cur_mon really needs to be coroutine-local as soon as we move monitor command handlers to coroutines and let them yield. As a first step, just remove all direct accesses to cur_mon so that we can implement this in the getter function later. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201005155855.256490-4-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
799 lines
18 KiB
C
799 lines
18 KiB
C
/*
|
|
* QEMU System Emulator
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qemu-common.h"
|
|
#include "monitor/monitor.h"
|
|
#include "qapi/error.h"
|
|
#include "qapi/qapi-commands-misc.h"
|
|
#include "qapi/qapi-events-run-state.h"
|
|
#include "qapi/qmp/qerror.h"
|
|
#include "exec/gdbstub.h"
|
|
#include "sysemu/hw_accel.h"
|
|
#include "exec/exec-all.h"
|
|
#include "qemu/thread.h"
|
|
#include "qemu/plugin.h"
|
|
#include "sysemu/cpus.h"
|
|
#include "qemu/guest-random.h"
|
|
#include "hw/nmi.h"
|
|
#include "sysemu/replay.h"
|
|
#include "sysemu/runstate.h"
|
|
#include "sysemu/cpu-timers.h"
|
|
#include "hw/boards.h"
|
|
#include "hw/hw.h"
|
|
|
|
#ifdef CONFIG_LINUX
|
|
|
|
#include <sys/prctl.h>
|
|
|
|
#ifndef PR_MCE_KILL
|
|
#define PR_MCE_KILL 33
|
|
#endif
|
|
|
|
#ifndef PR_MCE_KILL_SET
|
|
#define PR_MCE_KILL_SET 1
|
|
#endif
|
|
|
|
#ifndef PR_MCE_KILL_EARLY
|
|
#define PR_MCE_KILL_EARLY 1
|
|
#endif
|
|
|
|
#endif /* CONFIG_LINUX */
|
|
|
|
static QemuMutex qemu_global_mutex;
|
|
|
|
bool cpu_is_stopped(CPUState *cpu)
|
|
{
|
|
return cpu->stopped || !runstate_is_running();
|
|
}
|
|
|
|
bool cpu_work_list_empty(CPUState *cpu)
|
|
{
|
|
bool ret;
|
|
|
|
qemu_mutex_lock(&cpu->work_mutex);
|
|
ret = QSIMPLEQ_EMPTY(&cpu->work_list);
|
|
qemu_mutex_unlock(&cpu->work_mutex);
|
|
return ret;
|
|
}
|
|
|
|
bool cpu_thread_is_idle(CPUState *cpu)
|
|
{
|
|
if (cpu->stop || !cpu_work_list_empty(cpu)) {
|
|
return false;
|
|
}
|
|
if (cpu_is_stopped(cpu)) {
|
|
return true;
|
|
}
|
|
if (!cpu->halted || cpu_has_work(cpu) ||
|
|
kvm_halt_in_kernel()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool all_cpu_threads_idle(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
if (!cpu_thread_is_idle(cpu)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/***********************************************************/
|
|
void hw_error(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
CPUState *cpu;
|
|
|
|
va_start(ap, fmt);
|
|
fprintf(stderr, "qemu: hardware error: ");
|
|
vfprintf(stderr, fmt, ap);
|
|
fprintf(stderr, "\n");
|
|
CPU_FOREACH(cpu) {
|
|
fprintf(stderr, "CPU #%d:\n", cpu->cpu_index);
|
|
cpu_dump_state(cpu, stderr, CPU_DUMP_FPU);
|
|
}
|
|
va_end(ap);
|
|
abort();
|
|
}
|
|
|
|
/*
|
|
* The chosen accelerator is supposed to register this.
|
|
*/
|
|
static const CpusAccel *cpus_accel;
|
|
|
|
void cpu_synchronize_all_states(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
cpu_synchronize_state(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_all_post_reset(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
cpu_synchronize_post_reset(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_all_post_init(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
cpu_synchronize_post_init(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_all_pre_loadvm(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
cpu_synchronize_pre_loadvm(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_state(CPUState *cpu)
|
|
{
|
|
if (cpus_accel->synchronize_state) {
|
|
cpus_accel->synchronize_state(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_post_reset(CPUState *cpu)
|
|
{
|
|
if (cpus_accel->synchronize_post_reset) {
|
|
cpus_accel->synchronize_post_reset(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_post_init(CPUState *cpu)
|
|
{
|
|
if (cpus_accel->synchronize_post_init) {
|
|
cpus_accel->synchronize_post_init(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_synchronize_pre_loadvm(CPUState *cpu)
|
|
{
|
|
if (cpus_accel->synchronize_pre_loadvm) {
|
|
cpus_accel->synchronize_pre_loadvm(cpu);
|
|
}
|
|
}
|
|
|
|
int64_t cpus_get_virtual_clock(void)
|
|
{
|
|
/*
|
|
* XXX
|
|
*
|
|
* need to check that cpus_accel is not NULL, because qcow2 calls
|
|
* qemu_get_clock_ns(CLOCK_VIRTUAL) without any accel initialized and
|
|
* with ticks disabled in some io-tests:
|
|
* 030 040 041 060 099 120 127 140 156 161 172 181 191 192 195 203 229 249 256 267
|
|
*
|
|
* is this expected?
|
|
*
|
|
* XXX
|
|
*/
|
|
if (cpus_accel && cpus_accel->get_virtual_clock) {
|
|
return cpus_accel->get_virtual_clock();
|
|
}
|
|
return cpu_get_clock();
|
|
}
|
|
|
|
/*
|
|
* return the time elapsed in VM between vm_start and vm_stop. Unless
|
|
* icount is active, cpus_get_elapsed_ticks() uses units of the host CPU cycle
|
|
* counter.
|
|
*/
|
|
int64_t cpus_get_elapsed_ticks(void)
|
|
{
|
|
if (cpus_accel->get_elapsed_ticks) {
|
|
return cpus_accel->get_elapsed_ticks();
|
|
}
|
|
return cpu_get_ticks();
|
|
}
|
|
|
|
static void generic_handle_interrupt(CPUState *cpu, int mask)
|
|
{
|
|
cpu->interrupt_request |= mask;
|
|
|
|
if (!qemu_cpu_is_self(cpu)) {
|
|
qemu_cpu_kick(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_interrupt(CPUState *cpu, int mask)
|
|
{
|
|
if (cpus_accel->handle_interrupt) {
|
|
cpus_accel->handle_interrupt(cpu, mask);
|
|
} else {
|
|
generic_handle_interrupt(cpu, mask);
|
|
}
|
|
}
|
|
|
|
static int do_vm_stop(RunState state, bool send_stop)
|
|
{
|
|
int ret = 0;
|
|
|
|
if (runstate_is_running()) {
|
|
runstate_set(state);
|
|
cpu_disable_ticks();
|
|
pause_all_vcpus();
|
|
vm_state_notify(0, state);
|
|
if (send_stop) {
|
|
qapi_event_send_stop();
|
|
}
|
|
}
|
|
|
|
bdrv_drain_all();
|
|
ret = bdrv_flush_all();
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* Special vm_stop() variant for terminating the process. Historically clients
|
|
* did not expect a QMP STOP event and so we need to retain compatibility.
|
|
*/
|
|
int vm_shutdown(void)
|
|
{
|
|
return do_vm_stop(RUN_STATE_SHUTDOWN, false);
|
|
}
|
|
|
|
bool cpu_can_run(CPUState *cpu)
|
|
{
|
|
if (cpu->stop) {
|
|
return false;
|
|
}
|
|
if (cpu_is_stopped(cpu)) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void cpu_handle_guest_debug(CPUState *cpu)
|
|
{
|
|
if (replay_running_debug()) {
|
|
if (!cpu->singlestep_enabled) {
|
|
/*
|
|
* Report about the breakpoint and
|
|
* make a single step to skip it
|
|
*/
|
|
replay_breakpoint();
|
|
cpu_single_step(cpu, SSTEP_ENABLE);
|
|
} else {
|
|
cpu_single_step(cpu, 0);
|
|
}
|
|
} else {
|
|
gdb_set_stop_cpu(cpu);
|
|
qemu_system_debug_request();
|
|
cpu->stopped = true;
|
|
}
|
|
}
|
|
|
|
#ifdef CONFIG_LINUX
|
|
static void sigbus_reraise(void)
|
|
{
|
|
sigset_t set;
|
|
struct sigaction action;
|
|
|
|
memset(&action, 0, sizeof(action));
|
|
action.sa_handler = SIG_DFL;
|
|
if (!sigaction(SIGBUS, &action, NULL)) {
|
|
raise(SIGBUS);
|
|
sigemptyset(&set);
|
|
sigaddset(&set, SIGBUS);
|
|
pthread_sigmask(SIG_UNBLOCK, &set, NULL);
|
|
}
|
|
perror("Failed to re-raise SIGBUS!\n");
|
|
abort();
|
|
}
|
|
|
|
static void sigbus_handler(int n, siginfo_t *siginfo, void *ctx)
|
|
{
|
|
if (siginfo->si_code != BUS_MCEERR_AO && siginfo->si_code != BUS_MCEERR_AR) {
|
|
sigbus_reraise();
|
|
}
|
|
|
|
if (current_cpu) {
|
|
/* Called asynchronously in VCPU thread. */
|
|
if (kvm_on_sigbus_vcpu(current_cpu, siginfo->si_code, siginfo->si_addr)) {
|
|
sigbus_reraise();
|
|
}
|
|
} else {
|
|
/* Called synchronously (via signalfd) in main thread. */
|
|
if (kvm_on_sigbus(siginfo->si_code, siginfo->si_addr)) {
|
|
sigbus_reraise();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void qemu_init_sigbus(void)
|
|
{
|
|
struct sigaction action;
|
|
|
|
memset(&action, 0, sizeof(action));
|
|
action.sa_flags = SA_SIGINFO;
|
|
action.sa_sigaction = sigbus_handler;
|
|
sigaction(SIGBUS, &action, NULL);
|
|
|
|
prctl(PR_MCE_KILL, PR_MCE_KILL_SET, PR_MCE_KILL_EARLY, 0, 0);
|
|
}
|
|
#else /* !CONFIG_LINUX */
|
|
static void qemu_init_sigbus(void)
|
|
{
|
|
}
|
|
#endif /* !CONFIG_LINUX */
|
|
|
|
static QemuThread io_thread;
|
|
|
|
/* cpu creation */
|
|
static QemuCond qemu_cpu_cond;
|
|
/* system init */
|
|
static QemuCond qemu_pause_cond;
|
|
|
|
void qemu_init_cpu_loop(void)
|
|
{
|
|
qemu_init_sigbus();
|
|
qemu_cond_init(&qemu_cpu_cond);
|
|
qemu_cond_init(&qemu_pause_cond);
|
|
qemu_mutex_init(&qemu_global_mutex);
|
|
|
|
qemu_thread_get_self(&io_thread);
|
|
}
|
|
|
|
void run_on_cpu(CPUState *cpu, run_on_cpu_func func, run_on_cpu_data data)
|
|
{
|
|
do_run_on_cpu(cpu, func, data, &qemu_global_mutex);
|
|
}
|
|
|
|
static void qemu_cpu_stop(CPUState *cpu, bool exit)
|
|
{
|
|
g_assert(qemu_cpu_is_self(cpu));
|
|
cpu->stop = false;
|
|
cpu->stopped = true;
|
|
if (exit) {
|
|
cpu_exit(cpu);
|
|
}
|
|
qemu_cond_broadcast(&qemu_pause_cond);
|
|
}
|
|
|
|
void qemu_wait_io_event_common(CPUState *cpu)
|
|
{
|
|
qatomic_mb_set(&cpu->thread_kicked, false);
|
|
if (cpu->stop) {
|
|
qemu_cpu_stop(cpu, false);
|
|
}
|
|
process_queued_cpu_work(cpu);
|
|
}
|
|
|
|
void qemu_wait_io_event(CPUState *cpu)
|
|
{
|
|
bool slept = false;
|
|
|
|
while (cpu_thread_is_idle(cpu)) {
|
|
if (!slept) {
|
|
slept = true;
|
|
qemu_plugin_vcpu_idle_cb(cpu);
|
|
}
|
|
qemu_cond_wait(cpu->halt_cond, &qemu_global_mutex);
|
|
}
|
|
if (slept) {
|
|
qemu_plugin_vcpu_resume_cb(cpu);
|
|
}
|
|
|
|
#ifdef _WIN32
|
|
/* Eat dummy APC queued by cpus_kick_thread. */
|
|
if (hax_enabled()) {
|
|
SleepEx(0, TRUE);
|
|
}
|
|
#endif
|
|
qemu_wait_io_event_common(cpu);
|
|
}
|
|
|
|
void cpus_kick_thread(CPUState *cpu)
|
|
{
|
|
#ifndef _WIN32
|
|
int err;
|
|
|
|
if (cpu->thread_kicked) {
|
|
return;
|
|
}
|
|
cpu->thread_kicked = true;
|
|
err = pthread_kill(cpu->thread->thread, SIG_IPI);
|
|
if (err && err != ESRCH) {
|
|
fprintf(stderr, "qemu:%s: %s", __func__, strerror(err));
|
|
exit(1);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void qemu_cpu_kick(CPUState *cpu)
|
|
{
|
|
qemu_cond_broadcast(cpu->halt_cond);
|
|
if (cpus_accel->kick_vcpu_thread) {
|
|
cpus_accel->kick_vcpu_thread(cpu);
|
|
} else { /* default */
|
|
cpus_kick_thread(cpu);
|
|
}
|
|
}
|
|
|
|
void qemu_cpu_kick_self(void)
|
|
{
|
|
assert(current_cpu);
|
|
cpus_kick_thread(current_cpu);
|
|
}
|
|
|
|
bool qemu_cpu_is_self(CPUState *cpu)
|
|
{
|
|
return qemu_thread_is_self(cpu->thread);
|
|
}
|
|
|
|
bool qemu_in_vcpu_thread(void)
|
|
{
|
|
return current_cpu && qemu_cpu_is_self(current_cpu);
|
|
}
|
|
|
|
static __thread bool iothread_locked = false;
|
|
|
|
bool qemu_mutex_iothread_locked(void)
|
|
{
|
|
return iothread_locked;
|
|
}
|
|
|
|
/*
|
|
* The BQL is taken from so many places that it is worth profiling the
|
|
* callers directly, instead of funneling them all through a single function.
|
|
*/
|
|
void qemu_mutex_lock_iothread_impl(const char *file, int line)
|
|
{
|
|
QemuMutexLockFunc bql_lock = qatomic_read(&qemu_bql_mutex_lock_func);
|
|
|
|
g_assert(!qemu_mutex_iothread_locked());
|
|
bql_lock(&qemu_global_mutex, file, line);
|
|
iothread_locked = true;
|
|
}
|
|
|
|
void qemu_mutex_unlock_iothread(void)
|
|
{
|
|
g_assert(qemu_mutex_iothread_locked());
|
|
iothread_locked = false;
|
|
qemu_mutex_unlock(&qemu_global_mutex);
|
|
}
|
|
|
|
void qemu_cond_wait_iothread(QemuCond *cond)
|
|
{
|
|
qemu_cond_wait(cond, &qemu_global_mutex);
|
|
}
|
|
|
|
void qemu_cond_timedwait_iothread(QemuCond *cond, int ms)
|
|
{
|
|
qemu_cond_timedwait(cond, &qemu_global_mutex, ms);
|
|
}
|
|
|
|
/* signal CPU creation */
|
|
void cpu_thread_signal_created(CPUState *cpu)
|
|
{
|
|
cpu->created = true;
|
|
qemu_cond_signal(&qemu_cpu_cond);
|
|
}
|
|
|
|
/* signal CPU destruction */
|
|
void cpu_thread_signal_destroyed(CPUState *cpu)
|
|
{
|
|
cpu->created = false;
|
|
qemu_cond_signal(&qemu_cpu_cond);
|
|
}
|
|
|
|
|
|
static bool all_vcpus_paused(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
CPU_FOREACH(cpu) {
|
|
if (!cpu->stopped) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void pause_all_vcpus(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
qemu_clock_enable(QEMU_CLOCK_VIRTUAL, false);
|
|
CPU_FOREACH(cpu) {
|
|
if (qemu_cpu_is_self(cpu)) {
|
|
qemu_cpu_stop(cpu, true);
|
|
} else {
|
|
cpu->stop = true;
|
|
qemu_cpu_kick(cpu);
|
|
}
|
|
}
|
|
|
|
/* We need to drop the replay_lock so any vCPU threads woken up
|
|
* can finish their replay tasks
|
|
*/
|
|
replay_mutex_unlock();
|
|
|
|
while (!all_vcpus_paused()) {
|
|
qemu_cond_wait(&qemu_pause_cond, &qemu_global_mutex);
|
|
CPU_FOREACH(cpu) {
|
|
qemu_cpu_kick(cpu);
|
|
}
|
|
}
|
|
|
|
qemu_mutex_unlock_iothread();
|
|
replay_mutex_lock();
|
|
qemu_mutex_lock_iothread();
|
|
}
|
|
|
|
void cpu_resume(CPUState *cpu)
|
|
{
|
|
cpu->stop = false;
|
|
cpu->stopped = false;
|
|
qemu_cpu_kick(cpu);
|
|
}
|
|
|
|
void resume_all_vcpus(void)
|
|
{
|
|
CPUState *cpu;
|
|
|
|
if (!runstate_is_running()) {
|
|
return;
|
|
}
|
|
|
|
qemu_clock_enable(QEMU_CLOCK_VIRTUAL, true);
|
|
CPU_FOREACH(cpu) {
|
|
cpu_resume(cpu);
|
|
}
|
|
}
|
|
|
|
void cpu_remove_sync(CPUState *cpu)
|
|
{
|
|
cpu->stop = true;
|
|
cpu->unplug = true;
|
|
qemu_cpu_kick(cpu);
|
|
qemu_mutex_unlock_iothread();
|
|
qemu_thread_join(cpu->thread);
|
|
qemu_mutex_lock_iothread();
|
|
}
|
|
|
|
void cpus_register_accel(const CpusAccel *ca)
|
|
{
|
|
assert(ca != NULL);
|
|
assert(ca->create_vcpu_thread != NULL); /* mandatory */
|
|
cpus_accel = ca;
|
|
}
|
|
|
|
void qemu_init_vcpu(CPUState *cpu)
|
|
{
|
|
MachineState *ms = MACHINE(qdev_get_machine());
|
|
|
|
cpu->nr_cores = ms->smp.cores;
|
|
cpu->nr_threads = ms->smp.threads;
|
|
cpu->stopped = true;
|
|
cpu->random_seed = qemu_guest_random_seed_thread_part1();
|
|
|
|
if (!cpu->as) {
|
|
/* If the target cpu hasn't set up any address spaces itself,
|
|
* give it the default one.
|
|
*/
|
|
cpu->num_ases = 1;
|
|
cpu_address_space_init(cpu, 0, "cpu-memory", cpu->memory);
|
|
}
|
|
|
|
/* accelerators all implement the CpusAccel interface */
|
|
g_assert(cpus_accel != NULL && cpus_accel->create_vcpu_thread != NULL);
|
|
cpus_accel->create_vcpu_thread(cpu);
|
|
|
|
while (!cpu->created) {
|
|
qemu_cond_wait(&qemu_cpu_cond, &qemu_global_mutex);
|
|
}
|
|
}
|
|
|
|
void cpu_stop_current(void)
|
|
{
|
|
if (current_cpu) {
|
|
current_cpu->stop = true;
|
|
cpu_exit(current_cpu);
|
|
}
|
|
}
|
|
|
|
int vm_stop(RunState state)
|
|
{
|
|
if (qemu_in_vcpu_thread()) {
|
|
qemu_system_vmstop_request_prepare();
|
|
qemu_system_vmstop_request(state);
|
|
/*
|
|
* FIXME: should not return to device code in case
|
|
* vm_stop() has been requested.
|
|
*/
|
|
cpu_stop_current();
|
|
return 0;
|
|
}
|
|
|
|
return do_vm_stop(state, true);
|
|
}
|
|
|
|
/**
|
|
* Prepare for (re)starting the VM.
|
|
* Returns -1 if the vCPUs are not to be restarted (e.g. if they are already
|
|
* running or in case of an error condition), 0 otherwise.
|
|
*/
|
|
int vm_prepare_start(void)
|
|
{
|
|
RunState requested;
|
|
|
|
qemu_vmstop_requested(&requested);
|
|
if (runstate_is_running() && requested == RUN_STATE__MAX) {
|
|
return -1;
|
|
}
|
|
|
|
/* Ensure that a STOP/RESUME pair of events is emitted if a
|
|
* vmstop request was pending. The BLOCK_IO_ERROR event, for
|
|
* example, according to documentation is always followed by
|
|
* the STOP event.
|
|
*/
|
|
if (runstate_is_running()) {
|
|
qapi_event_send_stop();
|
|
qapi_event_send_resume();
|
|
return -1;
|
|
}
|
|
|
|
/* We are sending this now, but the CPUs will be resumed shortly later */
|
|
qapi_event_send_resume();
|
|
|
|
cpu_enable_ticks();
|
|
runstate_set(RUN_STATE_RUNNING);
|
|
vm_state_notify(1, RUN_STATE_RUNNING);
|
|
return 0;
|
|
}
|
|
|
|
void vm_start(void)
|
|
{
|
|
if (!vm_prepare_start()) {
|
|
resume_all_vcpus();
|
|
}
|
|
}
|
|
|
|
/* does a state transition even if the VM is already stopped,
|
|
current state is forgotten forever */
|
|
int vm_stop_force_state(RunState state)
|
|
{
|
|
if (runstate_is_running()) {
|
|
return vm_stop(state);
|
|
} else {
|
|
runstate_set(state);
|
|
|
|
bdrv_drain_all();
|
|
/* Make sure to return an error if the flush in a previous vm_stop()
|
|
* failed. */
|
|
return bdrv_flush_all();
|
|
}
|
|
}
|
|
|
|
void list_cpus(const char *optarg)
|
|
{
|
|
/* XXX: implement xxx_cpu_list for targets that still miss it */
|
|
#if defined(cpu_list)
|
|
cpu_list();
|
|
#endif
|
|
}
|
|
|
|
void qmp_memsave(int64_t addr, int64_t size, const char *filename,
|
|
bool has_cpu, int64_t cpu_index, Error **errp)
|
|
{
|
|
FILE *f;
|
|
uint32_t l;
|
|
CPUState *cpu;
|
|
uint8_t buf[1024];
|
|
int64_t orig_addr = addr, orig_size = size;
|
|
|
|
if (!has_cpu) {
|
|
cpu_index = 0;
|
|
}
|
|
|
|
cpu = qemu_get_cpu(cpu_index);
|
|
if (cpu == NULL) {
|
|
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
|
|
"a CPU number");
|
|
return;
|
|
}
|
|
|
|
f = fopen(filename, "wb");
|
|
if (!f) {
|
|
error_setg_file_open(errp, errno, filename);
|
|
return;
|
|
}
|
|
|
|
while (size != 0) {
|
|
l = sizeof(buf);
|
|
if (l > size)
|
|
l = size;
|
|
if (cpu_memory_rw_debug(cpu, addr, buf, l, 0) != 0) {
|
|
error_setg(errp, "Invalid addr 0x%016" PRIx64 "/size %" PRId64
|
|
" specified", orig_addr, orig_size);
|
|
goto exit;
|
|
}
|
|
if (fwrite(buf, 1, l, f) != l) {
|
|
error_setg(errp, QERR_IO_ERROR);
|
|
goto exit;
|
|
}
|
|
addr += l;
|
|
size -= l;
|
|
}
|
|
|
|
exit:
|
|
fclose(f);
|
|
}
|
|
|
|
void qmp_pmemsave(int64_t addr, int64_t size, const char *filename,
|
|
Error **errp)
|
|
{
|
|
FILE *f;
|
|
uint32_t l;
|
|
uint8_t buf[1024];
|
|
|
|
f = fopen(filename, "wb");
|
|
if (!f) {
|
|
error_setg_file_open(errp, errno, filename);
|
|
return;
|
|
}
|
|
|
|
while (size != 0) {
|
|
l = sizeof(buf);
|
|
if (l > size)
|
|
l = size;
|
|
cpu_physical_memory_read(addr, buf, l);
|
|
if (fwrite(buf, 1, l, f) != l) {
|
|
error_setg(errp, QERR_IO_ERROR);
|
|
goto exit;
|
|
}
|
|
addr += l;
|
|
size -= l;
|
|
}
|
|
|
|
exit:
|
|
fclose(f);
|
|
}
|
|
|
|
void qmp_inject_nmi(Error **errp)
|
|
{
|
|
nmi_monitor_handle(monitor_get_cpu_index(monitor_cur()), errp);
|
|
}
|
|
|