[3.11.y.z extended stable] Patch "KVM: ARM: vgic: Fix sgi dispatch problem" has been added to staging queue

Luis Henriques luis.henriques at canonical.com
Wed May 7 11:08:55 UTC 2014

This is a note to let you know that I have just added a patch titled

    KVM: ARM: vgic: Fix sgi dispatch problem

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:


If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see



>From 7a6f22365c0982a3192b1764807433fdc9f425d2 Mon Sep 17 00:00:00 2001
From: Haibin Wang <wanghaibin.wang at huawei.com>
Date: Thu, 10 Apr 2014 13:14:32 +0100
Subject: KVM: ARM: vgic: Fix sgi dispatch problem

commit 91021a6c8ffdc55804dab5acdfc7de4f278b9ac3 upstream.

When dispatch SGI(mode == 0), that is the vcpu of VM should send
sgi to the cpu which the target_cpus list.
So, there must add the "break" to branch of case 0.

Signed-off-by: Haibin Wang <wanghaibin.wang at huawei.com>
Acked-by: Marc Zyngier <marc.zyngier at arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall at linaro.org>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
 virt/kvm/arm/vgic.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 17c5ac7..0e8b10d 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -753,6 +753,7 @@ static void vgic_dispatch_sgi(struct kvm_vcpu *vcpu, u32 reg)
 	case 0:
 		if (!target_cpus)
+		break;

 	case 1:
 		target_cpus = ((1 << nrcpus) - 1) & ~(1 << vcpu_id) & 0xff;

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