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Re: [Xen-devel] Xen bus drivers and the probe function

To: Michael Abd-El-Malek <mabdelmalek@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xen bus drivers and the probe function
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 02 Oct 2007 06:49:09 +0100
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Bootstrap needs to be initiated by xend, which writes initial rendezvous
information into xenstore. See DevController.py in xend.

 -- Keir

On 2/10/07 06:39, "Michael Abd-El-Malek" <mabdelmalek@xxxxxxx> wrote:

> Hello,
> 
> I'm writing a split driver for XenBus.  My understanding is that this is
> the "Xen way" for inter-domain discovery, bootstrapping the process by
> sharing grants and event channels.
> 
> When I look at the block driver, the probe method of the front- and
> back-ends seems to be doing the bulk of the initialization work.  In my
> sample driver, however, my probe function isn't called.  My module gets
> inserted and the initialization function correctly installs the XenBus
> driver.
> 
> Can someone please explain when the probe function is supposed to be
> called?  If there's no physical device "backing" the virtual device
> (i.e., virtual block driver is a counterexample), should I be relying on
> the probe method in the first place?
> 
> Thanks,
> Mike
> 
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