qom: Have class_init() take a const data argument

Mechanical change using gsed, then style manually adapted
to pass checkpatch.pl script.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250424194905.82506-4-philmd@linaro.org>

41 files changed, 109 insertions, 108 deletions

diff --git a/target/alpha/cpu.c b/target/alpha/cpu.c
index 35fb145d27..27e2008a4e 100644
--- a/target/alpha/cpu.c
+++ b/target/alpha/cpu.c
@@ -258,7 +258,7 @@ static const TCGCPUOps alpha_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void alpha_cpu_class_init(ObjectClass *oc, void *data)
+static void alpha_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/arm/cpu.c b/target/arm/cpu.c
index 377791c84d..81257f20fd 100644
--- a/target/arm/cpu.c
+++ b/target/arm/cpu.c
@@ -2699,7 +2699,7 @@ static const TCGCPUOps arm_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
-static void arm_cpu_class_init(ObjectClass *oc, void *data)
+static void arm_cpu_class_init(ObjectClass *oc, const void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(acc);
@@ -2740,7 +2740,7 @@ static void arm_cpu_instance_init(Object *obj)
     arm_cpu_post_init(obj);
 }
 
-static void cpu_register_class_init(ObjectClass *oc, void *data)
+static void cpu_register_class_init(ObjectClass *oc, const void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(acc);
diff --git a/target/arm/cpu.h b/target/arm/cpu.h
index 3705b34285..fdcf8cd1ae 100644
--- a/target/arm/cpu.h
+++ b/target/arm/cpu.h
@@ -1123,7 +1123,7 @@ typedef struct ARMCPUInfo {
     const char *name;
     const char *deprecation_note;
     void (*initfn)(Object *obj);
-    void (*class_init)(ObjectClass *oc, void *data);
+    void (*class_init)(ObjectClass *oc, const void *data);
 } ARMCPUInfo;
 
 /**
diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c
index 8188ede5cc..1184c92b4c 100644
--- a/target/arm/cpu64.c
+++ b/target/arm/cpu64.c
@@ -818,7 +818,7 @@ static const gchar *aarch64_gdb_arch_name(CPUState *cs)
     return "aarch64";
 }
 
-static void aarch64_cpu_class_init(ObjectClass *oc, void *data)
+static void aarch64_cpu_class_init(ObjectClass *oc, const void *data)
 {
     CPUClass *cc = CPU_CLASS(oc);
 
@@ -842,7 +842,7 @@ static void aarch64_cpu_instance_init(Object *obj)
     arm_cpu_post_init(obj);
 }
 
-static void cpu_register_class_init(ObjectClass *oc, void *data)
+static void cpu_register_class_init(ObjectClass *oc, const void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
 
diff --git a/target/arm/tcg/cpu-v7m.c b/target/arm/tcg/cpu-v7m.c
index f71560aa43..7426aac0dc 100644
--- a/target/arm/tcg/cpu-v7m.c
+++ b/target/arm/tcg/cpu-v7m.c
@@ -259,7 +259,7 @@ static const TCGCPUOps arm_v7m_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void arm_v7m_class_init(ObjectClass *oc, void *data)
+static void arm_v7m_class_init(ObjectClass *oc, const void *data)
 {
     ARMCPUClass *acc = ARM_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/avr/cpu.c b/target/avr/cpu.c
index 84f3b839c9..3f261c6fec 100644
--- a/target/avr/cpu.c
+++ b/target/avr/cpu.c
@@ -237,7 +237,7 @@ static const TCGCPUOps avr_tcg_ops = {
     .do_interrupt = avr_cpu_do_interrupt,
 };
 
-static void avr_cpu_class_init(ObjectClass *oc, void *data)
+static void avr_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/hexagon/cpu.c b/target/hexagon/cpu.c
index 3c5191282e..a5d31c33bd 100644
--- a/target/hexagon/cpu.c
+++ b/target/hexagon/cpu.c
@@ -335,7 +335,7 @@ static const TCGCPUOps hexagon_tcg_ops = {
     .mmu_index = hexagon_cpu_mmu_index,
 };
 
-static void hexagon_cpu_class_init(ObjectClass *c, void *data)
+static void hexagon_cpu_class_init(ObjectClass *c, const void *data)
 {
     HexagonCPUClass *mcc = HEXAGON_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
diff --git a/target/hppa/cpu.c b/target/hppa/cpu.c
index 10e18c945e..b792cb247a 100644
--- a/target/hppa/cpu.c
+++ b/target/hppa/cpu.c
@@ -278,7 +278,7 @@ static const TCGCPUOps hppa_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void hppa_cpu_class_init(ObjectClass *oc, void *data)
+static void hppa_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/i386/confidential-guest.c b/target/i386/confidential-guest.c
index b3727845ad..cfb71bf034 100644
--- a/target/i386/confidential-guest.c
+++ b/target/i386/confidential-guest.c
@@ -20,7 +20,7 @@ OBJECT_DEFINE_ABSTRACT_TYPE(X86ConfidentialGuest,
                             X86_CONFIDENTIAL_GUEST,
                             CONFIDENTIAL_GUEST_SUPPORT)
 
-static void x86_confidential_guest_class_init(ObjectClass *oc, void *data)
+static void x86_confidential_guest_class_init(ObjectClass *oc, const void *data)
 {
 }
 
diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 955295fe79..6f21d5ed22 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -5703,7 +5703,7 @@ static void max_x86_cpu_realize(DeviceState *dev, Error **errp)
     x86_cpu_realizefn(dev, errp);
 }
 
-static void max_x86_cpu_class_init(ObjectClass *oc, void *data)
+static void max_x86_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
@@ -6702,7 +6702,7 @@ static const gchar *x86_gdb_arch_name(CPUState *cs)
 #endif
 }
 
-static void x86_cpu_cpudef_class_init(ObjectClass *oc, void *data)
+static void x86_cpu_cpudef_class_init(ObjectClass *oc, const void *data)
 {
     const X86CPUModel *model = data;
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
@@ -8886,7 +8886,7 @@ static const struct SysemuCPUOps i386_sysemu_ops = {
 };
 #endif
 
-static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
+static void x86_cpu_common_class_init(ObjectClass *oc, const void *data)
 {
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
@@ -8986,7 +8986,7 @@ static const TypeInfo x86_cpu_type_info = {
 };
 
 /* "base" CPU model, used by query-cpu-model-expansion */
-static void x86_cpu_base_class_init(ObjectClass *oc, void *data)
+static void x86_cpu_base_class_init(ObjectClass *oc, const void *data)
 {
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
 
diff --git a/target/i386/host-cpu.c b/target/i386/host-cpu.c
index 072731a4dd..a2d3830f5b 100644
--- a/target/i386/host-cpu.c
+++ b/target/i386/host-cpu.c
@@ -161,7 +161,7 @@ void host_cpu_max_instance_init(X86CPU *cpu)
                             &error_abort);
 }
 
-static void host_cpu_class_init(ObjectClass *oc, void *data)
+static void host_cpu_class_init(ObjectClass *oc, const void *data)
 {
     X86CPUClass *xcc = X86_CPU_CLASS(oc);
 
diff --git a/target/i386/hvf/hvf-cpu.c b/target/i386/hvf/hvf-cpu.c
index b5f4c80028..dfdda70126 100644
--- a/target/i386/hvf/hvf-cpu.c
+++ b/target/i386/hvf/hvf-cpu.c
@@ -74,7 +74,7 @@ static void hvf_cpu_instance_init(CPUState *cs)
     hvf_cpu_xsave_init();
 }
 
-static void hvf_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void hvf_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
diff --git a/target/i386/kvm/kvm-cpu.c b/target/i386/kvm/kvm-cpu.c
index 6269fa8045..16bde4de01 100644
--- a/target/i386/kvm/kvm-cpu.c
+++ b/target/i386/kvm/kvm-cpu.c
@@ -223,7 +223,7 @@ static void kvm_cpu_instance_init(CPUState *cs)
     kvm_cpu_xsave_init();
 }
 
-static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void kvm_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
diff --git a/target/i386/nvmm/nvmm-accel-ops.c b/target/i386/nvmm/nvmm-accel-ops.c
index 4e4e63de78..21443078b7 100644
--- a/target/i386/nvmm/nvmm-accel-ops.c
+++ b/target/i386/nvmm/nvmm-accel-ops.c
@@ -81,7 +81,7 @@ static void nvmm_kick_vcpu_thread(CPUState *cpu)
     cpus_kick_thread(cpu);
 }
 
-static void nvmm_accel_ops_class_init(ObjectClass *oc, void *data)
+static void nvmm_accel_ops_class_init(ObjectClass *oc, const void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
 
diff --git a/target/i386/nvmm/nvmm-all.c b/target/i386/nvmm/nvmm-all.c
index 17394d073d..f1c6120ccf 100644
--- a/target/i386/nvmm/nvmm-all.c
+++ b/target/i386/nvmm/nvmm-all.c
@@ -1200,7 +1200,7 @@ nvmm_enabled(void)
 }
 
 static void
-nvmm_accel_class_init(ObjectClass *oc, void *data)
+nvmm_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelClass *ac = ACCEL_CLASS(oc);
     ac->name = "NVMM";
diff --git a/target/i386/sev.c b/target/i386/sev.c
index 878dd20f2c..7ef4801d5f 100644
--- a/target/i386/sev.c
+++ b/target/i386/sev.c
@@ -2046,7 +2046,7 @@ static void sev_common_set_kernel_hashes(Object *obj, bool value, Error **errp)
 }
 
 static void
-sev_common_class_init(ObjectClass *oc, void *data)
+sev_common_class_init(ObjectClass *oc, const void *data)
 {
     ConfidentialGuestSupportClass *klass = CONFIDENTIAL_GUEST_SUPPORT_CLASS(oc);
 
@@ -2141,7 +2141,7 @@ static void sev_guest_set_legacy_vm_type(Object *obj, Visitor *v,
 }
 
 static void
-sev_guest_class_init(ObjectClass *oc, void *data)
+sev_guest_class_init(ObjectClass *oc, const void *data)
 {
     SevCommonStateClass *klass = SEV_COMMON_CLASS(oc);
     X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
@@ -2395,7 +2395,7 @@ sev_snp_guest_set_host_data(Object *obj, const char *value, Error **errp)
 }
 
 static void
-sev_snp_guest_class_init(ObjectClass *oc, void *data)
+sev_snp_guest_class_init(ObjectClass *oc, const void *data)
 {
     SevCommonStateClass *klass = SEV_COMMON_CLASS(oc);
     X86ConfidentialGuestClass *x86_klass = X86_CONFIDENTIAL_GUEST_CLASS(oc);
diff --git a/target/i386/tcg/tcg-cpu.c b/target/i386/tcg/tcg-cpu.c
index 621502c984..e53aaa31bf 100644
--- a/target/i386/tcg/tcg-cpu.c
+++ b/target/i386/tcg/tcg-cpu.c
@@ -193,7 +193,7 @@ static void x86_tcg_cpu_instance_init(CPUState *cs)
     x86_tcg_cpu_xsave_init();
 }
 
-static void x86_tcg_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void x86_tcg_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
diff --git a/target/i386/whpx/whpx-accel-ops.c b/target/i386/whpx/whpx-accel-ops.c
index 81fdd06e48..b8bebe403c 100644
--- a/target/i386/whpx/whpx-accel-ops.c
+++ b/target/i386/whpx/whpx-accel-ops.c
@@ -83,7 +83,7 @@ static bool whpx_vcpu_thread_is_idle(CPUState *cpu)
     return !whpx_apic_in_platform();
 }
 
-static void whpx_accel_ops_class_init(ObjectClass *oc, void *data)
+static void whpx_accel_ops_class_init(ObjectClass *oc, const void *data)
 {
     AccelOpsClass *ops = ACCEL_OPS_CLASS(oc);
 
diff --git a/target/i386/whpx/whpx-all.c b/target/i386/whpx/whpx-all.c
index 2e1c03b20e..cf6d3e4cdd 100644
--- a/target/i386/whpx/whpx-all.c
+++ b/target/i386/whpx/whpx-all.c
@@ -2698,7 +2698,7 @@ bool whpx_apic_in_platform(void) {
     return whpx_global.apic_in_platform;
 }
 
-static void whpx_accel_class_init(ObjectClass *oc, void *data)
+static void whpx_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelClass *ac = ACCEL_CLASS(oc);
     ac->name = "WHPX";
diff --git a/target/i386/whpx/whpx-apic.c b/target/i386/whpx/whpx-apic.c
index 630a9616d7..e1ef6d4e6d 100644
--- a/target/i386/whpx/whpx-apic.c
+++ b/target/i386/whpx/whpx-apic.c
@@ -252,7 +252,7 @@ static void whpx_apic_realize(DeviceState *dev, Error **errp)
     msi_nonbroken = true;
 }
 
-static void whpx_apic_class_init(ObjectClass *klass, void *data)
+static void whpx_apic_class_init(ObjectClass *klass, const void *data)
 {
     APICCommonClass *k = APIC_COMMON_CLASS(klass);
 
diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c
index 0e6c89eb1b..8ad45b453d 100644
--- a/target/loongarch/cpu.c
+++ b/target/loongarch/cpu.c
@@ -908,7 +908,7 @@ static const Property loongarch_cpu_properties[] = {
     DEFINE_PROP_INT32("node-id", LoongArchCPU, node_id, CPU_UNSET_NUMA_NODE_ID),
 };
 
-static void loongarch_cpu_class_init(ObjectClass *c, void *data)
+static void loongarch_cpu_class_init(ObjectClass *c, const void *data)
 {
     LoongArchCPUClass *lacc = LOONGARCH_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
@@ -948,7 +948,7 @@ static const gchar *loongarch32_gdb_arch_name(CPUState *cs)
     return "loongarch32";
 }
 
-static void loongarch32_cpu_class_init(ObjectClass *c, void *data)
+static void loongarch32_cpu_class_init(ObjectClass *c, const void *data)
 {
     CPUClass *cc = CPU_CLASS(c);
 
@@ -961,7 +961,7 @@ static const gchar *loongarch64_gdb_arch_name(CPUState *cs)
     return "loongarch64";
 }
 
-static void loongarch64_cpu_class_init(ObjectClass *c, void *data)
+static void loongarch64_cpu_class_init(ObjectClass *c, const void *data)
 {
     CPUClass *cc = CPU_CLASS(c);
 
diff --git a/target/m68k/cpu.c b/target/m68k/cpu.c
index 99adc5eb91..6f33b86c7d 100644
--- a/target/m68k/cpu.c
+++ b/target/m68k/cpu.c
@@ -607,7 +607,7 @@ static const TCGCPUOps m68k_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void m68k_cpu_class_init(ObjectClass *c, void *data)
+static void m68k_cpu_class_init(ObjectClass *c, const void *data)
 {
     M68kCPUClass *mcc = M68K_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
@@ -634,7 +634,7 @@ static void m68k_cpu_class_init(ObjectClass *c, void *data)
     cc->tcg_ops = &m68k_tcg_ops;
 }
 
-static void m68k_cpu_class_init_cf_core(ObjectClass *c, void *data)
+static void m68k_cpu_class_init_cf_core(ObjectClass *c, const void *data)
 {
     CPUClass *cc = CPU_CLASS(c);
 
@@ -649,7 +649,7 @@ static void m68k_cpu_class_init_cf_core(ObjectClass *c, void *data)
         .class_init = m68k_cpu_class_init_cf_core    \
     }
 
-static void m68k_cpu_class_init_m68k_core(ObjectClass *c, void *data)
+static void m68k_cpu_class_init_m68k_core(ObjectClass *c, const void *data)
 {
     CPUClass *cc = CPU_CLASS(c);
 
diff --git a/target/microblaze/cpu.c b/target/microblaze/cpu.c
index edfb05758b..00a2730de4 100644
--- a/target/microblaze/cpu.c
+++ b/target/microblaze/cpu.c
@@ -447,7 +447,7 @@ static const TCGCPUOps mb_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void mb_cpu_class_init(ObjectClass *oc, void *data)
+static void mb_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/mips/cpu.c b/target/mips/cpu.c
index 473cecdebc..29611a0a1c 100644
--- a/target/mips/cpu.c
+++ b/target/mips/cpu.c
@@ -572,7 +572,7 @@ static const TCGCPUOps mips_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
-static void mips_cpu_class_init(ObjectClass *c, void *data)
+static void mips_cpu_class_init(ObjectClass *c, const void *data)
 {
     MIPSCPUClass *mcc = MIPS_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
@@ -613,7 +613,7 @@ static const TypeInfo mips_cpu_type_info = {
     .class_init = mips_cpu_class_init,
 };
 
-static void mips_cpu_cpudef_class_init(ObjectClass *oc, void *data)
+static void mips_cpu_cpudef_class_init(ObjectClass *oc, const void *data)
 {
     MIPSCPUClass *mcc = MIPS_CPU_CLASS(oc);
     mcc->cpu_def = data;
diff --git a/target/openrisc/cpu.c b/target/openrisc/cpu.c
index 6601e0c066..2ec267efec 100644
--- a/target/openrisc/cpu.c
+++ b/target/openrisc/cpu.c
@@ -260,7 +260,7 @@ static const TCGCPUOps openrisc_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void openrisc_cpu_class_init(ObjectClass *oc, void *data)
+static void openrisc_cpu_class_init(ObjectClass *oc, const void *data)
 {
     OpenRISCCPUClass *occ = OPENRISC_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(occ);
diff --git a/target/ppc/cpu-models.c b/target/ppc/cpu-models.c
index ece3481781..ea86ea202a 100644
--- a/target/ppc/cpu-models.c
+++ b/target/ppc/cpu-models.c
@@ -35,7 +35,7 @@
 #define POWERPC_DEF_SVR(_name, _desc, _pvr, _svr, _type)                    \
     static void                                                             \
     glue(POWERPC_DEF_PREFIX(_pvr, _svr, _type), _cpu_class_init)            \
-    (ObjectClass *oc, void *data)                                           \
+    (ObjectClass *oc, const void *data)                                     \
     {                                                                       \
         DeviceClass *dc = DEVICE_CLASS(oc);                                 \
         PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);                       \
diff --git a/target/ppc/cpu.h b/target/ppc/cpu.h
index f4cc823c5c..13115a89ff 100644
--- a/target/ppc/cpu.h
+++ b/target/ppc/cpu.h
@@ -3047,7 +3047,8 @@ static inline int check_attn_none(CPUPPCState *env)
 
 #define POWERPC_FAMILY(_name)                                               \
     static void                                                             \
-    glue(glue(ppc_, _name), _cpu_family_class_init)(ObjectClass *, void *); \
+    glue(glue(ppc_, _name), _cpu_family_class_init)(ObjectClass *,          \
+                                                    const void *);          \
                                                                             \
     static const TypeInfo                                                   \
     glue(glue(ppc_, _name), _cpu_family_type_info) = {                      \
diff --git a/target/ppc/cpu_init.c b/target/ppc/cpu_init.c
index 077991ed53..90b21b9c93 100644
--- a/target/ppc/cpu_init.c
+++ b/target/ppc/cpu_init.c
@@ -2167,7 +2167,7 @@ static void init_proc_405(CPUPPCState *env)
     SET_WDT_PERIOD(16, 20, 24, 28);
 }
 
-POWERPC_FAMILY(405)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(405)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2235,7 +2235,7 @@ static void init_proc_440EP(CPUPPCState *env)
     SET_WDT_PERIOD(20, 24, 28, 32);
 }
 
-POWERPC_FAMILY(440EP)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(440EP)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2274,7 +2274,7 @@ POWERPC_FAMILY(440EP)(ObjectClass *oc, void *data)
                  POWERPC_FLAG_DE | POWERPC_FLAG_BUS_CLK;
 }
 
-POWERPC_FAMILY(460EX)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(460EX)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2329,7 +2329,7 @@ static void init_proc_440GP(CPUPPCState *env)
     SET_WDT_PERIOD(20, 24, 28, 32);
 }
 
-POWERPC_FAMILY(440GP)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(440GP)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2399,7 +2399,7 @@ static void init_proc_440x5(CPUPPCState *env)
     SET_WDT_PERIOD(20, 24, 28, 32);
 }
 
-POWERPC_FAMILY(440x5)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(440x5)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2435,7 +2435,7 @@ POWERPC_FAMILY(440x5)(ObjectClass *oc, void *data)
                  POWERPC_FLAG_DE | POWERPC_FLAG_BUS_CLK;
 }
 
-POWERPC_FAMILY(440x5wDFPU)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(440x5wDFPU)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2484,7 +2484,7 @@ static void init_proc_MPC5xx(CPUPPCState *env)
     /* XXX: TODO: allocate internal IRQ controller */
 }
 
-POWERPC_FAMILY(MPC5xx)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(MPC5xx)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2527,7 +2527,7 @@ static void init_proc_MPC8xx(CPUPPCState *env)
     /* XXX: TODO: allocate internal IRQ controller */
 }
 
-POWERPC_FAMILY(MPC8xx)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(MPC8xx)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2578,7 +2578,7 @@ static void init_proc_G2(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(G2)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(G2)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2617,7 +2617,7 @@ POWERPC_FAMILY(G2)(ObjectClass *oc, void *data)
                  POWERPC_FLAG_BE | POWERPC_FLAG_BUS_CLK;
 }
 
-POWERPC_FAMILY(G2LE)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(G2LE)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -2752,7 +2752,7 @@ static void init_proc_e200(CPUPPCState *env)
     /* XXX: TODO: allocate internal IRQ controller */
 }
 
-POWERPC_FAMILY(e200)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e200)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3045,7 +3045,7 @@ static void init_proc_e500v1(CPUPPCState *env)
     init_proc_e500(env, fsl_e500v1);
 }
 
-POWERPC_FAMILY(e500v1)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e500v1)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3089,7 +3089,7 @@ static void init_proc_e500v2(CPUPPCState *env)
     init_proc_e500(env, fsl_e500v2);
 }
 
-POWERPC_FAMILY(e500v2)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e500v2)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3133,7 +3133,7 @@ static void init_proc_e500mc(CPUPPCState *env)
     init_proc_e500(env, fsl_e500mc);
 }
 
-POWERPC_FAMILY(e500mc)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e500mc)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3180,7 +3180,7 @@ static void init_proc_e5500(CPUPPCState *env)
     init_proc_e500(env, fsl_e5500);
 }
 
-POWERPC_FAMILY(e5500)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e5500)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3229,7 +3229,7 @@ static void init_proc_e6500(CPUPPCState *env)
     init_proc_e500(env, fsl_e6500);
 }
 
-POWERPC_FAMILY(e6500)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e6500)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3292,7 +3292,7 @@ static void init_proc_603(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(603)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(603)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3332,7 +3332,7 @@ POWERPC_FAMILY(603)(ObjectClass *oc, void *data)
                  POWERPC_FLAG_BE | POWERPC_FLAG_BUS_CLK;
 }
 
-POWERPC_FAMILY(603E)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(603E)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3378,7 +3378,7 @@ static void init_proc_e300(CPUPPCState *env)
     register_e300_sprs(env);
 }
 
-POWERPC_FAMILY(e300)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e300)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3434,7 +3434,7 @@ static void init_proc_604(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(604)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(604)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3480,7 +3480,7 @@ static void init_proc_604E(CPUPPCState *env)
     register_604e_sprs(env);
 }
 
-POWERPC_FAMILY(604E)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(604E)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3537,7 +3537,7 @@ static void init_proc_740(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(740)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(740)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3603,7 +3603,7 @@ static void init_proc_750(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(750)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(750)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3750,7 +3750,7 @@ static void init_proc_750cl(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(750cl)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(750cl)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3858,7 +3858,7 @@ static void init_proc_750cx(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(750cx)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(750cx)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -3931,7 +3931,7 @@ static void init_proc_750fx(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(750fx)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(750fx)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4004,7 +4004,7 @@ static void init_proc_750gx(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(750gx)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(750gx)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4064,7 +4064,7 @@ static void init_proc_745(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(745)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(745)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4110,7 +4110,7 @@ static void init_proc_755(CPUPPCState *env)
     register_755_sprs(env);
 }
 
-POWERPC_FAMILY(755)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(755)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4177,7 +4177,7 @@ static void init_proc_7400(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7400)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7400)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4257,7 +4257,7 @@ static void init_proc_7410(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7410)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7410)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4358,7 +4358,7 @@ static void init_proc_7440(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7440)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7440)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4481,7 +4481,7 @@ static void init_proc_7450(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7450)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7450)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4611,7 +4611,7 @@ static void init_proc_7445(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7445)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7445)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4743,7 +4743,7 @@ static void init_proc_7455(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7455)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7455)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -4895,7 +4895,7 @@ static void init_proc_7457(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(7457)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(7457)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -5030,7 +5030,7 @@ static void init_proc_e600(CPUPPCState *env)
     ppc6xx_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(e600)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(e600)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -5995,7 +5995,7 @@ static void init_proc_970(CPUPPCState *env)
     ppc970_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(970)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(970)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6070,7 +6070,7 @@ static void init_proc_power5plus(CPUPPCState *env)
     ppc970_irq_init(env_archcpu(env));
 }
 
-POWERPC_FAMILY(POWER5P)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER5P)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6176,7 +6176,7 @@ static bool ppc_pvr_match_power7(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
     return true;
 }
 
-POWERPC_FAMILY(POWER7)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER7)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6340,7 +6340,7 @@ static bool ppc_pvr_match_power8(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
     return true;
 }
 
-POWERPC_FAMILY(POWER8)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER8)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6549,7 +6549,7 @@ static bool ppc_pvr_match_power9(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
     return false;
 }
 
-POWERPC_FAMILY(POWER9)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER9)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6647,7 +6647,7 @@ static bool ppc_pvr_match_power10(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
     return false;
 }
 
-POWERPC_FAMILY(POWER10)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER10)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -6707,7 +6707,7 @@ static bool ppc_pvr_match_power11(PowerPCCPUClass *pcc, uint32_t pvr, bool best)
     return false;
 }
 
-POWERPC_FAMILY(POWER11)(ObjectClass *oc, void *data)
+POWERPC_FAMILY(POWER11)(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
@@ -7504,7 +7504,7 @@ static const TCGCPUOps ppc_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
-static void ppc_cpu_class_init(ObjectClass *oc, void *data)
+static void ppc_cpu_class_init(ObjectClass *oc, const void *data)
 {
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/ppc/kvm.c b/target/ppc/kvm.c
index 3fe54798c6..8a957c3c7d 100644
--- a/target/ppc/kvm.c
+++ b/target/ppc/kvm.c
@@ -2383,7 +2383,7 @@ static bool kvmppc_cpu_realize(CPUState *cs, Error **errp)
     return true;
 }
 
-static void kvmppc_host_cpu_class_init(ObjectClass *oc, void *data)
+static void kvmppc_host_cpu_class_init(ObjectClass *oc, const void *data)
 {
     PowerPCCPUClass *pcc = POWERPC_CPU_CLASS(oc);
     uint32_t dcache_size = kvmppc_read_int_cpu_dt("d-cache-size");
@@ -3004,7 +3004,7 @@ void kvm_arch_accel_class_init(ObjectClass *oc)
 {
 }
 
-static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void kvm_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 2b830b3317..e0604f4c78 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -3028,7 +3028,7 @@ static const struct SysemuCPUOps riscv_sysemu_ops = {
 };
 #endif
 
-static void riscv_cpu_common_class_init(ObjectClass *c, void *data)
+static void riscv_cpu_common_class_init(ObjectClass *c, const void *data)
 {
     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
@@ -3061,7 +3061,7 @@ static void riscv_cpu_common_class_init(ObjectClass *c, void *data)
     device_class_set_props(dc, riscv_cpu_properties);
 }
 
-static void riscv_cpu_class_init(ObjectClass *c, void *data)
+static void riscv_cpu_class_init(ObjectClass *c, const void *data)
 {
     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
 
diff --git a/target/riscv/kvm/kvm-cpu.c b/target/riscv/kvm/kvm-cpu.c
index 5315134e08..75724b6af4 100644
--- a/target/riscv/kvm/kvm-cpu.c
+++ b/target/riscv/kvm/kvm-cpu.c
@@ -1976,7 +1976,7 @@ void riscv_kvm_cpu_finalize_features(RISCVCPU *cpu, Error **errp)
     kvm_riscv_destroy_scratch_vcpu(&kvmcpu);
 }
 
-static void kvm_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void kvm_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
@@ -1997,7 +1997,7 @@ static void kvm_cpu_accel_register_types(void)
 }
 type_init(kvm_cpu_accel_register_types);
 
-static void riscv_host_cpu_class_init(ObjectClass *c, void *data)
+static void riscv_host_cpu_class_init(ObjectClass *c, const void *data)
 {
     RISCVCPUClass *mcc = RISCV_CPU_CLASS(c);
 
diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c
index 426145c3b9..54ac54f2e1 100644
--- a/target/riscv/tcg/tcg-cpu.c
+++ b/target/riscv/tcg/tcg-cpu.c
@@ -1528,7 +1528,7 @@ static void riscv_tcg_cpu_instance_init(CPUState *cs)
     }
 }
 
-static void riscv_tcg_cpu_accel_class_init(ObjectClass *oc, void *data)
+static void riscv_tcg_cpu_accel_class_init(ObjectClass *oc, const void *data)
 {
     AccelCPUClass *acc = ACCEL_CPU_CLASS(oc);
 
diff --git a/target/rx/cpu.c b/target/rx/cpu.c
index 0a7a2b55b5..a51b543028 100644
--- a/target/rx/cpu.c
+++ b/target/rx/cpu.c
@@ -220,7 +220,7 @@ static const TCGCPUOps rx_tcg_ops = {
     .do_interrupt = rx_cpu_do_interrupt,
 };
 
-static void rx_cpu_class_init(ObjectClass *klass, void *data)
+static void rx_cpu_class_init(ObjectClass *klass, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(klass);
     CPUClass *cc = CPU_CLASS(klass);
diff --git a/target/s390x/cpu.c b/target/s390x/cpu.c
index 43fc3194bc..3d644f5e23 100644
--- a/target/s390x/cpu.c
+++ b/target/s390x/cpu.c
@@ -371,7 +371,7 @@ static const TCGCPUOps s390_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
-static void s390_cpu_class_init(ObjectClass *oc, void *data)
+static void s390_cpu_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *scc = S390_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(scc);
diff --git a/target/s390x/cpu_models.c b/target/s390x/cpu_models.c
index 8e0b01dc65..b097ed55d9 100644
--- a/target/s390x/cpu_models.c
+++ b/target/s390x/cpu_models.c
@@ -919,7 +919,7 @@ void s390_cpu_model_class_register_props(ObjectClass *oc)
 }
 
 #ifdef CONFIG_KVM
-static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
+static void s390_host_cpu_model_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 
@@ -928,7 +928,7 @@ static void s390_host_cpu_model_class_init(ObjectClass *oc, void *data)
 }
 #endif
 
-static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
+static void s390_base_cpu_model_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 
@@ -939,7 +939,7 @@ static void s390_base_cpu_model_class_init(ObjectClass *oc, void *data)
     xcc->desc = xcc->cpu_def->desc;
 }
 
-static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
+static void s390_cpu_model_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 
@@ -949,7 +949,7 @@ static void s390_cpu_model_class_init(ObjectClass *oc, void *data)
     xcc->desc = xcc->cpu_def->desc;
 }
 
-static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
+static void s390_qemu_cpu_model_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 
@@ -958,7 +958,7 @@ static void s390_qemu_cpu_model_class_init(ObjectClass *oc, void *data)
                                 qemu_hw_version());
 }
 
-static void s390_max_cpu_model_class_init(ObjectClass *oc, void *data)
+static void s390_max_cpu_model_class_init(ObjectClass *oc, const void *data)
 {
     S390CPUClass *xcc = S390_CPU_CLASS(oc);
 
diff --git a/target/s390x/kvm/pv.c b/target/s390x/kvm/pv.c
index b191a4a68a..fe0a72c416 100644
--- a/target/s390x/kvm/pv.c
+++ b/target/s390x/kvm/pv.c
@@ -367,7 +367,7 @@ OBJECT_DEFINE_TYPE_WITH_INTERFACES(S390PVGuest,
                                    { TYPE_USER_CREATABLE },
                                    { NULL })
 
-static void s390_pv_guest_class_init(ObjectClass *oc, void *data)
+static void s390_pv_guest_class_init(ObjectClass *oc, const void *data)
 {
     ConfidentialGuestSupportClass *klass = CONFIDENTIAL_GUEST_SUPPORT_CLASS(oc);
 
diff --git a/target/sh4/cpu.c b/target/sh4/cpu.c
index 861fdd47f7..57d7b5fbc8 100644
--- a/target/sh4/cpu.c
+++ b/target/sh4/cpu.c
@@ -177,7 +177,7 @@ static void sh7750r_cpu_initfn(Object *obj)
     env->features = SH_FEATURE_BCR3_AND_BCR4;
 }
 
-static void sh7750r_class_init(ObjectClass *oc, void *data)
+static void sh7750r_class_init(ObjectClass *oc, const void *data)
 {
     SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc);
 
@@ -194,7 +194,7 @@ static void sh7751r_cpu_initfn(Object *obj)
     env->features = SH_FEATURE_BCR3_AND_BCR4;
 }
 
-static void sh7751r_class_init(ObjectClass *oc, void *data)
+static void sh7751r_class_init(ObjectClass *oc, const void *data)
 {
     SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc);
 
@@ -211,7 +211,7 @@ static void sh7785_cpu_initfn(Object *obj)
     env->features = SH_FEATURE_SH4A;
 }
 
-static void sh7785_class_init(ObjectClass *oc, void *data)
+static void sh7785_class_init(ObjectClass *oc, const void *data)
 {
     SuperHCPUClass *scc = SUPERH_CPU_CLASS(oc);
 
@@ -282,7 +282,7 @@ static const TCGCPUOps superh_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void superh_cpu_class_init(ObjectClass *oc, void *data)
+static void superh_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/sparc/cpu.c b/target/sparc/cpu.c
index 174b76f762..981aa86e0e 100644
--- a/target/sparc/cpu.c
+++ b/target/sparc/cpu.c
@@ -1042,7 +1042,7 @@ static const TCGCPUOps sparc_tcg_ops = {
 };
 #endif /* CONFIG_TCG */
 
-static void sparc_cpu_class_init(ObjectClass *oc, void *data)
+static void sparc_cpu_class_init(ObjectClass *oc, const void *data)
 {
     SPARCCPUClass *scc = SPARC_CPU_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
@@ -1091,7 +1091,7 @@ static const TypeInfo sparc_cpu_type_info = {
     .class_init = sparc_cpu_class_init,
 };
 
-static void sparc_cpu_cpudef_class_init(ObjectClass *oc, void *data)
+static void sparc_cpu_cpudef_class_init(ObjectClass *oc, const void *data)
 {
     SPARCCPUClass *scc = SPARC_CPU_CLASS(oc);
     scc->cpu_def = data;
diff --git a/target/tricore/cpu.c b/target/tricore/cpu.c
index a4f93e7d91..098cd06c54 100644
--- a/target/tricore/cpu.c
+++ b/target/tricore/cpu.c
@@ -185,7 +185,7 @@ static const TCGCPUOps tricore_tcg_ops = {
     .cpu_exec_halt = tricore_cpu_has_work,
 };
 
-static void tricore_cpu_class_init(ObjectClass *c, void *data)
+static void tricore_cpu_class_init(ObjectClass *c, const void *data)
 {
     TriCoreCPUClass *mcc = TRICORE_CPU_CLASS(c);
     CPUClass *cc = CPU_CLASS(c);
diff --git a/target/xtensa/cpu.c b/target/xtensa/cpu.c
index 971e67ad97..27d6e40195 100644
--- a/target/xtensa/cpu.c
+++ b/target/xtensa/cpu.c
@@ -253,7 +253,7 @@ static const TCGCPUOps xtensa_tcg_ops = {
 #endif /* !CONFIG_USER_ONLY */
 };
 
-static void xtensa_cpu_class_init(ObjectClass *oc, void *data)
+static void xtensa_cpu_class_init(ObjectClass *oc, const void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
     CPUClass *cc = CPU_CLASS(oc);
diff --git a/target/xtensa/helper.c b/target/xtensa/helper.c
index d02d16f9ec..0459787981 100644
--- a/target/xtensa/helper.c
+++ b/target/xtensa/helper.c
@@ -170,7 +170,7 @@ static void xtensa_finalize_config(XtensaConfig *config)
     }
 }
 
-static void xtensa_core_class_init(ObjectClass *oc, void *data)
+static void xtensa_core_class_init(ObjectClass *oc, const void *data)
 {
     CPUClass *cc = CPU_CLASS(oc);
     XtensaCPUClass *xcc = XTENSA_CPU_CLASS(oc);