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qdev-monitor: Check sysbus device type before creating it

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Add an early check to test if the requested sysbus device type
is allowed by the current machine before creating the device. This
impacts both -device cli option and device_add qmp command.

Before this patch, the check was done well after the device has
been created (in a machine init done notifier). We can now report
the error right away.

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20211029142258.484907-3-damien.hedde@greensocs.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
This commit is contained in:
Damien Hedde 2021-10-29 16:22:57 +02:00 • committed by Philippe Mathieu-Daudé
parent b5fdf4102f
commit 312e1b1f3e
1 changed files with 11 additions and 0 deletions
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11
softmmu/qdev-monitor.c
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@ -42,6 +42,7 @@
#include "qemu/cutils.h"
#include "hw/qdev-properties.h"
#include "hw/clock.h"
#include "hw/boards.h"
/*
* Aliases were a bad idea from the start. Let's keep them
@ -254,6 +255,16 @@ static DeviceClass *qdev_get_device_class(const char **driver, Error **errp)
return NULL;
}
if (object_class_dynamic_cast(oc, TYPE_SYS_BUS_DEVICE)) {
/* sysbus devices need to be allowed by the machine */
MachineClass *mc = MACHINE_CLASS(object_get_class(qdev_get_machine()));
if (!device_type_is_dynamic_sysbus(mc, *driver)) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver",
"a dynamic sysbus device type for the machine");
return NULL;
}
}
return dc;
}