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Re: [Xen-devel] [PATCH 0 of 5] PV on HVM Xen

To: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 0 of 5] PV on HVM Xen
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Wed, 17 Mar 2010 09:13:00 -0700
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>, Sheng Yang <sheng@xxxxxxxxxxxxxxx>
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On 03/17/2010 08:21 AM, Stefano Stabellini wrote:
As pointed out before by Jeremy and Konrad, the best starting point is
probably Konrad's pv/pcifront-2.6.31 tree: it contains most of the pirq
stuff, ready to be upstreamed.
AFAICT the only things required to make pirq mappings work (as in
my series) that are missing are:

- xen_register_gsi

- xen_setup_pirqs

- the xen_register_gsi hook in acpi_register_gsi

the first two should be easy to port because they don't require any
change but the last one definitely needs modifications in order to be
accepted upstream.

Have a look at 108bfa4b9029bd0f9775319900f82eb9749f5954 and 78c07daac0d9e267b5c23a3e9fbd3c7697f4ef44 in xen/dom0/"new"-interrupt-routing. I think this will be a plausible thing to upstream.

I didn't include MSI support because is not required, but that is
another area that needs changes.

Xiantao has some interesting ideas for this.


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