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From: Anthony Liguori <anthony@codemonkey.ws>
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Date: Tue, 02 Jul 2013 13:31:19 -0500
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Subject: Re: [Qemu-devel] [Xen-devel] [PATCH] Citrix PV Bus device [V3]
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To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Paul Durrant <paul.durrant@citrix.com>, qemu-devel@nongnu.org, xen-devel@lists.xen.org

Stefano Stabellini <stefano.stabellini@eu.citrix.com> writes:

> On Tue, 2 Jul 2013, Stefano Stabellini wrote:
>> - the new device should have configurable vendor and device ids, so that
>> host admins can select which vendor's PV drivers are going to be
>> automatically installed on all your Windows guests. This should probably
>> be a VM config option (pvdevice=<gplpv|citrix|suse|oracle|etc>, libxl would
>> then pass a vendor and device id pair to QEMU via command line.
>> We can come up with a config syntax that would support both numeric
>> pairs as well as simple labels.
>
> Anthony,
> would you be happy to have a PCI device in QEMU with configurable vendor
> and device IDs?

We already have this in other places (USB devices, for instance), so
yeah, no problem there.

I will say that having to force a user to choose which "vendor" drivers
they use sucks.  It's ashame that both Xen and KVM suffer this problem
of everyone introducing their own variants of pv drivers.

Regards,

Anthony Liguori

> If not, would you be OK with a PCI device with the Xen vendor ID but a
> configurable device ID?