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Hyper-V 与 Ubuntu 20.04 Guest 无虚拟化

tag-icon • tag-icon virtualization desktop-environments qemu hyper-v virt-manager
Hyper-V 与 Ubuntu 20.04 Guest 无虚拟化

在 Windows Server 2012 上安装 Hyper-V，并在 BIOS 中启用 VT-x。客户机是 Ubuntu 20.04

lscpu 给出：

Architecture:                    x86_64  
CPU op-mode(s):                  32-bit, 64-bit  
Byte Order:                      Little Endian  
Address sizes:                   42 bits physical, 48 bits virtual  
CPU(s):                          2  
On-line CPU(s) list:             0,1  
Thread(s) per core:              1  
Core(s) per socket:              2  
Socket(s):                       1  
NUMA node(s):                    1
Vendor ID:                       GenuineIntel  
CPU family:                      6  
Model:                           79  
Model name:                      Intel(R) Core(TM) i7-6800K CPU @ 3.40GHz  
Stepping:                        1  
CPU MHz:                         3399.997  
BogoMIPS:                        6799.99  
Hypervisor vendor:               Microsoft  
Virtualization type:             full  
L1d cache:                       64 KiB  
L1i cache:                       64 KiB  
L2 cache:                        512 KiB  
L3 cache:                        30 MiB  
NUMA node0 CPU(s):               0,1  
Vulnerability Itlb multihit:     KVM: Vulnerable  
Vulnerability L1tf:              Mitigation; PTE Inversion  
Vulnerability Mds:               Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown  
Vulnerability Meltdown:          Mitigation; PTI  
Vulnerability Mmio stale data:   Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown  
Vulnerability Spec store bypass: Vulnerable  
Vulnerability Spectre v1:        Mitigation; usercopy/swapgs barriers and __user pointer sanitization  
Vulnerability Spectre v2:        Mitigation; Retpolines, STIBP disabled, RSB filling, PBRSB-eIBRS Not affected  
Vulnerability Srbds:             Not affected  
Vulnerability Tsx async abort:   Vulnerable: Clear CPU buffers attempted, no microcode; SMT Host state unknown  
Flags:                           fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxs  
                                 r sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl cpuid pni pclmulqdq ssse3 fma
                                  cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnow
                                 prefetch pti fsgsbase bmi1 hle avx2 smep bmi2 erms rtm xsaveopt

下载/编译并安装 QEMU 7.1 版后，我在 Desktop Virt-manager 2.2.1 中收到消息“错误主机不支持虚拟化选项”。

我该怎么做才能让 VT-x 嵌套工作？

答案1

经过长时间的搜索，我发现支持嵌套虚拟化的最低 Hyper_V 服务器是 Windows Server 2016 另一个选择是带有支持嵌套虚拟化的 KVM / QEMU 的 Ubuntu 20.04-22.04 两者的主要需求是支持 Intel VT-x vmx 的主板

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