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[6/9] s390x/kvm: unknown DIAGNOSE code should give a specification exception

Message ID 1422455498-889-7-git-send-email-cornelia.huck@de.ibm.com
State New
Headers show

Commit Message

Cornelia Huck Jan. 28, 2015, 2:31 p.m. UTC 
From: Christian Borntraeger <borntraeger@de.ibm.com>

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>
---
 target-s390x/kvm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox

Patch

diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 6bf2719..6f2d5b4 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -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;
     }