linux-kernel - Re: [PATCH] xen: core dom0 support

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Message-ID: <20090302001412.GL26292@one.firstfloor.org>
Date:	Mon, 2 Mar 2009 01:14:12 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
Cc:	Andi Kleen <andi@...stfloor.org>, Jody Belka <lists-xen@...b.org>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Xen-devel <xen-devel@...ts.xensource.com>,
	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] xen: core dom0 support

> But that suggests the *only* reason to update kernels is to get new 

Wait, it was about Dom0. They could still get all the features 
of the new kernels in a guest DomU.

> While a lot of the delta between 2.6.18 has been hardware support 
> updates, there have been a lot of other useful things: a new CPU 
> scheduler, tickless operation (which directly important for 

The old Dom0s always did no idle tick. And I suspect most
of the other things don't matter very much in a minimal Dom0.

That said I'm not arguing that it shouldn't be merged, but it 
seems like the "old hardware" argument is not very strong.

-Andi
-- 
ak@...ux.intel.com -- Speaking for myself only.
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