检查是否在不重新启动Linux的情况下激活了VT-x? [英] check if VT-x is activated without having to reboot in Linux?

问题描述

我有一台笔记本电脑，其Intel Core i5 M 450 @ 2.40GHz显然具有VT-x，但没有VT-d.我有32位的Ubuntu 12.04，但想在其上运行基于虚拟的64位基于终端的Linux.我怎么知道BIOS是否已激活此VT-x功能而无需重新启动?

I have a laptop with Intel Core i5 M 450 @ 2.40GHz which apparently has VT-x but not VT-d. I have Ubuntu 12.04 32bit but would like to have a virtual 64bit terminal-based Linux running on it. How do I know if the BIOS has this VT-x feature activated without having to reboot?

推荐答案

您可以使用 msr-tools 中的 rdmsr 读取寄存器 IA32_FEATURE_CONTROL (地址 0x3a ).为此，必须加载内核模块 msr .

You can use rdmsr from msr-tools to read register IA32_FEATURE_CONTROL (address 0x3a). The kernel module msr has to be loaded for this.

在大多数Linux系统上:

On most Linux systems:

sudo modprobe msr
sudo rdmsr 0x3a

值3和5表示已激活.

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