Many ways
1. Use the following command:
# grep -E 'vmx|svm' /proc/cpuinfo flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca \ cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx\ lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est\ tm2 ssse3 cx16 xtpr lahf_lm ida flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca \ cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx\ lm constant_tsc arch_perfmon pebs bts pni monitor ds_cpl vmx est\ tm2 ssse3 cx16 xtpr lahf_lm ida
vmx stands for Virtual Machine eXecution and it refers to Intel CPUs.
svm stands for Secure Virtual Machine and it refers to AMD CPUs.
2 . If you are not sure what to look at or you need confirmation, try the following:
# grep 'model name' /proc/cpuinfo model name : Intel(R) Xeon(R) CPU 5150 @ 2.66GHz model name : Intel(R) Xeon(R) CPU 5150 @ 2.66GHz model name : Intel(R) Xeon(R) CPU 5150 @ 2.66GHz model name : Intel(R) Xeon(R) CPU 5150 @ 2.66GHz
Google the CPU name and check the datasheet from Intel or AMD. Look for VT.
3. Finally you can simply check the BIOS of your server. There should be a section about Advanced Feature or Options and an option that says "Virtualization: disabled". Turn it to enabled if you are planning use that feature.
