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hw/acpi: Move QMP command to hw/core/ 

The QERR_ macros are leftovers from the days of "rich" error objects.
We've been trying to reduce their remaining use.

qmp_query_vm_generation_id() in stubs/vmgenid.c is the last user of
QERR_UNSUPPORTED outside qga/.  Unlike the stubs we just dropped, it
is actually reachable, namely when CONFIG_ACPI_VMGENID is off.  It
always fails like

    (qemu) info vm-generation-id
    Error: this feature or command is not currently supported

Turns out the real qmp_query_vm_generation_id() doesn't actually
depend on CONFIG_ACPI_VMGENID, and fails safely when it's off.  Move
it to hw/core/machine-qmp-cmds.c, and drop the stub.  The error
message becomes

    Error: VM Generation ID device not found

Feels like an improvement to me.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20230207075115.1525-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
master
Markus Armbruster 2023-02-07 08:51:10 +01:00
parent 588c13fcb0
commit 36ebc7db79
5 changed files with 18 additions and 30 deletions
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1
MAINTAINERS
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@ -2273,7 +2273,6 @@ F: hw/acpi/vmgenid.c
F: include/hw/acpi/vmgenid.h
F: docs/specs/vmgenid.txt
F: tests/qtest/vmgenid-test.c
F: stubs/vmgenid.c
LED
M: Philippe Mathieu-Daudé <philmd@linaro.org>

18
hw/acpi/vmgenid.c
View File

@ -12,7 +12,6 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-machine.h"
#include "qemu/module.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/aml-build.h"
@ -244,20 +243,3 @@ static void vmgenid_register_types(void)
}
type_init(vmgenid_register_types)
GuidInfo *qmp_query_vm_generation_id(Error **errp)
{
GuidInfo *info;
VmGenIdState *vms;
Object *obj = find_vmgenid_dev();
if (!obj) {
error_setg(errp, "VM Generation ID device not found");
return NULL;
}
vms = VMGENID(obj);
info = g_malloc0(sizeof(*info));
info->guid = qemu_uuid_unparse_strdup(&vms->guid);
return info;
}

18
hw/core/machine-qmp-cmds.c
View File

@ -8,6 +8,7 @@
*/
#include "qemu/osdep.h"
#include "hw/acpi/vmgenid.h"
#include "hw/boards.h"
#include "hw/intc/intc.h"
#include "hw/mem/memory-device.h"
@ -383,3 +384,20 @@ HumanReadableText *qmp_x_query_irq(Error **errp)
return human_readable_text_from_str(buf);
}
GuidInfo *qmp_query_vm_generation_id(Error **errp)
{
GuidInfo *info;
VmGenIdState *vms;
Object *obj = find_vmgenid_dev();
if (!obj) {
error_setg(errp, "VM Generation ID device not found");
return NULL;
}
vms = VMGENID(obj);
info = g_malloc0(sizeof(*info));
info->guid = qemu_uuid_unparse_strdup(&vms->guid);
return info;
}

1
stubs/meson.build
View File

@ -45,7 +45,6 @@ stub_ss.add(files('target-get-monitor-def.c'))
stub_ss.add(files('target-monitor-defs.c'))
stub_ss.add(files('trace-control.c'))
stub_ss.add(files('uuid.c'))
stub_ss.add(files('vmgenid.c'))
stub_ss.add(files('vmstate.c'))
stub_ss.add(files('vm-stop.c'))
stub_ss.add(files('win32-kbd-hook.c'))

10
stubs/vmgenid.c
View File

@ -1,10 +0,0 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-machine.h"
#include "qapi/qmp/qerror.h"
GuidInfo *qmp_query_vm_generation_id(Error **errp)
{
error_setg(errp, QERR_UNSUPPORTED);
return NULL;
}