intc/kvm_gicv3: Factor out kvm_arm_gicv3_cpu_realize

The CPU object of hotplugged CPU will be defer-created (during
hotplug session), so we must factor out realization code to let
it can be applied to individual CPU.

Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
(cherry picked from commit 7b0dc0a49e5ea43bd4b4d85d3630db2efcbb493b)

intc-kvm_gicv3-Factor-out-kvm_arm_gicv3_cpu_realize.patch

@@ -0,0 +1,46 @@
+From dd03bc60712bd41a9606742ea4b769aa8e360655 Mon Sep 17 00:00:00 2001
+From: Keqian Zhu <zhukeqian1@huawei.com>
+Date: Fri, 10 Apr 2020 12:49:12 +0800
+Subject: [PATCH] intc/kvm_gicv3: Factor out kvm_arm_gicv3_cpu_realize
+
+The CPU object of hotplugged CPU will be defer-created (during
+hotplug session), so we must factor out realization code to let
+it can be applied to individual CPU.
+
+Signed-off-by: Keqian Zhu <zhukeqian1@huawei.com>
+Signed-off-by: Salil Mehta <salil.mehta@huawei.com>
+---
+ hw/intc/arm_gicv3_kvm.c | 10 +++++++---
+ 1 file changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/hw/intc/arm_gicv3_kvm.c b/hw/intc/arm_gicv3_kvm.c
+index 5ec5ff9ef6..596b31998b 100644
+--- a/hw/intc/arm_gicv3_kvm.c
++++ b/hw/intc/arm_gicv3_kvm.c
+@@ -764,6 +764,12 @@ static void vm_change_state_handler(void *opaque, bool running,
+     }
+ }
+ 
++static void kvm_arm_gicv3_cpu_realize(GICv3State *s, int ncpu)
++{
++    ARMCPU *cpu = ARM_CPU(qemu_get_cpu(ncpu));
++
++    define_arm_cp_regs(cpu, gicv3_cpuif_reginfo);
++}
+ 
+ static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp)
+ {
+@@ -790,9 +796,7 @@ static void kvm_arm_gicv3_realize(DeviceState *dev, Error **errp)
+     gicv3_init_irqs_and_mmio(s, kvm_arm_gicv3_set_irq, NULL);
+ 
+     for (i = 0; i < s->num_cpu; i++) {
+-        ARMCPU *cpu = ARM_CPU(qemu_get_cpu(i));
+-
+-        define_arm_cp_regs(cpu, gicv3_cpuif_reginfo);
++        kvm_arm_gicv3_cpu_realize(s, i);
+     }
+ 
+     /* Try to create the device via the device control API */
+-- 
+2.27.0
+