]> Git Repo - qemu.git/blob - qom/cpu.c
cpu: Resume CPU from DeviceClass::realize() if hot-plugged
[qemu.git] / qom / cpu.c
1 /*
2  * QEMU CPU model
3  *
4  * Copyright (c) 2012 SUSE LINUX Products GmbH
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, see
18  * <http://www.gnu.org/licenses/gpl-2.0.html>
19  */
20
21 #include "qom/cpu.h"
22 #include "qemu-common.h"
23 #include "sysemu/kvm.h"
24
25 void cpu_reset_interrupt(CPUState *cpu, int mask)
26 {
27     cpu->interrupt_request &= ~mask;
28 }
29
30 void cpu_reset(CPUState *cpu)
31 {
32     CPUClass *klass = CPU_GET_CLASS(cpu);
33
34     if (klass->reset != NULL) {
35         (*klass->reset)(cpu);
36     }
37 }
38
39 static void cpu_common_reset(CPUState *cpu)
40 {
41     cpu->exit_request = 0;
42     cpu->interrupt_request = 0;
43     cpu->current_tb = NULL;
44     cpu->halted = 0;
45 }
46
47 ObjectClass *cpu_class_by_name(const char *typename, const char *cpu_model)
48 {
49     CPUClass *cc = CPU_CLASS(object_class_by_name(typename));
50
51     return cc->class_by_name(cpu_model);
52 }
53
54 static ObjectClass *cpu_common_class_by_name(const char *cpu_model)
55 {
56     return NULL;
57 }
58
59 static void cpu_common_realizefn(DeviceState *dev, Error **errp)
60 {
61     CPUState *cpu = CPU(dev);
62
63     if (dev->hotplugged) {
64         cpu_synchronize_post_init(cpu);
65         cpu_resume(cpu);
66     }
67 }
68
69 static void cpu_class_init(ObjectClass *klass, void *data)
70 {
71     DeviceClass *dc = DEVICE_CLASS(klass);
72     CPUClass *k = CPU_CLASS(klass);
73
74     k->class_by_name = cpu_common_class_by_name;
75     k->reset = cpu_common_reset;
76     dc->realize = cpu_common_realizefn;
77     dc->no_user = 1;
78 }
79
80 static const TypeInfo cpu_type_info = {
81     .name = TYPE_CPU,
82     .parent = TYPE_DEVICE,
83     .instance_size = sizeof(CPUState),
84     .abstract = true,
85     .class_size = sizeof(CPUClass),
86     .class_init = cpu_class_init,
87 };
88
89 static void cpu_register_types(void)
90 {
91     type_register_static(&cpu_type_info);
92 }
93
94 type_init(cpu_register_types)
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