RE: [Xen-devel] VMX status report Nov.29 changset 8090

["Shi, Kuiliang" <kuiliang.shi@xxxxxxxxx>]

Nakajima, Jun wrote:
> Shi, Kuiliang wrote:
>> Keir Fraser wrote:
>>> On 29 Nov 2005, at 15:39, Andrew D. Ball wrote:
>>> 
>>>> Please pardon my ignorance, but what do you mean by IA32E?  x86_64?
>>>> x86 + PAE ?
>>> 
>>> It's Intel's name for 64-bit mode (or long mode, or x86/64, or
>>> whatever you want to call it).
>>> 
>>>   -- Keir
>> 
>> IA32E is x86_64 mode, not x86 + PAE, not IA64. It is a official name
>> in Intel. :)
> 
> IA-32e is the name for an architectural mode; there is no mode like
> x86_64. Since IA-32e mode (added by Intel Extended Memory 64
> Technology) operates in one of two sub-modes, i.e. 64-bit mode or
> compatibility mode, using "64-bit (mode)" is clearer.   
> 
yes, Jun is correct.

EM64T(Extended Memory 64 Technology) have 2 modes, one is leacy IA32
mode and other is IA32E mode.

Thank you, Jun.

>> 
>> Kuiliang
>> 
> 
> 
> Jun
> ---
> Intel Open Source Technology Center

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