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s390x/kvm: unknown DIAGNOSE code should give a specification exception

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As described in CP programming services an unimplemented DIAGNOSE
function should return a specification exception. Today we give the
guest an operation exception.
As both exception types are suppressing and Linux as a guest does not
care about the type of program check in its exception table handler
as long as both types have the same kind of error handling (nullifying,
terminating, suppressing etc.) this was unnoticed.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
This commit is contained in:
Christian Borntraeger 2014-12-18 10:04:17 +01:00 committed by Cornelia Huck
parent 20dd25bb67
commit 68540b1a1b
1 changed files with 1 additions and 1 deletions
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target-s390x/kvm.c
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@ -1091,7 +1091,7 @@ static int handle_diag(S390CPU *cpu, struct kvm_run *run, uint32_t ipb)
break;
default:
DPRINTF("KVM: unknown DIAG: 0x%x\n", func_code);
r = -1;
enter_pgmcheck(cpu, PGM_SPECIFICATION);
break;
}