KVM: s390: protvirt: Mask PSW interrupt bits for interception 104 and 112

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We're not allowed to inject interrupts on intercepts that leave the
guest state in an "in-between" state where the next SIE entry will do a
continuation, namely secure instruction interception (104) and secure
prefix interception (112).
As our PSW is just a copy of the real one that will be replaced on the
next exit, we can mask out the interrupt bits in the PSW to make sure
that we do not inject anything.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[borntraeger@de.ibm.com: patch merging, splitting, fixing]
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

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Janosch Frank 2019-12-13 08:26:06 -05:00 • committed by Christian Borntraeger

parent 7c36a3fcf4

commit 3adae0b4ca

1 changed files with 11 additions and 0 deletions

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arch/s390/kvm/kvm-s390.c

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