From: Alex Williamson <alex.williamson@hp.com>
To: Tristan Gingold <Tristan.Gingold@bull.net>
Cc: xen-devel@lists.xensource.com,
xen-ia64-devel <xen-ia64-devel@lists.xensource.com>
Subject: Re: [Xen-ia64-devel] PCI backend and slot functions
Date: Wed, 02 Aug 2006 08:15:39 -0600 [thread overview]
Message-ID: <1154528139.21726.8.camel@lappy> (raw)
In-Reply-To: <200608021512.04612.Tristan.Gingold@bull.net>
On Wed, 2006-08-02 at 15:12 +0200, Tristan Gingold wrote:
> Hi,
>
> Currently PCI slot functions are not virtualized. When I hide 0000:06:01.1 it
> appears as 0000:00:00.1 and there is no function 0 for the slot. This is an
> issue because on linux/ia64, functions > 0 are not probed if there is no
> function 0.
>
> How is it handled on x86 ?
>
> Should I add an option to virtualize slot functions ?
Yes, I think so. The ia64 PCI discovery appears to more closely
follow the PCI spec. Both multi-function and single-function PCI
devices must have configuration space at function 0. I would guess x86
may probe all functions to deal with old, buggy hardware.
Alex
--
Alex Williamson HP Open Source & Linux Org.
next prev parent reply other threads:[~2006-08-02 14:15 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-02 13:12 PCI backend and slot functions Tristan Gingold
2006-08-02 13:17 ` Chris
2006-08-02 13:42 ` Tristan Gingold
2006-08-02 14:15 ` Alex Williamson [this message]
2006-08-02 14:30 ` [Xen-ia64-devel] " Tristan Gingold
2006-08-02 14:43 ` Alex Williamson
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