From ca05578fc80f4253ed19f4c4128a4cbd5b83f0b5 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 23 Jan 2025 19:56:20 +0100 Subject: cpus: Register VMState per user / system emulation MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Simplify cpu-target.c by extracting mixed vmstate code into the cpu_vmstate_register() / cpu_vmstate_unregister() helpers, implemented in cpu-user.c and cpu-system.c. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-Id: <20250123234415.59850-20-philmd@linaro.org> --- cpu-target.c | 121 +---------------------------------------------------------- 1 file changed, 2 insertions(+), 119 deletions(-) (limited to 'cpu-target.c') diff --git a/cpu-target.c b/cpu-target.c index b6e66d5ac0..bc9c537c57 100644 --- a/cpu-target.c +++ b/cpu-target.c @@ -21,115 +21,17 @@ #include "qapi/error.h" #include "qemu/error-report.h" #include "qemu/qemu-print.h" -#include "migration/vmstate.h" -#ifndef CONFIG_USER_ONLY -#include "hw/core/sysemu-cpu-ops.h" -#endif #include "system/accel-ops.h" #include "system/cpus.h" -#include "system/tcg.h" #include "exec/tswap.h" #include "exec/replay-core.h" #include "exec/cpu-common.h" -#include "exec/cputlb.h" -#include "exec/exec-all.h" -#include "exec/tb-flush.h" #include "exec/log.h" #include "accel/accel-cpu-target.h" #include "trace/trace-root.h" #include "qemu/accel.h" #include "hw/core/cpu.h" -#ifndef CONFIG_USER_ONLY -static int cpu_common_post_load(void *opaque, int version_id) -{ - if (tcg_enabled()) { - CPUState *cpu = opaque; - - /* - * 0x01 was CPU_INTERRUPT_EXIT. This line can be removed when the - * version_id is increased. - */ - cpu->interrupt_request &= ~0x01; - - tlb_flush(cpu); - - /* - * loadvm has just updated the content of RAM, bypassing the - * usual mechanisms that ensure we flush TBs for writes to - * memory we've translated code from. So we must flush all TBs, - * which will now be stale. - */ - tb_flush(cpu); - } - - return 0; -} - -static int cpu_common_pre_load(void *opaque) -{ - CPUState *cpu = opaque; - - cpu->exception_index = -1; - - return 0; -} - -static bool cpu_common_exception_index_needed(void *opaque) -{ - CPUState *cpu = opaque; - - return tcg_enabled() && cpu->exception_index != -1; -} - -static const VMStateDescription vmstate_cpu_common_exception_index = { - .name = "cpu_common/exception_index", - .version_id = 1, - .minimum_version_id = 1, - .needed = cpu_common_exception_index_needed, - .fields = (const VMStateField[]) { - VMSTATE_INT32(exception_index, CPUState), - VMSTATE_END_OF_LIST() - } -}; - -static bool cpu_common_crash_occurred_needed(void *opaque) -{ - CPUState *cpu = opaque; - - return cpu->crash_occurred; -} - -static const VMStateDescription vmstate_cpu_common_crash_occurred = { - .name = "cpu_common/crash_occurred", - .version_id = 1, - .minimum_version_id = 1, - .needed = cpu_common_crash_occurred_needed, - .fields = (const VMStateField[]) { - VMSTATE_BOOL(crash_occurred, CPUState), - VMSTATE_END_OF_LIST() - } -}; - -const VMStateDescription vmstate_cpu_common = { - .name = "cpu_common", - .version_id = 1, - .minimum_version_id = 1, - .pre_load = cpu_common_pre_load, - .post_load = cpu_common_post_load, - .fields = (const VMStateField[]) { - VMSTATE_UINT32(halted, CPUState), - VMSTATE_UINT32(interrupt_request, CPUState), - VMSTATE_END_OF_LIST() - }, - .subsections = (const VMStateDescription * const []) { - &vmstate_cpu_common_exception_index, - &vmstate_cpu_common_crash_occurred, - NULL - } -}; -#endif - bool cpu_exec_realizefn(CPUState *cpu, Error **errp) { if (!accel_cpu_common_realize(cpu, errp)) { @@ -139,33 +41,14 @@ bool cpu_exec_realizefn(CPUState *cpu, Error **errp) /* Wait until cpu initialization complete before exposing cpu. */ cpu_list_add(cpu); -#ifdef CONFIG_USER_ONLY - assert(qdev_get_vmsd(DEVICE(cpu)) == NULL || - qdev_get_vmsd(DEVICE(cpu))->unmigratable); -#else - if (qdev_get_vmsd(DEVICE(cpu)) == NULL) { - vmstate_register(NULL, cpu->cpu_index, &vmstate_cpu_common, cpu); - } - if (cpu->cc->sysemu_ops->legacy_vmsd != NULL) { - vmstate_register(NULL, cpu->cpu_index, cpu->cc->sysemu_ops->legacy_vmsd, cpu); - } -#endif /* CONFIG_USER_ONLY */ + cpu_vmstate_register(cpu); return true; } void cpu_exec_unrealizefn(CPUState *cpu) { -#ifndef CONFIG_USER_ONLY - CPUClass *cc = CPU_GET_CLASS(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); - } -#endif + cpu_vmstate_unregister(cpu); cpu_list_remove(cpu); /* -- cgit 1.4.1 From 43610f3184f846da948e8ab9dbc0c5de1e9bde79 Mon Sep 17 00:00:00 2001 From: Philippe Mathieu-Daudé Date: Thu, 23 Jan 2025 13:46:03 +0100 Subject: cpus: Build cpu_exec_[un]realizefn() methods once MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Now that cpu_exec_realizefn() and cpu_exec_unrealizefn() methods don't use any target specific definition anymore, we can move them to cpu-common.c to be able to build them once. Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Richard Henderson Message-Id: <20250123234415.59850-21-philmd@linaro.org> --- cpu-target.c | 29 ----------------------------- hw/core/cpu-common.c | 26 ++++++++++++++++++++++++++ 2 files changed, 26 insertions(+), 29 deletions(-) (limited to 'cpu-target.c') diff --git a/cpu-target.c b/cpu-target.c index bc9c537c57..cae77374b3 100644 --- a/cpu-target.c +++ b/cpu-target.c @@ -25,38 +25,9 @@ #include "system/cpus.h" #include "exec/tswap.h" #include "exec/replay-core.h" -#include "exec/cpu-common.h" #include "exec/log.h" #include "accel/accel-cpu-target.h" #include "trace/trace-root.h" -#include "qemu/accel.h" -#include "hw/core/cpu.h" - -bool cpu_exec_realizefn(CPUState *cpu, Error **errp) -{ - if (!accel_cpu_common_realize(cpu, errp)) { - return false; - } - - /* Wait until cpu initialization complete before exposing cpu. */ - cpu_list_add(cpu); - - cpu_vmstate_register(cpu); - - return true; -} - -void cpu_exec_unrealizefn(CPUState *cpu) -{ - cpu_vmstate_unregister(cpu); - - cpu_list_remove(cpu); - /* - * Now that the vCPU has been removed from the RCU list, we can call - * accel_cpu_common_unrealize, which may free fields using call_rcu. - */ - accel_cpu_common_unrealize(cpu); -} char *cpu_model_from_type(const char *typename) { diff --git a/hw/core/cpu-common.c b/hw/core/cpu-common.c index d5cd227fe6..5671d8d4f5 100644 --- a/hw/core/cpu-common.c +++ b/hw/core/cpu-common.c @@ -193,6 +193,20 @@ static void cpu_common_parse_features(const char *typename, char *features, } } +bool cpu_exec_realizefn(CPUState *cpu, Error **errp) +{ + if (!accel_cpu_common_realize(cpu, errp)) { + return false; + } + + /* Wait until cpu initialization complete before exposing cpu. */ + cpu_list_add(cpu); + + cpu_vmstate_register(cpu); + + return true; +} + static void cpu_common_realizefn(DeviceState *dev, Error **errp) { CPUState *cpu = CPU(dev); @@ -234,6 +248,18 @@ static void cpu_common_unrealizefn(DeviceState *dev) cpu_exec_unrealizefn(cpu); } +void cpu_exec_unrealizefn(CPUState *cpu) +{ + cpu_vmstate_unregister(cpu); + + cpu_list_remove(cpu); + /* + * Now that the vCPU has been removed from the RCU list, we can call + * accel_cpu_common_unrealize, which may free fields using call_rcu. + */ + accel_cpu_common_unrealize(cpu); +} + static void cpu_common_initfn(Object *obj) { CPUState *cpu = CPU(obj); -- cgit 1.4.1