On Wed, Aug 03, 2011 at 12:42:11PM +0200, Jan Kiszka wrote: > >> Why can't Seabios read to true number online CPUs from the PIIX4 device? > >> The information is there already, no need for addition PV here. > >> > > Where is it in PIIX4 device? > > PROC registers (or however they are called). In qemu-kvm, the cpus_sts bitmap array in PIIX4PMState/ACPIGPE has the true number of online CPUS. This is accessed from the DSDT hotplug method in Seabios as "OperationRegion SystemIO" with address 0xaf00. Is this i/o address in the piix4 spec? How can it be accessed from the rest of SeaBIOS? It seems to reside in ACPI_PM space. - Vasilis -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
