linux – 在BIOS中启用VT但KVM无法检测到

发布时间：2020-12-14 02:43:35 所属栏目：Linux 来源：网络整理

导读：我有戴尔OPTIPLEX 755机器,在B IOS中启用了VT但是当我尝试使用KVM检查时,我收到以下错误我错过了什么？ root@nova-controller:~# kvm-okINFO: /dev/kvm does not existHINT: sudo modprobe kvm_intelINFO: Your CPU supports KVM extensionsINFO: KVM (vmx)

我有戴尔OPTIPLEX 755机器,在B IOS中启用了VT但是当我尝试使用KVM检查时,我收到以下错误

我错过了什么？

root@nova-controller:~# kvm-ok
INFO: /dev/kvm does not exist
HINT:   sudo modprobe kvm_intel
INFO: Your CPU supports KVM extensions
INFO: KVM (vmx) is disabled by your BIOS
HINT: Enter your BIOS setup and enable Virtualization Technology (VT),and then hard poweroff/poweron your system
KVM acceleration can NOT be used
root@nova-controller:~#

更新：

root@nova-controller:~# sudo modprobe kvm_intel
FATAL: Error inserting kvm_intel (/lib/modules/3.2.0-26-generic/kernel/arch/x86/kvm/kvm-intel.ko): Operation not supported

dmesg的

[   57.887352] kvm: disable TXT in the BIOS or activate TXT before enabling KVM
[   57.887354] kvm: disabled by bios
[   61.199353] kvm: disable TXT in the BIOS or activate TXT before enabling KVM
[   61.199355] kvm: disabled by bios
[  965.566334] kvm: disable TXT in the BIOS or activate TXT before enabling KVM
[  965.566337] kvm: disabled by bios

解决方法

在BIOS you should have中进行以下设置：

>安全性：Execute Disable应为On
>性能：虚拟化应该开启
>性能：直接I / O访问的VT应为On
>性能：可信执行应该关闭

更改这些并保存设置后,请关闭计算机并重新打开电源.

（编辑：李大同）

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