On Tue, 2009-07-07 at 18:48 +0300, Avi Kivity wrote: > On 07/07/2009 05:17 PM, Alexander Graf wrote: > > I haven't implemented dirty logging yet, but without things are just way too > > slow. So for the time being I hacked in a dummy function that always tells > > userspace we're dirty in VGA regions. > > > > Please don't apply this. This patch is for reference only. > > > > > > ia64 has the same problem; you can deal with this in userspace.
Well... also depending on what we are trying to emulate it might not be worth at all presenting some kind of legacy VGA device. For example, PowerMacs are physically incapable of generating the appropriate cycles on the bus. We are probably better off exposing pseudo PCI graphics device that is reflected by a display node in the device-tree with enough information populated there for offb to be able to pick it up initially, and then have the option of paravirt drivers for accelerating it or making it capable of switching modes etc... That's pretty much what we did with MacOnLinux in fact. Also, MOL kept track of dirtied pages in the fb as well to speed up refresh. Cheers, Ben. -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
