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xen-devel
Re: [Xen-devel] [PATCH 7/7] xen: Enable event channel of PV extension of
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To: |
Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH 7/7] xen: Enable event channel of PV extension of HVM |
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From: |
Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx> |
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Date: |
Tue, 9 Mar 2010 10:22:31 +0000 |
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Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Jeremy, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Fitzhardinge <Jeremy.Fitzhardinge@xxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, Konrad, Ingo Molnar <mingo@xxxxxxx>, Wilk <kliw@xxxxxxxxxx>, Sheng Yang <sheng@xxxxxxxxxxxxxxx> |
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Tue, 09 Mar 2010 02:20:47 -0800 |
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<1268032732-8025-1-git-send-email-sheng@xxxxxxxxxxxxxxx> <1268032732-8025-8-git-send-email-sheng@xxxxxxxxxxxxxxx> <alpine.DEB.2.00.1003081701160.16237@kaball-desktop> <201003090953.16985.sheng@xxxxxxxxxxxxxxx> <4B95F224.3060205@xxxxxxxx> <1268128085.11737.59761.camel@xxxxxxxxxxxxxxxxxxxxxx> |
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Alpine 2.00 (DEB 1167 2008-08-23) |
On Tue, 9 Mar 2010, Ian Campbell wrote:
> On Tue, 2010-03-09 at 07:00 +0000, Jeremy Fitzhardinge wrote:
> > On 03/08/2010 05:53 PM, Sheng Yang wrote:
> > > On Tuesday 09 March 2010 01:10:56 Stefano Stabellini wrote:
> > >
> > >> I think that mapping interrupts into VIRQs is a bad idea: you should map
> > >> interrupts into pirqs instead, the code exists already on the kernel
> > >> side so we don't need to do any (ugly) change ther.
> > >>
> > > The code existed in the pv_ops dom0 side, but not in the upstream Linux.
> > > The
> > > latter is our target. We want this work to be accepted by upstream Linux
> > > soon.
>
> > 2. It has significant overlaps with the current xen.git development
> > which is also targeted for upstream. There's no point in creating
> > an unnecessary duplicate mechanism when the infrastructure will be
> > in place anyway.
>
> There's also nothing stopping us from upstreaming portions of the "dom0"
> patchset ahead of full dom0 support if it is useful for some domU
> feature.
>
Indeed.
You just need the pirq mappings and few other things, it shouldn't be
too hard.
At this point I am going to do that myself after this patch series is
completed.
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