Skip to main content

Hardware assisted virtualization may change everything!

Server virtualization is a watershed IT technology because it lets a single physical computer run multiple operating systems, vastly increasing rates of CPU use. But server virtualization also is a highly complex process, and many vendors over the years have been stymied in their attempts to create good virtual machine software. VMware, on the other hand, figured out how to build a binary translator that scans the issue of privilege-instructions processors to operating systems and rewrites the ones that can't be virtualized.

Essentially, VMware's early virtualization software tricked the operating system, Gammage says. Earlier processors contain four privilege levels, which create security Relevant Products/Services boundaries -- they're like one-way doors, he says. A process running in Ring 1 had to ask Ring 0 for permission to access objects to which Ring 1 normally wouldn't have access. Under this setup, virtualization software "fools" an operating system into thinking it's running at Ring 0 -- the most privileged ring -- when it's really not.

Hardware-assisted virtualization changes all this by doubling the number of a processor's privilege levels. If the chip Relevant Products/Services has a greater number of privilege levels, modifying the operating system becomes unnecessary, Gammage says.


I think I'll soon write a couple of posts about the future of virtualization and where VMware, Microsoft, Hitachi, IBM, Sun all fit in. This eco-system is evolving heavily, so don't bet on the leading horse, the race has only begun!

Link

Comments

Popular posts from this blog

DeepLearningTrucker Part 1

Avastu Blog is migrating to IdeationCloud.com; 1st Jan 2009 live

YOU DON'T HAVE TO DO ANYTHING. WITHIN 2 SECONDS YOU WILL BE REDIRECTED TO THE NEW HOME OF AVASTU BLOG. PLEASE DO UPDATE AVASTU BLOG'S URL to : http://www.ideationcloud.com on your website.

I will send out emails personally to those who are using my link(s) on their sites.

Thanks much for your co-operation and hope you enjoy the new site and its cool new features :-)




Not like the site is unlive or something..on the contrary, its beginning to get a lot of attention already. Well most of the work is done, you don't have to worry about anything though:

What won't change

Links/Referrals: I will be redirecting the links (all links which you may have cross-posted) to IdeationCloud.com - so you don't have to do anything in all your posts and links. Although, I would urge however that you do change the permalinks, especially on your blogs etc yourselfThis blog is not going away anywhere but within a few months, I will consider discontinuing its usage. I won't obviously do …

Redhot Future Of IT Part I :Marketing yourself as IT professional

I had promised about the "RedHot IT Future Series" and so we discuss here how you should market yourself EFFECTIVELY as an IT professional in this new (and dangerous) web age! Web is the place where you're a hero today and villain tomorrow. While there are lots of professionals who are active on the web, not all are enjoying a good reputation as they got "personal" with others and got into a cockfight. The passive IT professional has nothing to lose but nothing to gain at all!

I know "marketing" might seem as a greasy term but the idea is to have the truth about you out there. You know you're a good person and your family knows that you're really smart person but the rest of the world doesn't!

So the question is how do I market myself on the web as a true "nouveau IT professional". A guy who companies will be tempted to pick up the phone as say "Hey, we wanna talk with you. Can you fly over to Palo Alto (or Guatemala or Johan…