Factor accel_create_vcpu_thread() out of system/cpus.c
to be able to access accel/ internal definitions.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 include/qemu/accel.h |  2 ++
 accel/accel-common.c | 20 ++++++++++++++++++++
 system/cpus.c        |  4 +---
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/include/qemu/accel.h b/include/qemu/accel.h
index 3c9aaf9523c..a351eebe567 100644
--- a/include/qemu/accel.h
+++ b/include/qemu/accel.h
@@ -93,6 +93,8 @@ void accel_cpu_instance_init(CPUState *cpu);
 
 bool accel_cpu_realize(AccelState *accel, CPUState *cpu, Error **errp);
 
+void accel_create_vcpu_thread(AccelState *accel, CPUState *cpu);
+
 /**
  * accel_cpu_common_realize:
  * @cpu: The CPU that needs to call accel-specific cpu realization.
diff --git a/accel/accel-common.c b/accel/accel-common.c
index 4f3b42e7112..6bd4ef47c2c 100644
--- a/accel/accel-common.c
+++ b/accel/accel-common.c
@@ -10,6 +10,7 @@
 #include "qemu/osdep.h"
 #include "qemu/accel.h"
 #include "qemu/target-info.h"
+#include "system/accel-ops.h"
 #include "accel/accel-cpu.h"
 #include "accel-internal.h"
 
@@ -88,6 +89,25 @@ void accel_cpu_instance_init(CPUState *cpu)
     }
 }
 
+void accel_create_vcpu_thread(AccelState *accel, CPUState *cpu)
+{
+    AccelClass *ac;
+
+    if (!accel) {
+        accel = current_accel();
+    }
+    ac = ACCEL_GET_CLASS(accel);
+
+    /* accelerators all implement the AccelOpsClass */
+    g_assert(ac->ops);
+
+    if (ac->ops->create_vcpu_thread != NULL) {
+        ac->ops->create_vcpu_thread(cpu);
+    } else {
+        g_assert_not_reached();
+    }
+}
+
 bool accel_cpu_realize(AccelState *accel, CPUState *cpu, Error **errp)
 {
     AccelClass *acc;
diff --git a/system/cpus.c b/system/cpus.c
index 4835e5ced48..b6dff01c7ea 100644
--- a/system/cpus.c
+++ b/system/cpus.c
@@ -709,9 +709,7 @@ void qemu_init_vcpu(CPUState *cpu)
         cpu_address_space_init(cpu, 0, "cpu-memory", cpu->memory);
     }
 
-    /* accelerators all implement the AccelOpsClass */
-    g_assert(cpus_accel != NULL && cpus_accel->create_vcpu_thread != NULL);
-    cpus_accel->create_vcpu_thread(cpu);
+    accel_create_vcpu_thread(NULL, cpu);
 
     while (!cpu->created) {
         qemu_cond_wait(&qemu_cpu_cond, &bql);
-- 
2.49.0