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# Date Author Comment
b4436a0b 06/25/2013 06:11 pm Cornelia Huck

virtio-ccw: Wire up ioeventfd.

On hosts that support ioeventfd, make use of it for host-to-guest
notifications via diagnose 500.

Signed-off-by: Cornelia Huck <>
8312976e 06/06/2013 11:25 am Cornelia Huck

s390x/css: Fix concurrent sense.

Fix an off-by-one error when indicating availablity of concurrent
sense data.

Cc:
Signed-off-by: Cornelia Huck <>
38dd7cc7 03/08/2013 10:17 pm Christian Borntraeger

s390/css: Fix subchannel detection

We have to consider the m bit to find the real channel subsystem when
determining the last subchannel.

If we fail to take this into account, removal of a subchannel in
the middle of a big list of devices will stop device detection after...
91b0a8f3 02/13/2013 07:56 pm Cornelia Huck

s390: Fix handling of iscs.

There are two ways to express an interruption subclass:
- As a bitmask, as used in cr6.
- As a number, as used in the I/O interruption word.

Unfortunately, we have treated to I/O interruption word as if it
contained the bitmask as well, which went unnoticed so far as...
50c8d9bf 01/29/2013 10:50 pm Cornelia Huck

s390: Use s390_cpu_physical_memory_map for tpi.

Map the I/O interruption code before calling into css.

Signed-off-by: Cornelia Huck <>
Signed-off-by: Alexander Graf <>
8d034a6f 01/29/2013 10:50 pm Cornelia Huck

s390: css error codes.

Changed error codes in the channel subsystem / virtio-ccw code
(-EOPNOTSUPP -> -ENOSYS, -ERESTART -> -EINPROGRESS).

This should hopefully fix building on mingw32.

Signed-off-by: Cornelia Huck <>
Reviewed-by: Stefan Weil <>...
df1fe5bb 01/29/2013 10:50 pm Cornelia Huck

s390: Virtual channel subsystem support.

Provide a mechanism for qemu to provide fully virtual subchannels to
the guest.

Signed-off-by: Cornelia Huck <>
Signed-off-by: Alexander Graf <>