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Diffstat (limited to 'hw/intc/arm_gic_kvm.c')
-rw-r--r--hw/intc/arm_gic_kvm.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/hw/intc/arm_gic_kvm.c b/hw/intc/arm_gic_kvm.c
index 9deb15e7e6..d7df423a7a 100644
--- a/hw/intc/arm_gic_kvm.c
+++ b/hw/intc/arm_gic_kvm.c
@@ -551,7 +551,16 @@ static void kvm_arm_gic_realize(DeviceState *dev, Error **errp)
KVM_DEV_ARM_VGIC_CTRL_INIT, NULL, true,
&error_abort);
}
+ } else if (kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
+ error_setg_errno(errp, -ret, "error creating in-kernel VGIC");
+ error_append_hint(errp,
+ "Perhaps the host CPU does not support GICv2?\n");
} else if (ret != -ENODEV && ret != -ENOTSUP) {
+ /*
+ * Very ancient kernel without KVM_CAP_DEVICE_CTRL: assume that
+ * ENODEV or ENOTSUP mean "can't create GICv2 with KVM_CREATE_DEVICE",
+ * and that we will get a GICv2 via KVM_CREATE_IRQCHIP.
+ */
error_setg_errno(errp, -ret, "error creating in-kernel VGIC");
return;
}