linux-kernel - [PATCH 3.12 119/133] KVM: PPC: Book3S HV: use xics_wake

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Message-Id: <20140204210740.391615581@linuxfoundation.org>
Date:	Tue,  4 Feb 2014 13:08:40 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Andreas Schwab <schwab@...ux-m68k.org>,
	Alexander Graf <agraf@...e.de>
Subject: [PATCH 3.12 119/133] KVM: PPC: Book3S HV: use xics_wake_cpu only when defined

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Andreas Schwab <schwab@...ux-m68k.org>

commit 48eaef0518a565d3852e301c860e1af6a6db5a84 upstream.

Signed-off-by: Andreas Schwab <schwab@...ux-m68k.org>
Signed-off-by: Alexander Graf <agraf@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/powerpc/kvm/book3s_hv.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/arch/powerpc/kvm/book3s_hv.c
+++ b/arch/powerpc/kvm/book3s_hv.c
@@ -82,10 +82,13 @@ void kvmppc_fast_vcpu_kick(struct kvm_vc
 
 	/* CPU points to the first thread of the core */
 	if (cpu != me && cpu >= 0 && cpu < nr_cpu_ids) {
+#ifdef CONFIG_KVM_XICS
 		int real_cpu = cpu + vcpu->arch.ptid;
 		if (paca[real_cpu].kvm_hstate.xics_phys)
 			xics_wake_cpu(real_cpu);
-		else if (cpu_online(cpu))
+		else
+#endif
+		if (cpu_online(cpu))
 			smp_send_reschedule(cpu);
 	}
 	put_cpu();
@@ -1089,7 +1092,9 @@ static void kvmppc_start_thread(struct k
 	smp_wmb();
 #if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP)
 	if (vcpu->arch.ptid) {
+#ifdef CONFIG_KVM_XICS
 		xics_wake_cpu(cpu);
+#endif
 		++vc->n_woken;
 	}
 #endif


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