KVM: s390: Sanity check on validity intercept

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This patch adds a sanity check for the content of the guest
prefix register content before faulting in the cpu lowcore
that it refers to. The guest might end up in an endless loop
where SIE complains about missing lowcore with incorrect
content of the prefix register without this fix.

Reported-by: Mijo Safradin <mijo@linux.vnet.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Christian Ehrhardt <ehrhardt@de.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Carsten Otte 2009-05-12 17:21:52 +02:00 • committed by Avi Kivity

parent abf4a71ed9

commit 3edbcff9bf

1 changed files with 18 additions and 10 deletions

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arch/s390/kvm/intercept.c

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