[ale] Taking the plunge

Brian Pitts brian at polibyte.com
Wed Aug 15 16:34:00 EDT 2007


Paul Cartwright wrote:
> On Wednesday 15 August 2007 04:19:42 pm John Wells wrote:
>> Xen won't virtualize Windows without the virtualization support (AMD-V or
>> Intel VT) in your CPU. To tell if you can, do
>>
>> $ egrep '^flags.*(vmx|svm)' /proc/cpuinfo
> 
>    egrep '^flags.*(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 pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
> 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 pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
> 
> so, what does this tell me??

This tells you that you have Intel VT support and can use Xen or KVM to 
run Windows. I believe VMWare and VirtualBox will utilize VT if it's 
present, but they don't require it.

Note that even though it's reported in /proc/cpuinfo, you may still need 
to turn on VT in your BIOS.

-Brian



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