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Commit 563a1e93 authored by Paul Mackerras's avatar Paul Mackerras Committed by Alexander Graf
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KVM: PPC: Book3S HV: Fix preempted vcore stolen time calculation 



Whenever a vcore state is VCORE_PREEMPT we need to be counting stolen
time for it.  This currently isn't the case when we have a vcore that
no longer has any runnable threads in it but still has a runner task,
so we do an explicit call to kvmppc_core_start_stolen() in that case.

Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 402813fe

arch/powerpc/kvm/book3s_hv.c

+7 −2
Original line number Diff line number Diff line
@@ -2283,9 +2283,14 @@ static void post_guest_process(struct kvmppc_vcore *vc, bool is_master) 
	}

	list_del_init(&vc->preempt_list);

	if (!is_master) {

		vc->vcore_state = vc->runner ? VCORE_PREEMPT : VCORE_INACTIVE;

		if (still_running > 0)

		if (still_running > 0) {

			kvmppc_vcore_preempt(vc);

		} else if (vc->runner) {

			vc->vcore_state = VCORE_PREEMPT;

			kvmppc_core_start_stolen(vc);

		} else {

			vc->vcore_state = VCORE_INACTIVE;

		}

		if (vc->n_runnable > 0 && vc->runner == NULL) {

			/* make sure there's a candidate runner awake */

			vcpu = list_first_entry(&vc->runnable_threads,