linux-kernel - Re: [Xen-users] Re: Merge Xen (the hypervisor) into Linux

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Message-ID: <alpine.DEB.2.00.0906040959570.14994@gandalf.stny.rr.com>
Date:	Thu, 4 Jun 2009 10:03:45 -0400 (EDT)
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Florian Manschwetus <florianmanschwetus@....de>
cc:	Theodore Tso <tytso@....edu>,
	George Dunlap <george.dunlap@...citrix.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Ingo Molnar <mingo@...e.hu>,
	David Miller <davem@...emloft.net>,
	"jeremy@...p.org" <jeremy@...p.org>,
	"avi@...hat.com" <avi@...hat.com>,
	"xen-devel@...ts.xensource.com" <xen-devel@...ts.xensource.com>,
	"x86@...nel.org" <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Keir Fraser <Keir.Fraser@...citrix.com>,
	"torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
	"gregkh@...e.de" <gregkh@...e.de>,
	"kurt.hackel@...cle.com" <kurt.hackel@...cle.com>,
	Ian Pratt <Ian.Pratt@...citrix.com>,
	"xen-users@...ts.xensource.com" <xen-users@...ts.xensource.com>,
	ksrinivasan <ksrinivasan@...ell.com>,
	"EAnderson@...ell.com" <EAnderson@...ell.com>,
	"wimcoekaerts@...mekes.net" <wimcoekaerts@...mekes.net>,
	Stephen Spector <stephen.spector@...rix.com>,
	"jens.axboe@...cle.com" <jens.axboe@...cle.com>,
	"npiggin@...e.de" <npiggin@...e.de>
Subject: Re: [Xen-users] Re: Merge Xen (the hypervisor) into Linux


On Thu, 4 Jun 2009, Florian Manschwetus wrote:
> 
> On the other side why use linux as dom0?
> just take a second to mind about OpenSolaris as dom0 (release state would
> close up soon to current state of xen), it gifts you zfs.

Let's turn this around a bit. Can we get Xen to keep a rock solid stable 
ABI?  Where the interface to Xen from Dom0 is never expected to break? All 
old Dom0's will always work on Xen?

Document this interface, and that it will always work. If it is a clean 
interface, then perhaps Linux could work with it. But it would need to be 
non intrusive. I'll have to take some time to look at the Dom0 patches to 
see what exactly it requires. Perhaps there's better ways to accomplish 
what is being asked for.

-- Steve

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