On Mon, Aug 31, 2015 at 07:09:34PM +0200, Thomas Huth wrote: > 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
That works well, thanks! Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top
