Hi Eric, On Mon, 10 Jan 2022 15:35:44 +0000, Eric Auger <eric.auger@xxxxxxxxxx> wrote: > > Hi Marc, > > On 1/7/22 5:33 PM, Marc Zyngier wrote: [...] > > @@ -190,7 +191,8 @@ static inline int virt_gicv3_redist_region_count(VirtMachineState *vms) > > > > assert(vms->gic_version == VIRT_GIC_VERSION_3); > > > > - return MACHINE(vms)->smp.cpus > redist0_capacity ? 2 : 1; > > + return (MACHINE(vms)->smp.cpus > redist0_capacity && > > + vms->highmem_redists) ? 2 : 1; > If we fail to use the high redist region, is there any check that the > number of vcpus does not exceed the first redist region capacity. > Did you check that config, does it nicely fail? I did, and it does (example on M1 with KVM): $ /home/maz/vminstall/qemu-hack -m 1G -smp 256 -cpu host -machine virt,accel=kvm,gic-version=3,highmem=on -nographic -drive if=pflash,format=raw,readonly=on,file=/usr/share/AAVMF/AAVMF_CODE.fd qemu-hack: warning: Number of SMP cpus requested (256) exceeds the recommended cpus supported by KVM (8) qemu-hack: warning: Number of hotpluggable cpus requested (256) exceeds the recommended cpus supported by KVM (8) qemu-hack: Capacity of the redist regions(123) is less than number of vcpus(256) Thanks, M. -- Without deviation from the norm, progress is not possible. _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
