CPU支持虚拟化？如何查看cpu是否支持虚拟化
时间:2014-07-01 14:17 来源:linux.it.net.cn 作者:IT网
如何查看cpu是否支持虚拟化
一、Windows平台：
使用小工具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。
二、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。
复制代码代码示例:
cat /proc/cpuinfo | grep vmx ##(for Intel CPU)
or
cat /proc/cpuinfo | grep svm ##（for AMD CPU）
三、Linux显示的flags部分解释：
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
(责任编辑：IT)
如何查看cpu是否支持虚拟化
一、Windows平台：
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：
二、Linux平台：
复制代码代码示例:
cat /proc/cpuinfo | grep vmx ##(for Intel CPU)
or cat /proc/cpuinfo | grep svm ##（for AMD CPU）
三、Linux显示的flags部分解释：
fpu – Onboard FPU
(责任编辑：IT)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 |