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Date:	Tue, 8 Feb 2011 15:55:00 +0100 (CET)
From:	Thomas Gleixner <>
To:	Ian Campbell <>
cc:	Jeremy Fitzhardinge <>,
	LKML <>
Subject: Re: [patch 0/4] XEN: Interrupt cleanups

On Tue, 8 Feb 2011, Ian Campbell wrote:
> On Mon, 2011-02-07 at 13:57 -0800, Jeremy Fitzhardinge wrote:
> > On 02/07/2011 01:33 PM, Thomas Gleixner wrote:
> > > Ok. The irq_chip conversion is mostly mechanical, but I'm really
> > > concerned about that IRQ_SUSPENDED hackery. It'd be nice if you
> > > resp. Ian could give that a test ride. That would allow me to cleanup
> > > stuff in the core code.
> > 
> > Ian notes: "tglx's 4 patch interrupt cleanup series on LKML causes some
> > oddities on PV migration. Will dig further tomorrow..."
> > 
> > So it looks like there's still something amiss.
> The patches missed an indirect use of IRQF_NO_SUSPEND pulled in via
> IRQF_TIMER. The following fixed things for me (probably belongs in your
> patch 4/4).
> With this fixlet PV guest migration works just fine. I also booted the
> entire series as a dom0 kernel and it appeared fine.
> I also tested alongside the cleanup patches Jeremy mentioned before and
> as expected there is no interaction.
> So, with the fixes to 2/4 (irq_move_irq think from yesterday) and 4/4
> (below), the entire series is:
> Acked-by: Ian Campbell <>

Cool. So what's the best way to proceed ? That code is not yet in
linus tree, right ?

So I guess the best way is that I add the core changes to a rc-4 based
branch and you can pull it in and apply the whole xen stuff to your
own tree.

I base my pending patches on top of that so it wont be any problem
when merging the stuff together in next or linus later.


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