问题描述
我从此处中了解到vmx功能必须通过为命令提供+ vmx选项来显式启用对QEMU的支持，但问题是它似乎不起作用.在我的系统中，仍未检测到VMX功能.
I read from here that vmx capability support on QEMU must be explicitly enabled by providing the +vmx option to the command but the problem is that it does not seem to work. In my system, the VMX feature is still undetected.
命令:
qemu-system-x86_64 -no-kvm -cpu qemu64,+vmx,-svm ...
在客户操作系统中，当我执行cpuid 1时，我得到ECX = 0x80802001;位5 = 0表示我的虚拟CPU没有VMX.
In my guest OS, when I execute cpuid 1 I get ECX = 0x80802001; bit 5 = 0 meaning that my virtual CPU does not have VMX.
这是一个错误吗?
或者还有另一种在QEMU中启用vmx功能的方法吗?
Or is there another way to enable the vmx feature in QEMU?
推荐答案
以下命令对我有用:
qemu-system-x86_64 -cpu host -kernel kernel/kernel -serial stdio -enable-kvm
-cpu host使QEMU报告VM中的主机CPU功能(因此您的CPU必须支持vmx)
-cpu host makes QEMU report host CPU features inside the VM (so your CPU must support vmx)
-enable-kvm是-cpu host
即使根据此 -cpu qemu64,+vmx应该可以，对我也不起作用.
Even though according to this -cpu qemu64,+vmx should work, it doesn't work for me either.
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