Date: Tue, 02 Jun 2009 21:58:02 -0700 (PDT)
Message-Id: <20090602.215802.149628704.davem@davemloft.net>
To: dan.magenheimer@oracle.com
Cc: rostedt@goodmis.org, tytso@mit.edu, mingo@elte.hu,
       george.dunlap@eu.citrix.com, jeremy@goop.org, avi@redhat.com,
       xen-devel@lists.xensource.com, x86@kernel.org,
       linux-kernel@vger.kernel.org, Keir.Fraser@eu.citrix.com,
       torvalds@linux-foundation.org, gregkh@suse.de, kurt.hackel@oracle.com,
       Ian.Pratt@eu.citrix.com, xen-users@lists.xensource.com,
       ksrinivasan@novell.com, EAnderson@novell.com, wimcoekaerts@wimmekes.net,
       stephen.spector@citrix.com, jens.axboe@oracle.com, npiggin@suse.de
Subject: Re: Merge Xen (the hypervisor) into Linux
From: David Miller <davem@davemloft.net>
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From: Dan Magenheimer <dan.magenheimer@oracle.com>
Date: Tue, 2 Jun 2009 21:49:58 -0700 (PDT)

> A hypervisor is not an operating system.

This is a pretty bogus statement if you ask me.

A hypervisor a software system that provides seperation between
protection realms.

It also handles exceptions and "system calls" on behalf of the other
protection realms.

I personally don't see the difference at all.  And since many
hypervisors even do cpu scheduling, the fundamental differences
converge to almost nothing.
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