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vl: remove separate preconfig main_loop

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Move post-preconfig initialization to the x-exit-preconfig.  If preconfig
is not requested, just exit preconfig mode immediately with the QMP
command.

As a result, the preconfig loop will run with accel_setup_post
and os_setup_post restrictions (xen_restrict, chroot, etc.)
already done.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-10-27 08:44:23 -04:00
parent 164dafd174
commit b4e1a34211
3 changed files with 41 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
include/sysemu/runstate.h
View File

@ -41,7 +41,6 @@ typedef enum WakeupReason {
QEMU_WAKEUP_REASON_OTHER,
} WakeupReason;
void qemu_exit_preconfig_request(void);
void qemu_system_reset_request(ShutdownCause reason);
void qemu_system_suspend_request(void);
void qemu_register_suspend_notifier(Notifier *notifier);

9
monitor/qmp-cmds.c
View File

@ -102,15 +102,6 @@ void qmp_system_powerdown(Error **errp)
qemu_system_powerdown_request();
}
void qmp_x_exit_preconfig(Error **errp)
{
if (qdev_hotplug) {
error_setg(errp, "The command is permitted only before machine initialization");
return;
}
qemu_exit_preconfig_request();
}
void qmp_cont(Error **errp)
{
BlockBackend *blk;

95
softmmu/vl.c
View File

@ -1151,7 +1151,6 @@ static pid_t shutdown_pid;
static int powerdown_requested;
static int debug_requested;
static int suspend_requested;
static bool preconfig_exit_requested = true;
static WakeupReason wakeup_reason;
static NotifierList powerdown_notifiers =
NOTIFIER_LIST_INITIALIZER(powerdown_notifiers);
@ -1238,11 +1237,6 @@ static int qemu_debug_requested(void)
return r;
}
void qemu_exit_preconfig_request(void)
{
preconfig_exit_requested = true;
}
/*
* Reset the VM. Issue an event unless @reason is SHUTDOWN_CAUSE_NONE.
*/
@ -1464,10 +1458,6 @@ static bool main_loop_should_exit(void)
RunState r;
ShutdownCause request;
if (preconfig_exit_requested) {
preconfig_exit_requested = false;
return true;
}
if (qemu_debug_requested()) {
vm_stop(RUN_STATE_DEBUG);
}
@ -3283,6 +3273,43 @@ static void qemu_machine_creation_done(void)
register_global_state();
}
void qmp_x_exit_preconfig(Error **errp)
{
if (qdev_hotplug) {
error_setg(errp, "The command is permitted only before machine initialization");
return;
}
qemu_init_board();
qemu_create_cli_devices();
qemu_machine_creation_done();
if (loadvm) {
Error *local_err = NULL;
if (load_snapshot(loadvm, &local_err) < 0) {
error_report_err(local_err);
autostart = 0;
exit(1);
}
}
if (replay_mode != REPLAY_MODE_NONE) {
replay_vmstate_init();
}
if (incoming) {
Error *local_err = NULL;
if (strcmp(incoming, "defer") != 0) {
qmp_migrate_incoming(incoming, &local_err);
if (local_err) {
error_reportf_err(local_err, "-incoming %s: ", incoming);
exit(1);
}
}
} else if (autostart) {
qmp_cont(NULL);
}
}
void qemu_init(int argc, char **argv, char **envp)
{
QemuOpts *opts;
@ -3847,7 +3874,6 @@ void qemu_init(int argc, char **argv, char **envp)
}
break;
case QEMU_OPTION_preconfig:
preconfig_exit_requested = false;
preconfig_requested = true;
break;
case QEMU_OPTION_enable_kvm:
@ -4272,57 +4298,18 @@ void qemu_init(int argc, char **argv, char **envp)
qemu_resolve_machine_memdev();
parse_numa_opts(current_machine);
if (preconfig_requested) {
qemu_init_displays();
}
/* do monitor/qmp handling at preconfig state if requested */
qemu_main_loop();
qemu_init_board();
qemu_create_cli_devices();
/* initialize displays after all errors have been reported */
if (!preconfig_requested) {
qemu_init_displays();
}
qemu_machine_creation_done();
if (loadvm) {
Error *local_err = NULL;
if (load_snapshot(loadvm, &local_err) < 0) {
error_report_err(local_err);
autostart = 0;
exit(1);
}
}
if (replay_mode != REPLAY_MODE_NONE) {
replay_vmstate_init();
}
if (vmstate_dump_file) {
/* dump and exit */
dump_vmstate_json_to_file(vmstate_dump_file);
exit(0);
}
if (incoming) {
Error *local_err = NULL;
if (strcmp(incoming, "defer") != 0) {
qmp_migrate_incoming(incoming, &local_err);
if (local_err) {
error_reportf_err(local_err, "-incoming %s: ", incoming);
exit(1);
}
}
} else if (autostart) {
qmp_cont(NULL);
}
qemu_init_displays();
if (!preconfig_requested) {
qmp_x_exit_preconfig(&error_fatal);
}
accel_setup_post(current_machine);
os_setup_post();
return;
}
void qemu_cleanup(void)