Linked by Thom Holwerda on Thu 7th May 2009 18:01 UTC
Windows Windows XP Mode, the virtualisation tool currently in beta for Windows 7, only works on processors with virtualisation extensions, known as AMD-V and Intel VT-x. Microsoft made this clear from the get-go, but still various news websites regurgitated it as "news" yesterday that some Intel processors do not support XPM. Twenty-four hours down the road, and Intel had a few things to say about this.
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RE: Comment by Kroc
by cyclops on Thu 7th May 2009 20:00 UTC in reply to "Comment by Kroc"
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Reasons why XPM only supports VT-capable processors:

* ‘Thinner’ virtualisation. Faster.

* More secure. The VM cannot escape the sandbox

* Less code to write/support back-porting to non VT-capable CPUs

* Business customers only—less diversity to target

* Optional install—use another of the million solutions out there if XPM does not work for you.

In short, Microsoft are keeping things simple (for once). Having to enable VT in the BIOS is a blow though. Thank you BIOS/Mobo OEMs for your 25 year old system that’s been hindering us ever since.

Wow. Hardware virtualisation under hardware is slower under some circumstances than Software. In fact a hybrid solution is considered optimal. I have seen little of its security benefits. As for writing code to backport its interesting that companies who's entire infrastructure like say Sun sorry Oracle can do this, when they do not have the same vested interest in backward *binary* compatibility that Microsoft. As for smaller target of end-users being a good thing...its bizarroworld.

I look forward to Microsoft getting slapped from a Monopolistic and User standpoint. Personally I hope they continue these business decisions.

As for the bios switch comments well I never, as defending Microsoft, After Netscape; Wordperfect; IE6 etc etc them buggers have held back progress for years. Thank goodness we have other OS's with real virtualisation Support

Reply Parent Score: 1

RE[2]: Comment by Kroc
by Kroc on Thu 7th May 2009 20:15 in reply to "RE: Comment by Kroc"
Kroc Member since:

Hardware VT being slower; that's news to me. Always good to learn something new.

I'm not defending Microsoft though, but seeing it from a software development perspective. They probably cobbled this together relatively quickly so the shortest code-path was the best option for them. There's many better ways to run XP in a VM, certainly; I just feel the hoo-ha over XPM's limited support is overblown.

Edited 2009-05-07 20:19 UTC

Reply Parent Score: 1