On Mon, 17 Feb 2014 09:32:35 +0100 Gerd Hoffmann <kra...@redhat.com> wrote:
> On So, 2014-02-16 at 17:53 +0200, Michael S. Tsirkin wrote: > > On Fri, Feb 07, 2014 at 01:51:27PM +0100, Igor Mammedov wrote: > > > Since introduction of PCIHP, it became problematic to > > > punch hole in PCI0._CRS statically since PCI hotplug > > > region size became runtime changeable. > > > > What makes it runtime changeable? > > machine type. q35 / piix map them at different locations. > > Also we might want to this also for devices which are > runtime-configurable (isa-debugcon, pvpanic, ...). I'd convert simple devices that conditionally enabled at startup time, from static definition + patching into completely dynamically generated when device present. For example pvpanic falls in to this category. That would result in smaller ACPI tables guest has to deal with. > > cheers, > Gerd > >
