[PATCH v2 2/5] hw/i386/apic: Defer error check from apic_get_class to kvm_apic_realize

[Philippe Mathieu-Daudé]

apic_get_class() isn't supposed to fail. kvm_apic_realize() is
DeviceRealize() handler, which can fail. Defer the error check
to the latter.

Signed-off-by: Philippe Mathieu-Daudé <phi...@linaro.org>
---
 hw/i386/kvm/apic.c       | 5 +++++
 target/i386/cpu-sysemu.c | 8 --------
 2 files changed, 5 insertions(+), 8 deletions(-)

diff --git a/hw/i386/kvm/apic.c b/hw/i386/kvm/apic.c
index 1e89ca0899..4883308247 100644
--- a/hw/i386/kvm/apic.c
+++ b/hw/i386/kvm/apic.c
@@ -228,6 +228,11 @@ static void kvm_apic_realize(DeviceState *dev, Error 
**errp)
 {
     APICCommonState *s = APIC_COMMON(dev);
 
+    if (!kvm_irqchip_in_kernel()) {
+        error_setg(errp, "KVM does not support userspace APIC");
+        return;
+    }
+
     memory_region_init_io(&s->io_memory, OBJECT(s), &kvm_apic_io_ops, s,
                           "kvm-apic-msi", APIC_SPACE_SIZE);
 
diff --git a/target/i386/cpu-sysemu.c b/target/i386/cpu-sysemu.c
index 2375e48178..6a228c9178 100644
--- a/target/i386/cpu-sysemu.c
+++ b/target/i386/cpu-sysemu.c
@@ -253,10 +253,6 @@ APICCommonClass *apic_get_class(Error **errp)
 
     /* TODO: in-kernel irqchip for hvf */
     if (kvm_enabled()) {
-        if (!kvm_irqchip_in_kernel()) {
-            error_setg(errp, "KVM does not support userspace APIC");
-            return NULL;
-        }
         apic_type = "kvm-apic";
     } else if (xen_enabled()) {
         apic_type = "xen-apic";
@@ -272,10 +268,6 @@ void x86_cpu_apic_create(X86CPU *cpu, Error **errp)
     APICCommonState *apic;
     APICCommonClass *apic_class = apic_get_class(errp);
 
-    if (!apic_class) {
-        return;
-    }
-
     cpu->apic_state = DEVICE(object_new_with_class(OBJECT_CLASS(apic_class)));
     object_property_add_child(OBJECT(cpu), "lapic",
                               OBJECT(cpu->apic_state));
-- 
2.41.0