbled graphic issues

2020-08-18T06:55:36Z

Add `MESA_LOADER_DRIVER_OVERRIDE` env to command line flags, as it fixes garbled graphic issues

← Older revision		Revision as of 06:55, 18 August 2020
Line 89:		Line 89:
	<qemu:arg value='-set'/>		<qemu:arg value='-set'/>
	<qemu:arg value='device.hostdev0.yres=1080'/>		<qemu:arg value='device.hostdev0.yres=1080'/>
			<qemu:env name="MESA_LOADER_DRIVER_OVERRIDE" value="i965"/>
	</qemu:commandline>		</qemu:commandline>
	</domain>		</domain>

imported>User at 09:00, 24 May 2020

2020-05-24T09:00:44Z

← Older revision		Revision as of 09:00, 24 May 2020
Line 97:		Line 97:
	* No video output		* No video output

	** use BIOS (SeaBIOS) machine, EFI (OVMF) is not supported. ~~As a workaround you~~ may [https://~~gist~~.~~githubusercontent~~.~~com~~/~~gnidorah/2951b1f8bebeac899623fd67694ed47b/raw~~/~~99320ab33d30cc28b6813d630b6121e266032c30~~/~~gistfile1.txt create qcow boot image that is capable of booting EFI windows disk on BIOS machine]~~		** use BIOS (SeaBIOS) machine, EFI (OVMF) is not supported. You may use the following workarounds https://wiki.archlinux.org/index.php/Intel_GVT-g#Using_DMA-BUF_with_UEFI/OVMF

	** ensure that the recent Intel graphics driver is installed in the guest		** ensure that the recent Intel graphics driver is installed in the guest

imported>User at 11:22, 1 March 2020

2020-03-01T11:22:09Z

← Older revision		Revision as of 11:22, 1 March 2020
Line 32:		Line 32:

	{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>		{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
	~~boot.kernelPackages = pkgs.linuxPackages_5_4; # xres and yres properties need edid support~~
	virtualisation.kvmgt.enable = true;		virtualisation.kvmgt.enable = true;
	virtualisation.kvmgt.vgpus = {		virtualisation.kvmgt.vgpus = {

imported>User at 09:45, 18 January 2020

2020-01-18T09:45:24Z

← Older revision		Revision as of 09:45, 18 January 2020
Line 32:		Line 32:

	{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>		{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
	boot.kernelPackages = pkgs.linuxPackages_5_4;		boot.kernelPackages = pkgs.linuxPackages_5_4; # xres and yres properties need edid support
	virtualisation.kvmgt.enable = true;		virtualisation.kvmgt.enable = true;
	virtualisation.kvmgt.vgpus = {		virtualisation.kvmgt.vgpus = {

imported>User at 17:25, 15 January 2020

2020-01-15T17:25:19Z

← Older revision		Revision as of 17:25, 15 January 2020
Line 32:		Line 32:

	{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>		{{file\|/etc/nixos/configuration.nix\|nix\|<nowiki>
	boot.kernelPackages = pkgs.~~linuxPackages_5_3~~;		boot.kernelPackages = pkgs.linuxPackages_5_4;
	virtualisation.kvmgt.enable = true;		virtualisation.kvmgt.enable = true;
	virtualisation.kvmgt.vgpus = {		virtualisation.kvmgt.vgpus = {