diff options
| -rw-r--r-- | accel/tcg/cpu-exec.c | 8 | ||||
| -rw-r--r-- | accel/tcg/translate-all.c | 16 | ||||
| -rw-r--r-- | cpu.c | 10 |
3 files changed, 21 insertions, 13 deletions
diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 82b06c1824..356fe348de 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -1052,23 +1052,25 @@ void tcg_exec_realizefn(CPUState *cpu, Error **errp) cc->tcg_ops->initialize(); tcg_target_initialized = true; } - tlb_init(cpu); - qemu_plugin_vcpu_init_hook(cpu); + cpu->tb_jmp_cache = g_new0(CPUJumpCache, 1); + tlb_init(cpu); #ifndef CONFIG_USER_ONLY tcg_iommu_init_notifier_list(cpu); #endif /* !CONFIG_USER_ONLY */ + /* qemu_plugin_vcpu_init_hook delayed until cpu_index assigned. */ } /* undo the initializations in reverse order */ void tcg_exec_unrealizefn(CPUState *cpu) { + qemu_plugin_vcpu_exit_hook(cpu); #ifndef CONFIG_USER_ONLY tcg_iommu_free_notifier_list(cpu); #endif /* !CONFIG_USER_ONLY */ - qemu_plugin_vcpu_exit_hook(cpu); tlb_destroy(cpu); + g_free(cpu->tb_jmp_cache); } #ifndef CONFIG_USER_ONLY diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 0089578f8f..921944a5ab 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1580,15 +1580,13 @@ void tcg_flush_jmp_cache(CPUState *cpu) { CPUJumpCache *jc = cpu->tb_jmp_cache; - if (likely(jc)) { - for (int i = 0; i < TB_JMP_CACHE_SIZE; i++) { - qatomic_set(&jc->array[i].tb, NULL); - } - } else { - /* This should happen once during realize, and thus never race. */ - jc = g_new0(CPUJumpCache, 1); - jc = qatomic_xchg(&cpu->tb_jmp_cache, jc); - assert(jc == NULL); + /* During early initialization, the cache may not yet be allocated. */ + if (unlikely(jc == NULL)) { + return; + } + + for (int i = 0; i < TB_JMP_CACHE_SIZE; i++) { + qatomic_set(&jc->array[i].tb, NULL); } } @@ -134,15 +134,23 @@ void cpu_exec_realizefn(CPUState *cpu, Error **errp) /* cache the cpu class for the hotpath */ cpu->cc = CPU_GET_CLASS(cpu); - cpu_list_add(cpu); if (!accel_cpu_realizefn(cpu, errp)) { return; } + /* NB: errp parameter is unused currently */ if (tcg_enabled()) { tcg_exec_realizefn(cpu, errp); } + /* Wait until cpu initialization complete before exposing cpu. */ + cpu_list_add(cpu); + + /* Plugin initialization must wait until cpu_index assigned. */ + if (tcg_enabled()) { + qemu_plugin_vcpu_init_hook(cpu); + } + #ifdef CONFIG_USER_ONLY assert(qdev_get_vmsd(DEVICE(cpu)) == NULL || qdev_get_vmsd(DEVICE(cpu))->unmigratable); |