RE: [Xen-devel] disable qemu PCI devices in HVM domains

["James Harper" <james.harper@xxxxxxxxxxxxxxxx>]

> On 13/12/2008 10:05, "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
wrote:
> 
> > Citrix use fixed ports for logging. The problem with using
> > xen-platform-pci's ioport range is that I can only get to them once
the
> > windows pci bus driver has enumerated all the devices, and it's too
late
> > by then as Windows has already enumerated PDO's for all the devices.
The
> > only way around this would be to send an 'unplug' event to xen to
remove
> > the PCI devices, but is the standard PCI bus emulated by qemu
hotplug
> > capable? And would windows even cope with a hotplug event that early
in
> > the boot process?
> 
> Does Windows remap the BAR?

I don't know.

> If not you can go probe the PCI space yourself?
> It's really easy to do.

Is it just a matter of probing a few ioports? Doing so would be 'against
the rules' as far as Windows is concerned, although it would work.

James


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