GPU SR-IOV guest configure（显卡虚拟化虚拟机设置）

Linux Guest Configure （Linux 虚拟机设置）

sugesst your guest kernel >= 6.2 ( 建议内核版本 >= 6.2 )
disable secure boot ( 关闭安全启动 )
must use Q35 chip (必须使用q35芯片组)
Disable balloon (关闭内存共享)
Must use OVMF UEFI ( 必须使用UEFI启动 )
Add sriov gpu after install sriov i915 driver (安装驱动以后再添加虚拟显卡)

I will be use debian 12 to do this ( 接下来我用 Debian 12 代号 bookworm 来演示 )

Add backports sources (添加 backports 源)

because debian 12 default kernel 6.1,so need install new kernel (因为debian 12 默认内核版本较低，需要添加backports源，安装较新的内核，我测试的版本 6.4可用)

Plz use mirrors fit your network. I use ustc mirrors!

echo "deb http://mirrors.ustc.edu.cn/debian bookworm-backports main non-free-firmware" >> /etc/apt/sources.list

Update your system 更新你的系统

# apt update

install new kernel 安装新内核

# apt install linux-headers-6.4.0-0.deb12.2-amd64

更新 initramfs

# update-initramfs -u -k all

重启

# reboot

install i915 sriov drivers 接下来打 `i915` 驱动打补丁

git sources 下载源码

cd /usr/src/
git clone https://github.com/strongtz/i915-sriov-dkms i915-sriov-dkms-6.4

edit file 编辑源文件

edit /usr/src/i915-sriov-dkms-6.4/dkms.conf with the following:
PACKAGE_NAME="i915-sriov-dkms"
PACKAGE_VERSION="6.4"

start dkms 开始打补丁

dkms install --force -m i915-sriov-dkms -v 6.1

edit kernel cmdline 编辑内核参数

edit /etc/default/grub with the following:
    GRUB_CMDLINE_LINUX_DEFAULT="quiet i915.enable_guc=3"

update initramfa 更新 initramfs

# update-grub
# update-initramfs -u

poweroff 关机

# poweroff

guest add sriov igpu 虚拟机添加虚拟显卡

boot your guest 启动虚拟机
check 检查是否工作

Running in SR-IOV VF mode 说明已经工作在 sr-iov 模式了！

# dmesg |grep i915
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-6.4.0-0.deb12.2-amd64 root=/dev/mapper/pmc--vg-root ro quiet i915.enable_guc=3
[    0.017516] Kernel command line: BOOT_IMAGE=/vmlinuz-6.4.0-0.deb12.2-amd64 root=/dev/mapper/pmc--vg-root ro quiet i915.enable_guc=3
[    3.279578] i915: loading out-of-tree module taints kernel.
[    3.279625] i915: module verification failed: signature and/or required key missing - tainting kernel
[    3.807172] i915 0000:06:11.0: Running in SR-IOV VF mode
[    3.813391] i915 0000:06:11.0: [drm] GT0: GUC: interface version 0.1.0.0
[    3.823986] i915 0000:06:11.0: [drm] VT-d active for gfx access
[    3.824015] i915 0000:06:11.0: [drm] Using Transparent Hugepages
[    3.828662] i915 0000:06:11.0: [drm] GT0: GUC: interface version 0.1.0.0
[    3.840880] i915 0000:06:11.0: GuC firmware PRELOADED version 1.0 submission:SR-IOV VF
[    3.840886] i915 0000:06:11.0: HuC firmware PRELOADED
[    3.846126] i915 0000:06:11.0: [drm] Protected Xe Path (PXP) protected content support initialized
[    3.846135] i915 0000:06:11.0: [drm] PMU not supported for this GPU.
[    3.846307] [drm] Initialized i915 1.6.0 20201103 for 0000:06:11.0 on minor 1

lspci |grep -i vga

00:01.0 VGA compatible controller: Device 1234:1111 (rev 02)
06:11.0 VGA compatible controller: Intel Corporation Alder Lake-N [UHD Graphics]

done 完成✅

Windows Guest 设置

install win10 guest 正常安装虚拟机
you can add sriov gpu 可以添加虚拟显卡
disable balloon 关闭内存共享
OVMF UEFI boot 必须使用 UEFI 启动
q35 chips 必须使用q35芯片组
SR-IOV GPU could be set primary GPU after install intel gpu drivers 安装驱动以后才能设置成主显卡，注意此时的vnc就不可用了，搞好网络设置和 rdp 再这么干
SR-IOV GPU must set pci-Express 这么做会不会出现 43 bug！这样在windows guest 里面的pci 地址会和host一致，这样不会出错，我试了好久。如果不这么设置会出现43错误，要重新启用显卡才能清除错误！我记得gvt 就不会影响，这个应该是系统的bug！

安装好虚拟机以后，进去设置好远程桌面，装好显卡驱动！就完成了！

After installed windows vm, must set rd desktop or other remote desk, then install new intel gpu driver.

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GPU SR-IOV guest configure（显卡虚拟化 虚拟机设置）