Merge tag 'accel-20250704' of https://github.com/philmd/qemu into staging

Accelerators patches

- Generic API consolidation, cleanups (dead code removal, documentation added)
- Remove monitor TCG 'info opcount' and @x-query-opcount
- Have HVF / NVMM / WHPX use generic CPUState::vcpu_dirty field
- Expose nvmm_enabled() and whpx_enabled() to common code
- Have hmp_info_registers() dump vector registers

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* tag 'accel-20250704' of https://github.com/philmd/qemu: (31 commits)
  MAINTAINERS: Add me as reviewer of overall accelerators section
  monitor/hmp-cmds-target: add CPU_DUMP_VPU in hmp_info_registers()
  accel: Pass AccelState argument to gdbstub_supported_sstep_flags()
  accel: Remove unused MachineState argument of AccelClass::setup_post()
  accel: Directly pass AccelState argument to AccelClass::has_memory()
  accel/kvm: Directly pass KVMState argument to do_kvm_create_vm()
  accel/kvm: Prefer local AccelState over global MachineState::accel
  accel/tcg: Prefer local AccelState over global current_accel()
  accel: Propagate AccelState to AccelClass::init_machine()
  accel: Keep reference to AccelOpsClass in AccelClass
  accel: Expose and register generic_handle_interrupt()
  accel/dummy: Extract 'dummy-cpus.h' header from 'system/cpus.h'
  accel/whpx: Expose whpx_enabled() to common code
  accel/nvmm: Expose nvmm_enabled() to common code
  accel/system: Document cpu_synchronize_state_post_init/reset()
  accel/system: Document cpu_synchronize_state()
  accel/kvm: Remove kvm_cpu_synchronize_state() stub
  accel/whpx: Replace @dirty field by generic CPUState::vcpu_dirty field
  accel/nvmm: Replace @dirty field by generic CPUState::vcpu_dirty field
  accel/hvf: Replace @dirty field by generic CPUState::vcpu_dirty field
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

Author: stefanhaRH

MAINTAINERS

@@ -495,6 +495,7 @@ Guest CPU Cores (other accelerators)
 Overall
 M: Richard Henderson <richard.henderson@linaro.org>
 R: Paolo Bonzini <pbonzini@redhat.com>
+R: Philippe Mathieu-Daudé <philmd@linaro.org>
 S: Maintained
 F: include/exec/cpu*.h
 F: include/exec/target_long.h
@@ -503,6 +504,7 @@ F: include/system/accel-*.h
 F: include/system/cpus.h
 F: include/accel/accel-cpu*.h
 F: accel/accel-*.?
+F: accel/dummy-cpus.?
 F: accel/Makefile.objs
 F: accel/stubs/Makefile.objs
 F: cpu-common.c
@@ -540,6 +542,7 @@ WHPX CPUs
 M: Sunil Muthuswamy <sunilmut@microsoft.com>
 S: Supported
 F: target/i386/whpx/
+F: accel/stubs/whpx-stub.c
 F: include/system/whpx.h
 
 X86 Instruction Emulator
@@ -586,6 +589,7 @@ NetBSD Virtual Machine Monitor (NVMM) CPU support
 M: Reinoud Zandijk <reinoud@netbsd.org>
 S: Maintained
 F: include/system/nvmm.h
+F: accel/stubs/nvmm-stub.c
 F: target/i386/nvmm/
 
 Hosts

accel/accel-common.c

@@ -124,7 +124,7 @@ int accel_supported_gdbstub_sstep_flags(void)
     AccelState *accel = current_accel();
     AccelClass *acc = ACCEL_GET_CLASS(accel);
     if (acc->gdbstub_supported_sstep_flags) {
-        return acc->gdbstub_supported_sstep_flags();
+        return acc->gdbstub_supported_sstep_flags(accel);
     }
     return 0;
 }

accel/accel-system.c

@@ -37,7 +37,7 @@ int accel_init_machine(AccelState *accel, MachineState *ms)
     int ret;
     ms->accelerator = accel;
     *(acc->allowed) = true;
-    ret = acc->init_machine(ms);
+    ret = acc->init_machine(accel, ms);
     if (ret < 0) {
         ms->accelerator = NULL;
         *(acc->allowed) = false;
@@ -58,7 +58,7 @@ void accel_setup_post(MachineState *ms)
     AccelState *accel = ms->accelerator;
     AccelClass *acc = ACCEL_GET_CLASS(accel);
     if (acc->setup_post) {
-        acc->setup_post(ms, accel);
+        acc->setup_post(accel);
     }
 }
 
@@ -85,8 +85,9 @@ void accel_init_ops_interfaces(AccelClass *ac)
      * non-NULL create_vcpu_thread operation.
      */
     ops = ACCEL_OPS_CLASS(oc);
+    ac->ops = ops;
     if (ops->ops_init) {
-        ops->ops_init(ops);
+        ops->ops_init(ac);
     }
     cpus_register_accel(ops);
 }

accel/dummy-cpus.c

@@ -17,6 +17,7 @@
 #include "qemu/guest-random.h"
 #include "qemu/main-loop.h"
 #include "hw/core/cpu.h"
+#include "accel/dummy-cpus.h"
 
 static void *dummy_cpu_thread_fn(void *arg)
 {

accel/dummy-cpus.h

@@ -0,0 +1,14 @@
+/*
+ * Dummy cpu thread code
+ *
+ * Copyright IBM, Corp. 2011
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef ACCEL_DUMMY_CPUS_H
+#define ACCEL_DUMMY_CPUS_H
+
+void dummy_start_vcpu_thread(CPUState *cpu);
+
+#endif