On 07/04/2015 12:44, Andreas Färber wrote: >> > It can change at runtime, though, if you're using the KVM in-kernel LAPIC. > Got a pointer? A quick git-grep doesn't show anything in hw/ or > kvm-all.c or target-i386/ assigning cpu_index, so it'll always have the > initial value.
Not cpu_index, s->apicbase's MSR_IA32_APICBASE_BSP bit can change with KVM in-kernel LAPIC. It cannot change with QEMU's userspace LAPIC. Because it can change, you have to call apic_designate_bsp for all CPUs and not only on CPU 0. Paolo
