KVM: s390: introduce the format-1 GISA

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The patch modifies the previously defined GISA data structure to be
able to store two GISA formats, format-0 and format-1. Additionally,
it verifies the availability of the GISA format facility and enables
the use of a format-1 GISA in the SIE control block accordingly.

A format-1 can do everything that format-0 can and we will need it
for real HW passthrough. As there are systems with only format-0
we keep both variants.

Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: Pierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Michael Mueller 2017-06-23 13:51:25 +02:00 • committed by Christian Borntraeger

parent 9e73ea7056

commit 4b9f952577

3 changed files with 37 additions and 13 deletions

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44

arch/s390/include/asm/kvm_host.h

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4

arch/s390/kvm/interrupt.c

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2

arch/s390/kvm/kvm-s390.c

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