Linked by Rahul on Sun 9th Nov 2008 10:20 UTC
Red Hat and AMD have just done the so-called impossible, and demonstrated VM live migration across CPU architectures. Not only that, they have demonstrated it across CPU vendors. "If you look at the video here, you will see that they did it. Live migration while streaming HD video isn't all that bad a trick mind you, but doing it between a Barcelona, Shanghai and Intel box is. 36 more of these, and we will be in great shape." Only a few months ago during VMworld, Intel and VMware claimed that this was impossible. Looking at the initial reaction, VMware is quite irked by this accomplishment by Red Hat using KVM technology and they are pointing to stability concerns. Red Hat has been a heavy contributor to KVM and acquired Qumranet, the original developers of KVM a while back.
Permalink for comment 336819
To read all comments associated with this story, please click here.
To read all comments associated with this story, please click here.
Member since:
2005-11-12
So, let me get this straight - you've got a kernel running under one "quad core virtual machine" that was told that each of the virtual CPUs support certain features (e.g. SSE4).
Then you migrate this virtual machine to an old 80486 box, and suddenly 3 cores and all the modern CPU features are gone, and the kernel and all the applications that were relying on these features just keep running?
If you have an app that requires some special instruction set like SSE4 it wouldn't run on the 486 in the first place.