Commit b8cee18c authored May 21, 2008 by Christian Borntraeger Committed by Avi Kivity Jun 06, 2008

KVM: s390: use yield instead of schedule to implement diag 0x44



diag 0x44 is the common way on s390 to yield the cpu to the hypervisor.
It is called by the guest in cpu_relax and in the spinlock code to
yield to other guest cpus.

This semantic is similar to yield. Lets replace the call to schedule with
yield to make sure that current is really yielding.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

parent 33e3885d

arch/s390/kvm/diag.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -20,7 +20,7 @@ static int __diag_time_slice_end(struct kvm_vcpu *vcpu)
		VCPU_EVENT(vcpu, 5, "%s", "diag time slice end");
		vcpu->stat.diagnose_44++;
		vcpu_put(vcpu);
		schedule();
		yield();
		vcpu_load(vcpu);
		return 0;
		}

Admin message