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xen-devel
Re: [Xen-devel] [PATCH 3/7] xen/hvm: Xen PV extension of HVM initializa
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To: |
Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx> |
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Subject: |
Re: [Xen-devel] [PATCH 3/7] xen/hvm: Xen PV extension of HVM initialization |
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From: |
Ian Campbell <Ian.Campbell@xxxxxxxxxx> |
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Date: |
Thu, 4 Mar 2010 10:18:45 +0000 |
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Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Yaozu \(Eddie\) Dong" <eddie.dong@xxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, Jeremy Fitzhardinge <Jeremy.Fitzhardinge@xxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, Sheng Yang <sheng@xxxxxxxxxxxxxxx> |
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Thu, 04 Mar 2010 02:19:36 -0800 |
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<alpine.DEB.2.00.1003031741080.4648@kaball-desktop> |
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<1267436315-24486-1-git-send-email-sheng@xxxxxxxxxxxxxxx> <1267436315-24486-4-git-send-email-sheng@xxxxxxxxxxxxxxx> <4B8C63B0.2090507@xxxxxxxx> <201003020938.53630.sheng@xxxxxxxxxxxxxxx> <1267521735.11737.23107.camel@xxxxxxxxxxxxxxxxxxxxxx> <4B8D7248.5070807@xxxxxxxx> <alpine.DEB.2.00.1003031132550.4648@kaball-desktop> <4B8E9DD7.6020408@xxxxxxxx> <alpine.DEB.2.00.1003031741080.4648@kaball-desktop> |
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On Wed, 2010-03-03 at 17:41 +0000, Stefano Stabellini wrote:
> On Wed, 3 Mar 2010, Jeremy Fitzhardinge wrote:
> > On 03/03/2010 03:35 AM, Stefano Stabellini wrote:
> > > Give a look at the fourth patch of the series I just posted: it
> > > introduces a simple driver for the Xen PCI platform device to initialize
> > > xenbus and gran table later on when running in a HVM domain, at the same
> > > time leaving the PV case as it is.
> > >
> >
> > Yes, I noticed that. Do the PV drivers cope with having the PCI
> > probe/xenbus setup after their init functions have been called, or do
> > you make sure the PCI probe happens early?
> >
>
> Nope, they seem to cope fine so far.
xenbus_frontend_register is basically just driver_register so it should
be safe to call even before the register_bus(xenbusfoo) call. Things
shouldn't kick off until xen_probe() is called which either happens
explicitly in xenbus_probe_init() or via probe_work which contains a
xenstored_ready check.
Ian.
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