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Re: [Xen-devel] Re: [GIT PULL] Xen APIC hooks (with io_apic_ops)

To: Gerd Hoffmann <kraxel@xxxxxxxxxx>
Subject: Re: [Xen-devel] Re: [GIT PULL] Xen APIC hooks (with io_apic_ops)
From: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Date: Wed, 27 May 2009 11:14:30 +0100
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Avi Kivity <avi@xxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Delivery-date: Wed, 27 May 2009 03:14:55 -0700
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On Tue, May 26, 2009 at 10:19 PM, Gerd Hoffmann <kraxel@xxxxxxxxxx> wrote:
> Well.  Xen *does* suffer from bad technical choices made years ago.  I'm
> pretty sure Xen would look radically different when being rewritten from
> scratch today.

That may be.  I don't know enough about the specific issues you raise
below to comment.  But Ingo wasn't bringing up those issues: he was
disagreeing with the whole idea of including dom0 Linux as a key
component of the Xen system.  If the Xen project were to start over
from scratch, we might make a lot of different decisions; but running
Linux as the hypervisor (as KVM does) or forking Linux (as Ingo seemed
to suggest) are not among them.

 -George

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