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Re: [Qemu-devel] [Xen-devel] [PATCH] Add Xen platform PCI device version

From: Alex Bligh
Subject: Re: [Qemu-devel] [Xen-devel] [PATCH] Add Xen platform PCI device version 2.
Date: Wed, 19 Jun 2013 11:42:06 +0100

--On 19 June 2013 10:13:17 +0000 Paul Durrant <address@hidden> wrote:

We obviously can't say to users "Are you running Windows and are you
running PV drivers >= X.Y, if so set lever A to position B, otherwise if
you are running some other OS or an earlier version of the Windows PV
driver set it to position A".

Why not? The device can be chosen on a per-VM basis.

Not everyone knows what guest some random user will be running
(consider cloud platforms).

Expecting an admin to introspect the guest is not a good plan.
Having the same set of levers that work at least reasonably with
everything is the way to go.

Alex Bligh

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