linux-kernel - Re: A proposal

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Message-ID: <Pine.LNX.4.63.0608041541200.18862@qynat.qvtvafvgr.pbz>
Date:	Fri, 4 Aug 2006 15:43:47 -0700 (PDT)
From:	David Lang <dlang@...italinsight.com>
To:	Andi Kleen <ak@...e.de>
cc:	Zachary Amsden <zach@...are.com>,
	Chris Wright <chrisw@...s-sol.org>, Greg KH <greg@...ah.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>,
	Christoph Hellwig <hch@...radead.org>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jack Lo <jlo@...are.com>, virtualization@...ts.osdl.org,
	xen-devel@...ts.xensource.com, James.Bottomley@...eleye.com,
	pazke@...pac.ru
Subject: Re: A proposal - binary

On Sat, 5 Aug 2006, Andi Kleen wrote:

> The problem with VMI is that while it allows hypervisor side evolution
> it doesn't really allow Linux side evolution with its fixed spec.
>
> But having it a bit isolated is probably ok.

actually, wouldn't something like this allow for a one-way evolution (the spec 
can be changed, but the hypervisor side needs to support clients what only talk 
older versions. i.e. the new spec is a superset of the old one (barring major 
security-type problems that require exeptions to the rules))?

David Lang
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