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[PULL,08/20] s390x/kvm: SIGP START is only applicable when STOPPED

Message ID 1425976693-18087-9-git-send-email-borntraeger@de.ibm.com
State New
Headers show

Commit Message

Christian Borntraeger March 10, 2015, 8:38 a.m. UTC 
From: David Hildenbrand <dahi@linux.vnet.ibm.com>

In preparation for other CPU states, SIGP START will only start a VCPU if it is
in the STOPPED state.

Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Message-Id: <1424783731-43426-8-git-send-email-jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
---
 target-s390x/kvm.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/target-s390x/kvm.c b/target-s390x/kvm.c
index 127a3b8..7023513 100644
--- a/target-s390x/kvm.c
+++ b/target-s390x/kvm.c
@@ -1130,6 +1130,11 @@  static void sigp_start(void *arg)
 {
     SigpInfo *si = arg;
 
+    if (s390_cpu_get_state(si->cpu) != CPU_STATE_STOPPED) {
+        si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
+        return;
+    }
+
     s390_cpu_set_state(CPU_STATE_OPERATING, si->cpu);
     si->cc = SIGP_CC_ORDER_CODE_ACCEPTED;
 }