RE: [Xen-users] AMD's VT for chipsets

["Petersson, Mats" <Mats.Petersson@xxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of 
> Mark Weinem
> Sent: 02 October 2006 21:56
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] AMD's VT for chipsets
> 
> Hi Xen-community!
> 
> The german Wikipedia article about "AMD I/O Virtualization 
> Technology" 
> states the following:
> 
> Differently from INTEL, it's planned for 2006 to integrate 
> AMDs                                          
> Virtualization Technology into chipsets, to use the full potential of 
> Virtualization  
> 
>       -> http://de.wikipedia.org/wiki/Pacifica_(Computer)
> 
> What will that mean for practical use?
> Are these mainboards still available? And if not, should we 
> wait for them 
> and buy new hardware components later, maybe in the next 
> year? Does Xen 
> support the chipsets yet? 

I'm not sure if it's part of the translation or some other sort of
misunderstanding, but chipsets (non-processor components) are not
necessary for the AMD-V technology (formerly Pacifica) to operate
correctly. It is available now in Opteron 1xxx, 2xxx and 8xxx;
Athlon64[x2][FX] and Turion X2 processors that have DDR2 memory
controller [it's easiest to tell them apart by that factor - DDR2 was
added to the same generation of processor as the AMD-V feature].
Unfortunately, these processors can not be used in the older
motherboards, due to the DDR2 interface.

I'm not entirely sure what the author considers to be "different from
Intel" - it is a different implementation than Intel's, but with very
similar functionality - there is no difference in functionality in Xen
[aside from wahtever bugs either side is suffering from in the
implementation - as there is some code that isn't shared, the bugs may
be different on either side]. 

--
Mats
> 
> 
> Thanks & kind regards, Mark Weinem
> 
> 
> 
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