KVM: s390: force bp isolation for VSIE

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[ Upstream commit f315104ad8 ]

If the guest runs with bp isolation when doing a SIE instruction,
we must also run the nested guest with bp isolation when emulating
that SIE instruction.
This is done by activating BPBC in the lpar, which acts as an override
for lower level guests.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Christian Borntraeger 2018-04-27 07:36:34 +02:00 • committed by Greg Kroah-Hartman

parent b609eb65f3

commit 1d966a6ade

1 changed files with 20 additions and 0 deletions

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arch/s390/kvm/vsie.c

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