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vl: initialize displays before preconfig loop

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Displays should be available before the monitor starts, so that
it is possible to use the graphical console to interact with
the monitor itself.

This patch is quite ugly, but all this is temporary.  The double
call to qemu_init_displays will go away as soon we can unify machine
initialization between the preconfig and "normal" flows, and so will
the preconfig_exit_requested variable (that is only preconfig_requested
remains).

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 04:07:30 -04:00
parent b24986e784
commit 7691bdef69
1 changed files with 36 additions and 21 deletions
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57
softmmu/vl.c
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@ -137,6 +137,7 @@ static ram_addr_t maxram_size;
static uint64_t ram_slots;
static int display_remote;
static int snapshot;
static bool preconfig_requested;
static QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
static BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
static bool nographic = false;
@ -3223,12 +3224,12 @@ static void qemu_validate_options(void)
}
}
if (loadvm && !preconfig_exit_requested) {
if (loadvm && preconfig_requested) {
error_report("'preconfig' and 'loadvm' options are "
"mutually exclusive");
exit(EXIT_FAILURE);
}
if (incoming && !preconfig_exit_requested) {
if (incoming && preconfig_requested) {
error_report("'preconfig' and 'incoming' options are "
"mutually exclusive");
exit(EXIT_FAILURE);
@ -3392,6 +3393,28 @@ static void qemu_init_subsystems(void)
socket_init();
}
static void qemu_init_displays(void)
{
DisplayState *ds;
/* init local displays */
ds = init_displaystate();
qemu_display_init(ds, &dpy);
/* must be after terminal init, SDL library changes signal handlers */
os_setup_signal_handling();
/* init remote displays */
#ifdef CONFIG_VNC
qemu_opts_foreach(qemu_find_opts("vnc"),
vnc_init_func, NULL, &error_fatal);
#endif
if (using_spice) {
qemu_spice.display_init();
}
}
/*
* Called after leaving preconfig state. From here on runstate is
* RUN_STATE_PRELAUNCH or RUN_STATE_INMIGRATE.
@ -3450,8 +3473,6 @@ static void qemu_create_cli_devices(void)
static void qemu_machine_creation_done(void)
{
DisplayState *ds;
cpu_synchronize_all_post_init();
/* Did we create any drives that we failed to create a device for? */
@ -3474,23 +3495,6 @@ static void qemu_machine_creation_done(void)
qemu_register_reset(restore_boot_order, g_strdup(boot_order));
}
/* init local displays */
ds = init_displaystate();
qemu_display_init(ds, &dpy);
/* must be after terminal init, SDL library changes signal handlers */
os_setup_signal_handling();
/* init remote displays */
#ifdef CONFIG_VNC
qemu_opts_foreach(qemu_find_opts("vnc"),
vnc_init_func, NULL, &error_fatal);
#endif
if (using_spice) {
qemu_spice.display_init();
}
if (foreach_device_config(DEV_GDB, gdbserver_start) < 0) {
exit(1);
}
@ -4090,6 +4094,7 @@ 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:
olist = qemu_find_opts("machine");
@ -4513,11 +4518,21 @@ 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) {