On Sun, Oct 13, 2013 at 08:19:16PM +0200, Igor Mammedov wrote:
On Sun, 13 Oct 2013 19:33:19 +0200 Igor Mammedov imammedo@redhat.com wrote:
On Sun, 13 Oct 2013 19:46:09 +0300 "Michael S. Tsirkin" mst@redhat.com wrote:
On Sun, Oct 13, 2013 at 06:23:28PM +0200, Igor Mammedov wrote:
On Sun, 13 Oct 2013 18:59:20 +0300 "Michael S. Tsirkin" mst@redhat.com wrote:
All we care about for a compatible bios is that it keep working in old hardware configurations. IMO there's no real need for old BIOS to work with e.g. memory hotplug - it's reasonable to ask users to update fitmware if they want to use this feature.
Fine with me if we don't care about strange hangs if something misused.
But RamSizeOver4G still doesn't allow correctly place PCI window if large amount of memory present/reserved.
BTW: I don't think it's good practice to change semantics of an old interface in general. It's less confusing to leave old interface as is (obsoleting it eventually) and use a new one.
I agree. The RamSizeOver4G (as passed via three cmos bytes) is ugly - lets not make it more complex. Any new info can be passed via fw_cfg. Indeed, I'd happily accept patches that migrated the existing cmos parameters to new fw_cfg entries.
-Kevin