我在虚拟机 win10 的 xml 文件中添加了该部分，但出现以下错误：启动域时出错：不支持的配置：主机不支持主机 PCI 设备的直通，尝试启动虚拟机时出现此错误
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 72, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 108, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/object/libvirtobject.py", line 57, in newfn
ret = fn(self, *args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/share/virt-manager/virtManager/object/domain.py", line 1402, in startup
self._backend.create()
File "/usr/lib64/python3.11/site-packages/libvirt.py", line 1362, in create
raise libvirtError('virDomainCreate() failed')
libvirt.libvirtError: unsupported configuration: host doesn't support passthrough of host PCI devices
我发布这篇文章是因为当我执行 virt-host-validate 命令时，我得到了与前面提到的相同的错误 Ubuntu 22 未找到 ACPI DMAR 表，IOMMU 在 BIOS 中被禁用或不受嵌套虚拟机上的硬件平台支持
VT-D 已启用，我们可以在消息中看到
$ sudo dmesg | grep -e DMAR -e IOMMU
[ 0.076108] DMAR: IOMMU enabled
[ 4.063133] AMD-Vi: AMD IOMMUv2 functionality not available on this system
硬件如下
$ lspci
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
00:1c.4 PCI bridge: Intel Corporation 82801 PCI Bridge (rev b5)
00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b5)
00:1c.6 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 7 (rev b5)
00:1c.7 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 8 (rev b5)
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
00:1f.0 ISA bridge: Intel Corporation H67 Express Chipset LPC Controller (rev 05)
00:1f.2 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family Desktop SATA Controller (IDE mode, ports 0-3) (rev 05)
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
00:1f.5 IDE interface: Intel Corporation 6 Series/C200 Series Chipset Family Desktop SATA Controller (IDE mode, ports 4-5) (rev 05)
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Baffin [Radeon RX 550 640SP / RX 560/560X] (rev cf)
01:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Baffin HDMI/DP Audio [Radeon RX 550 640SP / RX 560/560X]
03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 01)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 03)
06:00.0 USB controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 03)
我也在conf中指定了PCI id。硬件肯定很旧，但我真的希望使用直通功能来连接视频适配器。
是否有一天有机会让它工作，或者我应该寻找新的硬件？
