[Qemu-devel] [PATCH v4 3/3] hw/intc/arm_gic: Initialize the vgic in the realize function

[Eric Auger <eric.auger@linaro.org>]

This patch forces vgic initialization in the vgic realize function.
It uses a new group/attribute that allows such operation:
KVM_DEV_ARM_VGIC_GRP_CTRL/KVM_DEV_ARM_VGIC_CTRL_INIT

This earlier initialization allows, for example, to setup VFIO
signaling and irqfd after vgic initialization, on a reset notifier.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
---
 hw/intc/arm_gic_kvm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/hw/intc/arm_gic_kvm.c b/hw/intc/arm_gic_kvm.c
index 1ad3eb0..1395c9e 100644
--- a/hw/intc/arm_gic_kvm.c
+++ b/hw/intc/arm_gic_kvm.c
@@ -573,6 +573,12 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp)
         kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_NR_IRQS, 0, 0, &numirqs, 1);
     }
 
+    if (kvm_gic_supports_attr(s, KVM_DEV_ARM_VGIC_GRP_CTRL,
+                              KVM_DEV_ARM_VGIC_CTRL_INIT)) {
+        kvm_gic_access(s, KVM_DEV_ARM_VGIC_GRP_CTRL,
+                          KVM_DEV_ARM_VGIC_CTRL_INIT, 0, 0, 1);
+    }
+
     /* Distributor */
     memory_region_init_reservation(&s->iomem, OBJECT(s),
                                    "kvm-gic_dist", 0x1000);
-- 
1.8.3.2