accel/system: Convert pre_resume() from AccelOpsClass to AccelClass

Accelerators call pre_resume() once. Since it isn't a method to
call for each vCPU, move it from AccelOpsClass to AccelClass.
Adapt WHPX.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250702185332.43650-21-philmd@linaro.org>

7 files changed, 15 insertions, 7 deletions

diff --git a/accel/accel-system.c b/accel/accel-system.c
index af713cc..c54c30f 100644
--- a/accel/accel-system.c
+++ b/accel/accel-system.c
@@ -62,6 +62,15 @@ void accel_setup_post(MachineState *ms)
     }
 }
 
+void accel_pre_resume(MachineState *ms, bool step_pending)
+{
+    AccelState *accel = ms->accelerator;
+    AccelClass *acc = ACCEL_GET_CLASS(accel);
+    if (acc->pre_resume_vm) {
+        acc->pre_resume_vm(accel, step_pending);
+    }
+}
+
 /* initialize the arch-independent accel operation interfaces */
 void accel_init_ops_interfaces(AccelClass *ac)
 {
diff --git a/include/qemu/accel.h b/include/qemu/accel.h
index 1c097ac..9e821d0 100644
--- a/include/qemu/accel.h
+++ b/include/qemu/accel.h
@@ -46,6 +46,7 @@ typedef struct AccelClass {
 
     /* system related hooks */
     void (*setup_post)(AccelState *as);
+    void (*pre_resume_vm)(AccelState *as, bool step_pending);
     bool (*has_memory)(AccelState *accel, AddressSpace *as,
                        hwaddr start_addr, hwaddr size);
 
@@ -86,6 +87,8 @@ int accel_init_machine(AccelState *accel, MachineState *ms);
 /* Called just before os_setup_post (ie just before drop OS privs) */
 void accel_setup_post(MachineState *ms);
 
+void accel_pre_resume(MachineState *ms, bool step_pending);
+
 /**
  * accel_cpu_instance_init:
  * @cpu: The CPU that needs to do accel-specific object initializations.
diff --git a/include/system/accel-ops.h b/include/system/accel-ops.h
index a786c7d..bf73835 100644
--- a/include/system/accel-ops.h
+++ b/include/system/accel-ops.h
@@ -61,7 +61,6 @@ struct AccelOpsClass {
      */
     void (*synchronize_state)(CPUState *cpu);
     void (*synchronize_pre_loadvm)(CPUState *cpu);
-    void (*synchronize_pre_resume)(bool step_pending);
 
     /* handle_interrupt is mandatory. */
     void (*handle_interrupt)(CPUState *cpu, int mask);
diff --git a/system/cpus.c b/system/cpus.c
index 0d0eec8..8e6da2e 100644
--- a/system/cpus.c
+++ b/system/cpus.c
@@ -768,9 +768,7 @@ int vm_prepare_start(bool step_pending)
      * WHPX accelerator needs to know whether we are going to step
      * any CPUs, before starting the first one.
      */
-    if (cpus_accel->synchronize_pre_resume) {
-        cpus_accel->synchronize_pre_resume(step_pending);
-    }
+    accel_pre_resume(MACHINE(qdev_get_machine()), step_pending);
 
     /* We are sending this now, but the CPUs will be resumed shortly later */
     qapi_event_send_resume();
diff --git a/target/i386/whpx/whpx-accel-ops.c b/target/i386/whpx/whpx-accel-ops.c
index 31cf15f..5f4841c 100644
--- a/target/i386/whpx/whpx-accel-ops.c
+++ b/target/i386/whpx/whpx-accel-ops.c
@@ -96,7 +96,6 @@ static void whpx_accel_ops_class_init(ObjectClass *oc, const void *data)
     ops->synchronize_post_init = whpx_cpu_synchronize_post_init;
     ops->synchronize_state = whpx_cpu_synchronize_state;
     ops->synchronize_pre_loadvm = whpx_cpu_synchronize_pre_loadvm;
-    ops->synchronize_pre_resume = whpx_cpu_synchronize_pre_resume;
 }
 
 static const TypeInfo whpx_accel_ops_type = {
diff --git a/target/i386/whpx/whpx-accel-ops.h b/target/i386/whpx/whpx-accel-ops.h
index e6cf155..54cfc25 100644
--- a/target/i386/whpx/whpx-accel-ops.h
+++ b/target/i386/whpx/whpx-accel-ops.h
@@ -21,7 +21,6 @@ void whpx_cpu_synchronize_state(CPUState *cpu);
 void whpx_cpu_synchronize_post_reset(CPUState *cpu);
 void whpx_cpu_synchronize_post_init(CPUState *cpu);
 void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu);
-void whpx_cpu_synchronize_pre_resume(bool step_pending);
 
 /* state subset only touched by the VCPU itself during runtime */
 #define WHPX_SET_RUNTIME_STATE   1
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index 721c478..faf56e1 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -2105,7 +2105,7 @@ void whpx_cpu_synchronize_pre_loadvm(CPUState *cpu)
     run_on_cpu(cpu, do_whpx_cpu_synchronize_pre_loadvm, RUN_ON_CPU_NULL);
 }
 
-void whpx_cpu_synchronize_pre_resume(bool step_pending)
+static void whpx_pre_resume_vm(AccelState *as, bool step_pending)
 {
     whpx_global.step_pending = step_pending;
 }
@@ -2697,6 +2697,7 @@ static void whpx_accel_class_init(ObjectClass *oc, const void *data)
     AccelClass *ac = ACCEL_CLASS(oc);
     ac->name = "WHPX";
     ac->init_machine = whpx_accel_init;
+    ac->pre_resume_vm = whpx_pre_resume_vm;
     ac->allowed = &whpx_allowed;
 
     object_class_property_add(oc, "kernel-irqchip", "on|off|split",