This is a note to let you know that I've just added the patch titled
KVM: PPC: Book3S HV: use xics_wake_cpu only when defined
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
kvm-ppc-book3s-hv-use-xics_wake_cpu-only-when-defined.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 48eaef0518a565d3852e301c860e1af6a6db5a84 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
Date: Mon, 30 Dec 2013 15:36:56 +0100
Subject: KVM: PPC: Book3S HV: use xics_wake_cpu only when defined
From: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
commit 48eaef0518a565d3852e301c860e1af6a6db5a84 upstream.
Signed-off-by: Andreas Schwab <schwab@xxxxxxxxxxxxxx>
Signed-off-by: Alexander Graf <agraf@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
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
Patches currently in stable-queue which might be from schwab@xxxxxxxxxxxxxx are
queue-3.12/kvm-ppc-book3s-hv-use-xics_wake_cpu-only-when-defined.patch
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