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KVM: s390: sigp: split handling of SIGP STOP (AND STORE STATUS)

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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 <dahi@linux.vnet.ibm.com>
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
David Hildenbrand 2014-06-06 10:25:09 +02:00 committed by Christian Borntraeger
parent 07b0303540
commit a6cc310856
1 changed files with 18 additions and 7 deletions
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25
arch/s390/kvm/sigp.c
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@ -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++;