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Date:	Mon, 2 Mar 2009 01:14:12 +0100
From:	Andi Kleen <>
To:	Jeremy Fitzhardinge <>
Cc:	Andi Kleen <>, Jody Belka <>,
	Nick Piggin <>,
	Xen-devel <>,
	the arch/x86 maintainers <>,
	Linux Kernel Mailing List <>,
	"H. Peter Anvin" <>,
	Andrew Morton <>
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.

-- -- Speaking for myself only.
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