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git.proxmox.com Git - mirror_qemu.git/blob - include/qom/cpu.h
4 * Copyright (c) 2012 SUSE LINUX Products GmbH
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.
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.
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>
23 #include "hw/qdev-core.h"
24 #include "qemu/thread.h"
28 * @section_id: QEMU-cpu
30 * @short_description: Base class for all CPUs
33 #define TYPE_CPU "cpu"
35 #define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU)
36 #define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
37 #define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
39 typedef struct CPUState CPUState
;
43 * @reset: Callback to reset the #CPUState to its initial state.
45 * Represents a CPU family or model.
47 typedef struct CPUClass
{
49 DeviceClass parent_class
;
52 void (*reset
)(CPUState
*cpu
);
60 * @cpu_index: CPU index (informative).
61 * @nr_cores: Number of cores within this CPU package.
62 * @nr_threads: Number of threads within this CPU.
63 * @numa_node: NUMA node this CPU is belonging to.
64 * @created: Indicates whether the CPU thread has been successfully created.
65 * @stop: Indicates a pending stop request.
66 * @stopped: Indicates the CPU has been artificially stopped.
67 * @kvm_fd: vCPU file descriptor for KVM.
69 * State of one CPU core or thread.
73 DeviceState parent_obj
;
80 struct QemuThread
*thread
;
85 struct QemuCond
*halt_cond
;
86 struct qemu_work_item
*queued_work_first
, *queued_work_last
;
92 #if !defined(CONFIG_USER_ONLY)
96 struct KVMState
*kvm_state
;
97 struct kvm_run
*kvm_run
;
99 /* TODO Move common fields from CPUArchState here. */
100 int cpu_index
; /* used by alpha TCG */
106 * @cpu: The CPU whose state is to be reset.
108 void cpu_reset(CPUState
*cpu
);
112 * @cpu: The vCPU to check.
114 * Checks whether the CPU has work to do.
116 * Returns: %true if the CPU has work, %false otherwise.
118 bool qemu_cpu_has_work(CPUState
*cpu
);
122 * @cpu: The vCPU to check against.
124 * Checks whether the caller is executing on the vCPU thread.
126 * Returns: %true if called from @cpu's thread, %false otherwise.
128 bool qemu_cpu_is_self(CPUState
*cpu
);
132 * @cpu: The vCPU to kick.
134 * Kicks @cpu's thread.
136 void qemu_cpu_kick(CPUState
*cpu
);
140 * @cpu: The CPU to check.
142 * Checks whether the CPU is stopped.
144 * Returns: %true if run state is not running or if artificially stopped;
147 bool cpu_is_stopped(CPUState
*cpu
);
151 * @cpu: The vCPU to run on.
152 * @func: The function to be executed.
153 * @data: Data to pass to the function.
155 * Schedules the function @func for execution on the vCPU @cpu.
157 void run_on_cpu(CPUState
*cpu
, void (*func
)(void *data
), void *data
);