[Qemu-devel] [PATCH for-2.7 1/3] s390x/css: copy CCW format bit from ORB to SCSW

[Cornelia Huck]

From: Sascha Silbe <address@hidden>

The CCW Format (F) flag of the Subchannel-Status Word (SCSW) indicates
the format of the CCWs "associated with an I/O operation", i.e. the
value of CCW-Format Control (F) bit of the Operation-Request Block
(ORB).

Copy the CCW format bit from the ORB to the SCSW so we correctly
indicate the format of the CCWs to the guest.

Signed-off-by: Sascha Silbe <address@hidden>
Reviewed-by: Halil Pasic <address@hidden>
Signed-off-by: Cornelia Huck <address@hidden>
---
 hw/s390x/css.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/hw/s390x/css.c b/hw/s390x/css.c
index aa61773..9e98f50 100644
--- a/hw/s390x/css.c
+++ b/hw/s390x/css.c
@@ -524,6 +524,7 @@ static void sch_handle_start_func(SubchDev *sch, ORB *orb)
             return;
         }
         sch->ccw_fmt_1 = !!(orb->ctrl0 & ORB_CTRL0_MASK_FMT);
+        s->flags |= (sch->ccw_fmt_1) ? SCSW_FLAGS_MASK_FMT : 0;
         sch->ccw_no_data_cnt = 0;
         suspend_allowed = !!(orb->ctrl0 & ORB_CTRL0_MASK_SPND);
     } else {
-- 
2.9.1