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* s390: Fix handling of iscs.Cornelia Huck2013-02-131-0/+3
| | | | | | | | | | | | | | | | | 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 - (queued-for-next) kvm made the same mistake, and - Linux guest kernels don't check the isc value in the I/O interruption word for subchannel interrupts. Make sure that we treat the I/O interruption word correctly. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* s390: Use s390_cpu_physical_memory_map for tpi.Cornelia Huck2013-01-291-0/+7
| | | | | | | Map the I/O interruption code before calling into css. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* s390: Add channel I/O instructions.Cornelia Huck2013-01-291-0/+16
| | | | | | | Provide handlers for (most) channel I/O instructions. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
* s390: Channel I/O basic definitions.Cornelia Huck2013-01-291-0/+207
Basic channel I/O structures and helper function. Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
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