Re: [Qemu-devel] [PATCH v2 21/21] q35: add acpi-based pci hotplug.

[Michael S. Tsirkin]

On Fri, Oct 12, 2012 at 12:06:44PM +0200, Gerd Hoffmann wrote:
>   Hi,
> 
> >>> I just tried out getting rid of the bridges by default.
> >>
> >> That clearly raises the question which devices should be created
> >> automatically by -M q35.  I think the devices which are part of the ich9
> >> chipset should be there by default.  /me looks at my laptop which
> >> happens to have a ich9 chipset.
> > 
> > The reason this is a bad idea is very simple: we only have a way to add
> > devices not to remove them.  So if you miss a device which your guest
> > needs, it is easy to add, but there is no way to remove.
> 
> Why would you want remove devices?  They don't harm when present.

Yes they do, they increase attack surface on hypervisor.

-- 
MST