diff options
| -rw-r--r-- | hw/s390x/css.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 0f2580d644..91a9fa4f69 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -1672,12 +1672,27 @@ void subch_device_save(SubchDev *s, QEMUFile *f) int subch_device_load(SubchDev *s, QEMUFile *f) { + SubchDev *old_s; + uint16_t old_schid = s->schid; int i; s->cssid = qemu_get_byte(f); s->ssid = qemu_get_byte(f); s->schid = qemu_get_be16(f); s->devno = qemu_get_be16(f); + /* Re-assign subch. */ + if (old_schid != s->schid) { + old_s = channel_subsys.css[s->cssid]->sch_set[s->ssid]->sch[old_schid]; + /* + * (old_s != s) means that some other device has its correct + * subchannel already assigned (in load). + */ + if (old_s == s) { + css_subch_assign(s->cssid, s->ssid, old_schid, s->devno, NULL); + } + /* It's OK to re-assign without a prior de-assign. */ + css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s); + } s->thinint_active = qemu_get_byte(f); /* SCHIB */ /* PMCW */ |