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s390x: Return specification exception for unimplemented diag 308 subcodes 

The architecture specifies specification exceptions for all
unavailable subcodes.

The presence of subcodes is indicated by checking some query subcode.
For example 6 will indicate that 3-6 are available. So future systems
might call new subcodes to check for new features. This should not
trigger a hw error, instead we return the architectured specification
exception.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Cc: qemu-stable@nongnu.org
Message-Id: <20190111113657.66195-3-frankja@linux.ibm.com>
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
stable-4.0
Janosch Frank 2019-01-11 12:36:57 +01:00 committed by Cornelia Huck
parent 0d3a761398
commit 37dbd1f4d4
1 changed files with 1 additions and 1 deletions
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2
target/s390x/diag.c
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@ -130,7 +130,7 @@ out:
}
return;
default:
hw_error("Unhandled diag308 subcode %" PRIx64, subcode);
s390_program_interrupt(env, PGM_SPECIFICATION, ILEN_AUTO, ra);
break;
}
}