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cpu: Move CPUClass::vmsd to SysemuCPUOps 

Migration is specific to system emulation.

- Move the CPUClass::vmsd field to SysemuCPUOps,
- restrict VMSTATE_CPU() macro to sysemu,
- vmstate_dummy is now unused, remove it.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-16-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2021-05-17 12:51:32 +02:00 committed by Richard Henderson
parent 8b80bd28a5
commit feece4d070
12 changed files with 22 additions and 25 deletions
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15
cpu.c
View File

@ -128,7 +128,9 @@ const VMStateDescription vmstate_cpu_common = {
void cpu_exec_realizefn(CPUState *cpu, Error **errp)
{
#ifndef CONFIG_USER_ONLY
CPUClass *cc = CPU_GET_CLASS(cpu);
#endif
cpu_list_add(cpu);
if (!accel_cpu_realizefn(cpu, errp)) {
@ -144,26 +146,23 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp)
#ifdef CONFIG_USER_ONLY
assert(qdev_get_vmsd(DEVICE(cpu)) == NULL ||
qdev_get_vmsd(DEVICE(cpu))->unmigratable);
assert(cc->legacy_vmsd == NULL);
#else
if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu);
}
if (cc->legacy_vmsd != NULL) {
vmstate_register(NULL, cpu->cpu_index, cc->legacy_vmsd, cpu);
if (cc->sysemu_ops->legacy_vmsd != NULL) {
vmstate_register(NULL, cpu->cpu_index, cc->sysemu_ops->legacy_vmsd, cpu);
}
#endif /* CONFIG_USER_ONLY */
}
void cpu_exec_unrealizefn(CPUState *cpu)
{
#ifndef CONFIG_USER_ONLY
CPUClass *cc = CPU_GET_CLASS(cpu);
#ifdef CONFIG_USER_ONLY
assert(cc->legacy_vmsd == NULL);
#else
if (cc->legacy_vmsd != NULL) {
vmstate_unregister(NULL, cc->legacy_vmsd, cpu);
if (cc->sysemu_ops->legacy_vmsd != NULL) {
vmstate_unregister(NULL, cc->sysemu_ops->legacy_vmsd, cpu);
}
if (qdev_get_vmsd(DEVICE(cpu)) == NULL) {
vmstate_unregister(NULL, &vmstate_cpu_common, cpu);

8
include/hw/core/cpu.h
View File

@ -125,8 +125,6 @@ struct SysemuCPUOps;
* 32-bit VM coredump.
* @write_elf32_qemunote: Callback for writing a CPU- and QEMU-specific ELF
* note to a 32-bit VM coredump.
* @legacy_vmsd: Legacy state description for migration.
* Do not use in new targets, use #DeviceClass::vmsd instead.
* @gdb_num_core_regs: Number of core registers accessible to GDB.
* @gdb_core_xml_file: File name for core registers GDB XML description.
* @gdb_stop_before_watchpoint: Indicates whether GDB expects the CPU to stop
@ -181,7 +179,6 @@ struct CPUClass {
int (*write_elf32_qemunote)(WriteCoreDumpFunction f, CPUState *cpu,
void *opaque);
const VMStateDescription *legacy_vmsd;
const char *gdb_core_xml_file;
gchar * (*gdb_arch_name)(CPUState *cpu);
const char * (*gdb_get_dynamic_xml)(CPUState *cpu, const char *xmlname);
@ -1065,10 +1062,8 @@ bool target_words_bigendian(void);
#ifdef NEED_CPU_H
#ifdef CONFIG_SOFTMMU
extern const VMStateDescription vmstate_cpu_common;
#else
#define vmstate_cpu_common vmstate_dummy
#endif
#define VMSTATE_CPU() { \
.name = "parent_obj", \
@ -1077,6 +1072,7 @@ extern const VMStateDescription vmstate_cpu_common;
.flags = VMS_STRUCT, \
.offset = 0, \
}
#endif /* CONFIG_SOFTMMU */
#endif /* NEED_CPU_H */

6
include/hw/core/sysemu-cpu-ops.h
View File

@ -16,6 +16,12 @@
* struct SysemuCPUOps: System operations specific to a CPU class
*/
typedef struct SysemuCPUOps {
/**
* @legacy_vmsd: Legacy state for migration.
* Do not use in new targets, use #DeviceClass::vmsd instead.
*/
const VMStateDescription *legacy_vmsd;
} SysemuCPUOps;
#endif /* SYSEMU_CPU_OPS_H */

2
include/migration/vmstate.h
View File

@ -194,8 +194,6 @@ struct VMStateDescription {
const VMStateDescription **subsections;
};
extern const VMStateDescription vmstate_dummy;
extern const VMStateInfo vmstate_info_bool;
extern const VMStateInfo vmstate_info_int8;

2
stubs/vmstate.c
View File

@ -1,8 +1,6 @@
#include "qemu/osdep.h"
#include "migration/vmstate.h"
const VMStateDescription vmstate_dummy = {};
int vmstate_register_with_alias_id(VMStateIf *obj,
uint32_t instance_id,
const VMStateDescription *vmsd,

2
target/arm/cpu.c
View File

@ -1948,6 +1948,7 @@ static gchar *arm_gdb_arch_name(CPUState *cs)
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps arm_sysemu_ops = {
.legacy_vmsd = &vmstate_arm_cpu,
};
#endif
@ -1990,7 +1991,6 @@ static void arm_cpu_class_init(ObjectClass *oc, void *data)
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_attrs_debug = arm_cpu_get_phys_page_attrs_debug;
cc->asidx_from_attrs = arm_asidx_from_attrs;
cc->legacy_vmsd = &vmstate_arm_cpu;
cc->virtio_is_big_endian = arm_cpu_virtio_is_big_endian;
cc->write_elf64_note = arm_cpu_write_elf64_note;
cc->write_elf32_note = arm_cpu_write_elf32_note;

2
target/i386/cpu.c
View File

@ -6718,6 +6718,7 @@ static Property x86_cpu_properties[] = {
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps i386_sysemu_ops = {
.legacy_vmsd = &vmstate_x86_cpu,
};
#endif
@ -6756,7 +6757,6 @@ static void x86_cpu_common_class_init(ObjectClass *oc, void *data)
cc->write_elf64_qemunote = x86_cpu_write_elf64_qemunote;
cc->write_elf32_note = x86_cpu_write_elf32_note;
cc->write_elf32_qemunote = x86_cpu_write_elf32_qemunote;
cc->legacy_vmsd = &vmstate_x86_cpu;
cc->sysemu_ops = &i386_sysemu_ops;
#endif /* !CONFIG_USER_ONLY */

2
target/mips/cpu.c
View File

@ -525,6 +525,7 @@ static Property mips_cpu_properties[] = {
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps mips_sysemu_ops = {
.legacy_vmsd = &vmstate_mips_cpu,
};
#endif
@ -568,7 +569,6 @@ static void mips_cpu_class_init(ObjectClass *c, void *data)
cc->gdb_write_register = mips_cpu_gdb_write_register;
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = mips_cpu_get_phys_page_debug;
cc->legacy_vmsd = &vmstate_mips_cpu;
cc->sysemu_ops = &mips_sysemu_ops;
#endif
cc->disas_set_info = mips_cpu_disas_set_info;

2
target/ppc/cpu_init.c
View File

@ -9267,6 +9267,7 @@ static Property ppc_cpu_properties[] = {
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps ppc_sysemu_ops = {
.legacy_vmsd = &vmstate_ppc_cpu,
};
#endif
@ -9312,7 +9313,6 @@ static void ppc_cpu_class_init(ObjectClass *oc, void *data)
cc->gdb_write_register = ppc_cpu_gdb_write_register;
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = ppc_cpu_get_phys_page_debug;
cc->legacy_vmsd = &vmstate_ppc_cpu;
cc->sysemu_ops = &ppc_sysemu_ops;
#endif
#if defined(CONFIG_SOFTMMU)

2
target/riscv/cpu.c
View File

@ -600,6 +600,7 @@ static const char *riscv_gdb_get_dynamic_xml(CPUState *cs, const char *xmlname)
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps riscv_sysemu_ops = {
.legacy_vmsd = &vmstate_riscv_cpu,
};
#endif
@ -645,7 +646,6 @@ static void riscv_cpu_class_init(ObjectClass *c, void *data)
cc->disas_set_info = riscv_cpu_disas_set_info;
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = riscv_cpu_get_phys_page_debug;
cc->legacy_vmsd = &vmstate_riscv_cpu;
cc->sysemu_ops = &riscv_sysemu_ops;
cc->write_elf64_note = riscv_cpu_write_elf64_note;
cc->write_elf32_note = riscv_cpu_write_elf32_note;

2
target/s390x/cpu.c
View File

@ -480,6 +480,7 @@ static void s390_cpu_reset_full(DeviceState *dev)
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps s390_sysemu_ops = {
.legacy_vmsd = &vmstate_s390_cpu,
};
#endif
@ -523,7 +524,6 @@ static void s390_cpu_class_init(ObjectClass *oc, void *data)
cc->gdb_write_register = s390_cpu_gdb_write_register;
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = s390_cpu_get_phys_page_debug;
cc->legacy_vmsd = &vmstate_s390_cpu;
cc->get_crash_info = s390_cpu_get_crash_info;
cc->write_elf64_note = s390_cpu_write_elf64_note;
cc->sysemu_ops = &s390_sysemu_ops;

2
target/sparc/cpu.c
View File

@ -852,6 +852,7 @@ static Property sparc_cpu_properties[] = {
#include "hw/core/sysemu-cpu-ops.h"
static const struct SysemuCPUOps sparc_sysemu_ops = {
.legacy_vmsd = &vmstate_sparc_cpu,
};
#endif
@ -896,7 +897,6 @@ static void sparc_cpu_class_init(ObjectClass *oc, void *data)
cc->gdb_write_register = sparc_cpu_gdb_write_register;
#ifndef CONFIG_USER_ONLY
cc->get_phys_page_debug = sparc_cpu_get_phys_page_debug;
cc->legacy_vmsd = &vmstate_sparc_cpu;
cc->sysemu_ops = &sparc_sysemu_ops;
#endif
cc->disas_set_info = cpu_sparc_disas_set_info;