[ltp] What to take care of when buying a Lenovo?

Michael Gaber linux-thinkpad@linux-thinkpad.org
Tue, 11 Mar 2008 11:48:51 +0100


Christoph Lechleitner schrieb:
> gervin23@fastmail.fm schrieb:
>>> I can confirm this experience. My MacMini has such a damn not-64-bit
>>> Core not-2 Duo.
>>>
>>> Unfortunately Intel makes it difficult to distinguish CPUs with or
>>> without EMT64 and with or without the new virtualization extenstion.
>>>
>>> Regards
> 
>> An easy way to determine 64bit or Intel Virtualization Technology (IVT)
>> is to peek at the cpu flags line after issuing "cat /proc/cpuinfo" from
>> the shell. Having 'lm' means you have 64bit while 'vmx' means you have
>> IVT.
> 
> I meant distinguishing based one some computer's marketing description
> like "Intel T1200 CPU", not the "evil honest" /proc/cpuinfo ;->>
> (As ooposed to AMD's consquent integration of "64" in the name of any
> Athlon/Duron based 64bit CPU)
> 
> Btw., my /proc/cpuinfo also tells me ...
> address sizes   : 36 bits physical, 48 bits virtual
>  ... and I have the impression all 64bit CPU+kernel combionations produce
> this line.
> 
> As of vmx resp. IVT, this is yet another feature that is supported by
> the hardware but not by the BIOS or some chipset part, far too often.
> 

since the bios has a switch for VT i think it IS supported by the bios 
^^ at least on my t60

> Regards,
> 
> Christoph