Commit c7b7de63 authored Feb 15, 2019 by Christian Borntraeger

KVM: s390: Do not yield when target is already running



If the target is already running we do not need to yield.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>

parent 8474e5ca

arch/s390/kvm/diag.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -168,6 +168,10 @@ static int __diag_time_slice_end_directed(struct kvm_vcpu *vcpu)
		if (!tcpu)
		goto no_yield;

		/* target already running */
		if (READ_ONCE(tcpu->cpu) >= 0)
		goto no_yield;

		if (kvm_vcpu_yield_to(tcpu) <= 0)
		goto no_yield;