From: David Hildenbrand <d...@linux.vnet.ibm.com>
In preparation for further code changes (e.g. getting rid of action_flags),
this patch splits the handling of the two sigp orders SIGP STOP and SIGP STOP
AND STORE STATUS by introducing a separate handler function for SIGP STOP AND
STORE STATUS.
Signed-off-by: David Hildenbrand <d...@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.h...@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntrae...@de.ibm.com>
---
arch/s390/kvm/sigp.c | 25 ++++++++++++++++++-------
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/arch/s390/kvm/sigp.c b/arch/s390/kvm/sigp.c
index 1b330d4..f7cd3f7 100644
--- a/arch/s390/kvm/sigp.c
+++ b/arch/s390/kvm/sigp.c
@@ -147,15 +147,27 @@ out:
return rc;
}
-static int __sigp_stop(struct kvm_vcpu *vcpu, struct kvm_vcpu *dst_vcpu,
- int action)
+static int __sigp_stop(struct kvm_vcpu *vcpu, struct kvm_vcpu *dst_vcpu)
{
int rc;
- rc = __inject_sigp_stop(dst_vcpu, action);
+ rc = __inject_sigp_stop(dst_vcpu, ACTION_STOP_ON_STOP);
VCPU_EVENT(vcpu, 4, "sent sigp stop to cpu %x", dst_vcpu->vcpu_id);
- if ((action & ACTION_STORE_ON_STOP) != 0 && rc == -ESHUTDOWN) {
+ return rc;
+}
+
+static int __sigp_stop_and_store_status(struct kvm_vcpu *vcpu,
+ struct kvm_vcpu *dst_vcpu, u64 *reg)
+{
+ int rc;
+
+ rc = __inject_sigp_stop(dst_vcpu, ACTION_STOP_ON_STOP |
+ ACTION_STORE_ON_STOP);
+ VCPU_EVENT(vcpu, 4, "sent sigp stop and store status to cpu %x",
+ dst_vcpu->vcpu_id);
+
+ if (rc == -ESHUTDOWN) {
/* If the CPU has already been stopped, we still have
* to save the status when doing stop-and-store. This
* has to be done after unlocking all spinlocks. */
@@ -347,12 +359,11 @@ static int handle_sigp_dst(struct kvm_vcpu *vcpu, u8
order_code,
break;
case SIGP_STOP:
vcpu->stat.instruction_sigp_stop++;
- rc = __sigp_stop(vcpu, dst_vcpu, ACTION_STOP_ON_STOP);
+ rc = __sigp_stop(vcpu, dst_vcpu);
break;
case SIGP_STOP_AND_STORE_STATUS:
vcpu->stat.instruction_sigp_stop_store_status++;
- rc = __sigp_stop(vcpu, dst_vcpu, ACTION_STORE_ON_STOP |
- ACTION_STOP_ON_STOP);
+ rc = __sigp_stop_and_store_status(vcpu, dst_vcpu, status_reg);
break;
case SIGP_STORE_STATUS_AT_ADDRESS:
vcpu->stat.instruction_sigp_store_status++;
--
1.9.3
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