# 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.