On 30/08/15 23:27, Richard W.M. Jones wrote: > On Sun, Aug 30, 2015 at 11:02:17PM +0200, Alexander Graf wrote: >> >> >>> Am 30.08.2015 um 22:11 schrieb Richard W.M. Jones <rjo...@redhat.com>: >>> >>> Hi Alex, >>> >>> Do you or anyone have a working qemu-system-s390x command line I can >>> use as a starting point to boot a [TCG] guest? >>> >>> So far I have tried variations of: >>> >>> ~/d/qemu/s390x-softmmu/qemu-system-s390x -M s390-ccw-virtio -m 1024 -smp 1 >>> -drive file=s390x.img,if=none,id=disk0 -device >>> virtio-blk-ccw,drive=disk0,id=hd0,bootindex=1 -drive >>> file=Fedora-Server-DVD-s390x-22.iso >> >> Ok, 2 problems here. I'm not sure the iso is bootable - you are >> definitely best off to just use -kernel until you have sonething >> working and then move on to booting without. CD boot is something >> real mainframes don't do very often, so it's a pretty unmaintained >> code path in installation media. >> >> The other one is that we emulate most fancy new user level >> instructions of an ec12, but we only advertise ourselves as a z9 to >> the kernel. So you need to make sure that your kernel is compiled >> with support for old CPUs (RHEL7 for example is not). > > Thanks Alex. Stripping this back to the basics: > > ~/d/qemu/s390x-softmmu/qemu-system-s390x -M s390-ccw-virtio -m 1024 -smp 1 > -kernel kernel.img > > with the kernel.img downloaded from > > http://mirrors.nic.cz/fedora-secondary/releases/22/Server/s390x/os/images/ > > just opens a window for a fraction of a second and then qemu exits. > > I'm not married to that particular kernel, nor even to Fedora. I just > want to get something that works as a starting point. Is there a SUSE > or Debian kernel which boots?
Either try http://www.qemu-advent-calendar.org/#day-22 or the following: wget http://ftp.nl.debian.org/debian/dists/Debian8.1/main/installer-s390x/current/images/generic/initrd.debian wget http://ftp.nl.debian.org/debian/dists/Debian8.1/main/installer-s390x/current/images/generic/kernel.debian Then: qemu-system-s390x -M s390-ccw-virtio -kernel kernel.debian -initrd initrd.debian -m 512 -nographic Hope that helps, Thomas
