KVM显卡GPU直通配置指南

sudo passwd

sudo apt install qemu-kvm qemu-utils libvirt-daemon-system libvirt-clients bridge-utils virt-manager ovmf

sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER

sudo systemctl restart libvirtd.service
reboot

sudo gedit /etc/modules

reboot

lspci -nnk | grep NVIDIA

lspci -nnk | grep AMD

lspci -vv -s 01:00.0 | grep driver  # 查看01:00.0的驱动
lspci -vv -s 01:00.1 | grep driver  # 查看01:00.1的驱动（通常是音频设备）

find /sys/kernel/iommu_groups/ -type l

sudo gedit /etc/modprobe.d/blacklist.conf

reboot

sudo dmesg | grep -e DMAR -e IOMMU

lspci -nn | grep NVIDIA  # NVIDIA显卡
# 或
lspci -nn | grep AMD      # AMD显卡

sudo gedit /etc/default/grub

sudo update-grub
reboot

# 安装SSH服务器
sudo apt-get install openssh-server
# 启动SSH服务
sudo service ssh start
# 安装网络工具包
sudo apt-get install net-tools
# 查看网络接口和IP地址
ifconfig

# 安装KVM相关软件包
sudo apt install qemu-kvm qemu-utils libvirt-daemon-system libvirt-clients bridge-utils virt-manager ovmf

# 添加用户到libvirt和kvm组
sudo usermod -aG libvirt $USER
sudo usermod -aG kvm $USER

# 编辑modules配置
sudo gedit /etc/modules
# 内容：
# softdep snd_hda_intel pre:vfio vfio_pci
# softdep amdgpu pre:vfio vfio_pci 
# vfio
# vfio_iommu_type1
# vfio_virqfd

# 编辑GRUB配置
sudo gedit /etc/default/grub
# 添加：intel_iommu=on iommu=pt
sudo update-grub

# 创建VFIO配置文件
sudo gedit /etc/modprobe.d/vfio.conf
# 内容：
# options vfio-pci ids=1002:67ff,1002:aae0（根据你的显卡ID修改）
# options vfio-pci disable_idle_d3=1
# options vfio-pci disable_vga=1

# 打开文件管理器
nautilus

# 查看服务文件
file /etc/systemd/system/display-manager.service

# 设置钩子脚本权限
sudo chmod +x /etc/libvirt/hooks/*

# 创建符号链接
sudo ln -s /etc/libvirt/hooks/vfio-startup.sh /bin/vfio-startup.sh
sudo ln -s /etc/libvirt/hooks/vfio-teardown.sh /bin/vfio-teardown.sh

# 创建防止系统休眠的服务
sudo nano /etc/systemd/system/libvirt-nosleep@.service
# 内容：
# [Unit]
# Description=Preventing sleep while libvirt domain "%i" is running
#
# [Service]
# Type=simple
# ExecStart=/usr/bin/systemd-inhibit --what=sleep --why="Libvirt domain \"%i\" is running" --who=%U --mode=block sleep infinity

# 设置服务文件权限
sudo chmod 644 -R /etc/systemd/system/libvirt-nosleep@.service
sudo chown root:root /etc/systemd/system/libvirt-nosleep@.service

# 编辑libvirt配置
sudo gedit /etc/libvirt/libvirtd.conf
# 更改：
# unix_sock_group = "libvirt"
# unix_sock_rw_perms = "0770"

# 编辑QEMU配置
sudo gedit /etc/libvirt/qemu.conf
# 注释：
# #user = "root"
# #group = "root"
# 添加：
# group = "libvirt"

# 添加用户到libvirt组
sudo usermod -a -G libvirt $USER

# 查看IOMMU是否启用
sudo dmesg | grep iommu

# 查看NVIDIA显卡
lspci -nn | grep NVIDIA

# 安装JSON库
sudo apt-get install libjsoncpp-dev

#!/bin/bash

useColors=true
usePager=true

usage() {
	echo "\
Usage: $(basename $0) [OPTIONS]
Shows information about IOMMU groups relevant for working with PCI-passthrough

  -c -C 	enables/disables colored output, respectively
  -p -P 	enables/disables pager (less), respectively

  -h 		display this help message"
}

color() {
	if ! $useColors; then
		cat
		return
	fi

	rset=$'\E[0m'
	case "$1" in
		black) colr=$'\E[22;30m' ;;
		red) colr=$'\E[22;31m' ;;
		green) colr=$'\E[22;32m' ;;
		yellow) colr=$'\E[22;33m' ;;
		blue) colr=$'\E[22;34m' ;;
		magenta) colr=$'\E[22;35m' ;;
		cyan) colr=$'\E[22;36m' ;;
		white) colr=$'\E[22;37m' ;;
		intenseBlack) colr=$'\E[01;30m' ;;
		intenseRed) colr=$'\E[01;31m' ;;
		intenseGreen) colr=$'\E[01;32m' ;;
		intenseYellow) colr=$'\E[01;33m' ;;
		intenseBlue) colr=$'\E[01;34m' ;;
		intenseMagenta) colr=$'\E[01;35m' ;;
		intenseCyan) colr=$'\E[01;36m' ;;
		intenseWhite) colr=$'\E[01;37m' ;;
	esac

	sed "s/^/$colr/;s/\$/$rset/"
}

indent() {
	sed 's/^/\t/'
}

pager() {
	if $usePager; then
		less -SR
	else
		cat
	fi
}

while getopts cCpPh opt; do
	case $opt in
		c)
			useColors=true
			;;
		C)
			useColors=false
			;;
		p)
			usePager=true
			;;
		P)
			usePager=false
			;;
		h)
			usage
			exit
			;;
	esac
done

iommuGroups=$(find '/sys/kernel/iommu_groups/' -maxdepth 1 -mindepth 1 -type d)

if [ -z "$iommuGroups" ]; then
	echo "No IOMMU groups found. Are you sure IOMMU is enabled?"
	exit
fi

for iommuGroup in $iommuGroups; do
	echo "IOMMU group $(basename "$iommuGroup")" | color red

	for device in $(ls -1 "$iommuGroup/devices/"); do
		devicePath="$iommuGroup/devices/$device/"

		# Print pci device
		lspci -nns "$device" | color blue

		# Print drivers
		driverPath=$(readlink "$devicePath/driver")
		if [ -z "$driverPath" ]; then
			echo "Driver: none"
		else
			echo "Driver: $(basename $driverPath)"
		fi | indent | color cyan

		# Print usb devices
		usbBuses=$(find $devicePath -maxdepth 2 -path '*usb*/busnum')
		for usb in $usbBuses; do
			echo 'Usb bus:' | color cyan
			lsusb -s $(cat "$usb"): | indent | color green
		done | indent

		# Print block devices
		blockDevices=$(find $devicePath -mindepth 5 -maxdepth 5 -name 'block')
		for blockDevice in $blockDevices; do
			echo 'Block device:' | color cyan
			echo "Model: $(cat "$blockDevice/../model")" | indent | color green
			lsblk -no NAME,SIZE,MOUNTPOINT "/dev/$(ls -1 $blockDevice)" | indent | color green
		done | indent
	done | indent
done | pager

#!/bin/bash
set -x

sleep 10

modprobe -r vfio_pci
modprobe -r vfio
modprobe -r vfio_iommu_type1
modprobe -r vfio_virqfd

virsh nodedev-reattach pci_0000_01_00_0
virsh nodedev-reattach pci_0000_01_00_1
echo 1 > /etc/class/vtconsole/vtcon0/bind
echo 1 > /etc/class/vtconsole/vtcon1/bind

echo efi-framebuffer.0 > /sys/bus/platform/drivers/efi-framebuffer/bind

modprobe nvidia
modprobe nvidia_modeset
modprobe nvidia_uvm
modprobe nvidia_drm
modprobe drm_kms_helper
modprobe i2c_nvidia_gpu
modprobe drm

sleep 10

systemctl start gdm3