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vl: extract various command line desugaring snippets to a new function 

Keep the machine initialization sequence free of miscellaneous command
line parsing actions.

The only difference is that preallocation will always be done with one
thread if -smp is not provided; previously it was using mc->default_cpus,
which is almost always 1 anyway.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2020-10-21 10:21:22 -04:00
parent 90285ec8bb
commit 4d2c17b0ef
1 changed files with 22 additions and 18 deletions
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40
softmmu/vl.c
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@ -126,6 +126,7 @@ static const char *boot_once;
static const char *incoming;
static const char *loadvm;
enum vga_retrace_method vga_retrace_method = VGA_RETRACE_DUMB;
static int mem_prealloc; /* force preallocation of physical target memory */
int display_opengl;
const char* keyboard_layout = NULL;
static ram_addr_t ram_size;
@ -158,7 +159,7 @@ int fd_bootchk = 1;
static int no_reboot;
int no_shutdown = 0;
int graphic_rotate = 0;
const char *watchdog;
static const char *watchdog;
QEMUOptionRom option_rom[MAX_OPTION_ROMS];
int nb_option_roms;
int old_param = 0;
@ -2914,6 +2915,25 @@ static void qemu_validate_options(void)
#endif
}
static void qemu_process_sugar_options(void)
{
if (mem_prealloc) {
char *val;
val = g_strdup_printf("%d",
(uint32_t) qemu_opt_get_number(qemu_find_opts_singleton("smp-opts"), "cpus", 1));
object_register_sugar_prop("memory-backend", "prealloc-threads", val);
g_free(val);
object_register_sugar_prop("memory-backend", "prealloc", "on");
}
if (watchdog) {
int i = select_watchdog(watchdog);
if (i > 0)
exit (i == 1 ? 1 : 0);
}
}
static void qemu_process_early_options(void)
{
char **dirs;
@ -3175,7 +3195,6 @@ static void qemu_machine_creation_done(void)
void qemu_init(int argc, char **argv, char **envp)
{
int i;
int snapshot = 0;
QemuOpts *opts, *machine_opts;
QemuOpts *icount_opts = NULL, *accel_opts = NULL;
@ -3194,7 +3213,6 @@ void qemu_init(int argc, char **argv, char **envp)
bool have_custom_ram_size;
BlockdevOptionsQueue bdo_queue = QSIMPLEQ_HEAD_INITIALIZER(bdo_queue);
QemuPluginList plugin_list = QTAILQ_HEAD_INITIALIZER(plugin_list);
int mem_prealloc = 0; /* force preallocation of physical target memory */
qemu_add_opts(&qemu_drive_opts);
qemu_add_drive_opts(&qemu_legacy_drive_opts);
@ -4106,6 +4124,7 @@ void qemu_init(int argc, char **argv, char **envp)
loc_set_none();
qemu_validate_options();
qemu_process_sugar_options();
/*
* These options affect everything else and should be processed
@ -4159,15 +4178,6 @@ void qemu_init(int argc, char **argv, char **envp)
machine_smp_parse(current_machine,
qemu_opts_find(qemu_find_opts("smp-opts"), NULL), &error_fatal);
if (mem_prealloc) {
char *val;
val = g_strdup_printf("%d", current_machine->smp.cpus);
object_register_sugar_prop("memory-backend", "prealloc-threads", val);
g_free(val);
object_register_sugar_prop("memory-backend", "prealloc", "on");
}
/*
* Get the default machine options from the machine if it is not already
* specified either by the configuration file or by the command line.
@ -4426,12 +4436,6 @@ void qemu_init(int argc, char **argv, char **envp)
select_vgahw(machine_class, vga_model);
}
if (watchdog) {
i = select_watchdog(watchdog);
if (i > 0)
exit (i == 1 ? 1 : 0);
}
/* This checkpoint is required by replay to separate prior clock
reading from the other reads, because timer polling functions query
clock values from the log. */