On 11/29/2017 08:18 PM, Christian Borntraeger wrote: > Works fine under KVM with virtio-blk, but still hangs during boot in an LPAR. > FWIW, the system not only has scsi disks via fcp but also DASDs as a boot disk. > Seems that this is the place where the system stops. (see the sysrq-t output > at the bottom). FWIW, the failing kernel had CONFIG_NR_CPUS=256 and 32 CPUS (with SMT2) == 64 threads with CONFIG_NR_CPUS=16 the system booted fine.
