Here's a (hopefully) less hackish variant of the fix in <932ad4e2-a10c-77fc-fcb7-5dbbed0d2...@de.ibm.com>. Not really tested (I had problems reproducing the problem on z12, but that might be just me).
Please review & test, if possible. Patch against my s390-next branch (but should fix on top of master as well, I think.) Cornelia Huck (1): s390x: create a compat s390 phb for <=2.10 hw/s390x/s390-virtio-ccw.c | 8 +++++++- include/hw/s390x/s390-virtio-ccw.h | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) -- 2.13.5