6 messages in com.xensource.lists.xen-develRe: [Xen-devel] A couple of questions...
FromSent OnAttachments
Eric Benton26 Oct 2006 10:26 
Keir Fraser26 Oct 2006 11:08 
Eric Benton26 Oct 2006 11:30 
Keir Fraser26 Oct 2006 11:34 
Ross Maxfield26 Oct 2006 16:24 
Steven Smith31 Oct 2006 12:47 
Subject:Re: [Xen-devel] A couple of questions about Xen
From:Eric Benton (bent@gmail.com)
Date:10/26/2006 11:30:53 AM
List:com.xensource.lists.xen-devel

Thanks Keir for the fast response!

To implement the PV-on-HVM, have you used a PCI probing in the hypervisor? I don't get how you left the HVM operating system unmodified? Is it a FE/BE model? Does the HVM uses the "old" dom0 FEs?

Thanks again, Eric.

On 10/26/06, Keir Fraser <Keir@cl.cam.ac.uk> wrote:

On 26/10/06 6:27 pm, "Eric Benton" <bent@gmail.com> wrote:

1. Is it possible to share contiguous memory regions between a hvm domain and dom0 using the grant tables? 2. Why do we need the piix bridge in the ioemu? is it being used at all?

1. Yes. The PV-on-HVM drivers do this (from HVM to dom0). Other way (dom0 pages mapped in HVM) will not work as yet. 2. It's used for PCI-ISA IRQ routing. I wondered about removing it but I think I've changed my mind for the time being. If you boot an HVM guest in APIC mode, it will not have the '4 IRQ routers' limitation.

-- Keir