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[PATCH v2 2/2] css: fix actl handling for unit exceptions

From: Cornelia Huck
Subject: [PATCH v2 2/2] css: fix actl handling for unit exceptions
Date: Mon, 5 Jul 2021 18:39:52 +0200

When a subchannel becomes pending with unit exception, start
pending (and for that matter, halt or clear pending) are not
removed in the actl. Device active and subchannel active,
however, are (due to the subchannel becoming status pending
with primary respectively secondary status).

The other conditions in the actl are only cleared when the
guest executes tsch on the subchannel.

Signed-off-by: Cornelia Huck <cohuck@redhat.com>
 include/hw/s390x/css.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h
index 10ed1df1bb74..75e53816135a 100644
--- a/include/hw/s390x/css.h
+++ b/include/hw/s390x/css.h
@@ -146,7 +146,8 @@ struct SubchDev {
 static inline void sch_gen_unit_exception(SubchDev *sch)
-    sch->curr_status.scsw.ctrl &= ~SCSW_ACTL_START_PEND;
+    sch->curr_status.scsw.ctrl &= ~(SCSW_ACTL_DEVICE_ACTIVE |
+                                    SCSW_ACTL_SUBCH_ACTIVE);
     sch->curr_status.scsw.ctrl |= SCSW_STCTL_PRIMARY |
                                   SCSW_STCTL_SECONDARY |
                                   SCSW_STCTL_ALERT |

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