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system/vl: Filter machine list available for a particular target binary

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Binaries can register a QOM type to filter their machines
by filling their TargetInfo::machine_typename field.

This can be used by example by main() -> machine_help_func()
to filter the machines list.

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2025-03-23 22:46:34 +01:00 • committed by Richard Henderson
parent 5e5a9aea79
commit 28502121be
5 changed files with 19 additions and 1 deletions
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3
system/vl.c
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@ -27,6 +27,7 @@
#include "qemu/datadir.h"
#include "qemu/units.h"
#include "qemu/module.h"
#include "qemu/target-info.h"
#include "exec/cpu-common.h"
#include "exec/page-vary.h"
#include "hw/qdev-properties.h"
@ -1564,7 +1565,7 @@ static void machine_help_func(const QDict *qdict)
GSList *el;
const char *type = qdict_get_try_str(qdict, "type");
machines = object_class_get_list(TYPE_MACHINE, false);
machines = object_class_get_list(target_machine_typename(), false);
if (type) {
ObjectClass *machine_class = OBJECT_CLASS(find_machine(type, machines));
if (machine_class) {