当我们要在一台已经安装了操作系统的服务器上部署虚拟化环境，为了确保后面虚拟化安装部署的成功，如何确认当前服务器的CPU是否支持虚拟化呢？ 针对Linux和Windows，下面各自介绍一个查看的方法： 1. Windows平台： 搜索下载小工具：securable 用户需要查看

当我们要在一台已经安装了操作系统的服务器上部署虚拟化环境，为了确保后面虚拟化安装部署的成功，如何确认当前服务器的CPU是否支持虚拟化呢？

针对Linux和Windows，下面各自介绍一个查看的方法：

1. Windows平台：

搜索下载小工具：securable

用户需要查看的也就是截图中的Hardware Virtualization选项。前面3种情况很简单：

NO：CPU不支持

Yes：CPU支持，赶快去将BIOS里的VT开关设为Enabled吧

Locked ON：CPU支持，且BIOS已经打开该功能

Locked OFF：BIOS当前禁用了虚拟化技术，但是不确定CPU本身是否支持。遇上这种情况，先去找找BIOS里面是否有Virtualization Technology并设置为Enabled，然后重新测试，若结果没变，那也还是没用。

2. Linux平台：

在终端执行cat /proc/cpuinfo命令，找到flags部分，如果其中输出有VMX或SVM，即表明支持虚拟化技术。

》如果是Intel CPU：

cat /proc/cpuinfo | grep vmx

》如果是AMD CPU

cat /proc/cpuinfo | grep svm ##(for AMD CPU)

补充说明：Linux显示的flags部分解释如下

fpu – Onboard FPU

vme – Virtual Mode Extensions

de – Debugging Extensions

pse – Page Size Extensions

tsc – Time Stamp Counter

msr – Model-Specific Registers

pae – Physical Address Extensions

mce – Machine Check Architecture

cx8 – CMPXCHG8 instruction

apic – Onboard APIC

sep – SYSENTER/SYSEXIT

mtrr – Memory Type Range Registers

pge – Page Global Enable

mca – Machine Check Architecture

cmov – CMOV instructions (plus FCMOVcc, FCOMI with FPU)

pat – Page Attribute Table

pse36 – 36-bit PSEs

pn – Processor serial number

clflush – CLFLUSH instruction

dts – Debug Store

acpi – ACPI via MSR

mmx – Multimedia Extensions

fxsr – FXSAVE/FXRSTOR, CR4.OSFXSR

sse – SSE

sse2 – SSE2

ss – CPU self snoop

ht – Hyper-Threading

tm – Automatic clock control

ia64 – IA-64 processor

pbe – Pending Break Enable

syscall – SYSCALL/SYSRET

mp – MP Capable

nx – Execute Disable

mmxext – AMD MMX extensions

fxsr_opt – FXSAVE/FXRSTOR optimizations

pdpe1gb – GB pages

rdtscp – RDTSCP

lm – Long Mode (x86-64)

3dnowext – AMD 3DNow! extensions

3dnow – 3DNow!

k8 – Opteron, Athlon64

k7 – Athlon

constant_tsc – TSC ticks at a constant rate

up – smp kernel running on up

pebs – Precise-Event Based Sampling

bts – Branch Trace Store

nonstop_tsc – TSC does not stop in C states

pni – SSE-3

pclmulqdq – PCLMULQDQ instruction

dtes64 – 64-bit Debug Store

monitor – Monitor/Mwait support

ds_cpl – CPL Qual. Debug Store

vmx – Hardware virtualization //intel的虚拟化技术VT技术

smx – Safer mode

est – Enhanced SpeedStep

tm2 – Thermal Monitor 2

ssse3 – Supplemental SSE-3

cid – Context ID

fma – Fused multiply-add

cx16 – CMPXCHG16B

xptr – Send Task Priority Messages

pdcm – Performance Capabilities

dca – Direct Cache Access

sse4_1 – SSE-4.1

sse4_2 – SSE-4.2

x2apic – x2APIC

aes – AES instructions

xsave – XSAVE/XRSTOR/XSETBV/XGETBV

avx – Advanced Vector Extensions

hypervisor – Running on a hypervisor

lahf_lm – LAHF/SAHF in long mode

cmp_legacy – If yes HyperThreading not valid

svm – Secure virtual machine //AMD的虚拟化技术AMD-V

extapic – Extended APIC space

cr8legacy – CR8 in 32-bit mode

abm – Advanced bit manipulation

sse4a – SSE-4A

ibs – Instruction Based Sampling

sse5 – SSE-5

skinit – SKINIT/STGI instructions

wdt – Watchdog timer