Denis Denisov denji

Ubuntu 21.04 VM with GPU acceleration under Hyper-V...?

Modern versions of Windows support GPU paravirtualization in Hyper-V with normal consumer graphics cards. This is used e.g. for graphics acceleration in Windows Sandbox, as well as WSLg. In some cases, it may be useful to create a normal VM with GPU acceleration using this feature, but this is not officially supported. People already figured out how to do it with Windows guests though, so why not do the same with Linux? It should be easy given that WSLg is open source and reasonably well documented, right?

Well... not quite. I managed to get it to run... but not well.

How to do it?

Verify driver support

ELF Format Cheatsheet

Introduction

Executable and Linkable Format (ELF), is the default binary format on Linux-based systems.

Compilation

What's Cool

Encrypted root partition
- AES-256 bit cipher
- Argon2id variant for PBKDF
- Sha3-512 bit hash
rEFInd bootloader
- With dreary theme
- Optimal Settings (optimized for aesthetics, and boot time)
Boot into backups thanks to refind-btrfs

	// =============================================================================
	// XNU kperf/kpc demo
	// Available for 64-bit Intel/Apple Silicon, macOS/iOS, with root privileges
	//
	//
	// Demo 1 (profile a function in current thread):
	// 1. Open directory '/usr/share/kpep/', find your CPU PMC database.
	// M1 (Pro/Max/Ultra): /usr/share/kpep/a14.plist
	// M2 (Pro/Max): /usr/share/kpep/a15.plist
	// M3: /usr/share/kpep/as1.plist

	#!/bin/bash

	# Cores reserved for the host machine
	# Must include QEMU IO/Emulation cores if configured
	# Ex: 1st Core -> reserved=0
	# Ex: 1st & 2nt Cores -> reserved=0,1
	# Ex: 1st Physical Core (16 Virtual Cores) -> reserved=0,8
	reserved=0,8

	# Host core range numbered from 0 to core count - 1

	#!/bin/sh

	# The chip info can be found via sensors-detect in lm_sensors
	# Driver `to-be-written':
	# * ISA bus, address 0xa40
	# Chip `ITE IT8686E Super IO Sensors' (confidence: 9)

	# Driver `it87':
	# * ISA bus, address 0xa60
	# Chip `ITE IT8792E Super IO Sensors' (confidence: 9)

	/-- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
	│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
	╞══════════════════════════════════════════════════════════════════════════════╡
	│ Copyright 2020 Justine Alexandra Roberts Tunney │
	│ │
	│ Permission to use, copy, modify, and/or distribute this software for │
	│ any purpose with or without fee is hereby granted, provided that the │
	│ above copyright notice and this permission notice appear in all copies. │
	│ │
	│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │

	#!/usr/bin/env bash

	# 1. Download and install the QEMU hook helper from here: https://github.com/PassthroughPOST/VFIO-Tools
	# 2. Place this file in /etc/libvirt/hooks/qemu.d/NAME OF YOUR VM/prepare/begin/disable-fb.sh
	# 3. Make disable-fb.sh executable.

	VM_NAME="$1"
	echo "libvirt-qemu disable-fb: Disabling efi-framebuffer to prepare to pass GPU to VM $VM_NAME" > /dev/kmsg 2>&1
	echo "efi-framebuffer.0" > /sys/bus/platform/devices/efi-framebuffer.0/driver/unbind

	/-- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
	│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
	╞══════════════════════════════════════════════════════════════════════════════╡
	│ Copyright 2020 Justine Alexandra Roberts Tunney │
	│ │
	│ Permission to use, copy, modify, and/or distribute this software for │
	│ any purpose with or without fee is hereby granted, provided that the │
	│ above copyright notice and this permission notice appear in all copies. │
	│ │
	│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │

	#!/bin/bash
	# Get a list of GPUs in a system
	#
	# Useful nvidia-smi Queries
	# https://nvidia.custhelp.com/app/answers/detail/a_id/3751/~/useful-nvidia-smi-queries

	# Get GPU names as a bach array, replace spaces with underscores
	gpu_names=($(nvidia-smi --query-gpu=gpu_name --format=csv,noheader \| tr -s ' ' '_'))

	for name in "${gpu_names[@]}"