Re: [PATCH 10/12] hw/core: Improve the query-hotpluggable-cpus error message

[Markus Armbruster <armbru@redhat.com>]

Philippe Mathieu-Daudé <philmd@linaro.org> writes:

> On 7/2/23 08:51, Markus Armbruster wrote:
>> The QERR_ macros are leftovers from the days of "rich" error objects.
>> We've been trying to reduce their remaining use.
>> Get rid of a use of QERR_FEATURE_DISABLED, and improve the slightly
>> awkward error message
>>      (qemu) info hotpluggable-cpus
>>      Error: The feature 'query-hotpluggable-cpus' is not enabled
>> to
>>      Error: machine does not support hot-plugging CPUs
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>>   hw/core/machine-qmp-cmds.c | 3 +--
>>   1 file changed, 1 insertion(+), 2 deletions(-)
>> diff --git a/hw/core/machine-qmp-cmds.c b/hw/core/machine-qmp-cmds.c
>> index a6ed3a63c3..2d904747c0 100644
>> --- a/hw/core/machine-qmp-cmds.c
>> +++ b/hw/core/machine-qmp-cmds.c
>> @@ -16,7 +16,6 @@
>>   #include "qapi/error.h"
>>   #include "qapi/qapi-builtin-visit.h"
>>   #include "qapi/qapi-commands-machine.h"
>> -#include "qapi/qmp/qerror.h"
>>   #include "qapi/qmp/qobject.h"
>>   #include "qapi/qobject-input-visitor.h"
>>   #include "qapi/type-helpers.h"
>> @@ -141,7 +140,7 @@ HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
>>       MachineClass *mc = MACHINE_GET_CLASS(ms);
>>         if (!mc->has_hotpluggable_cpus) {
>> -        error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
>> +        error_setg(errp, "machine does not support hot-plugging CPUs");
>
> "hotplug CPUs" or "hot-pluggable CPUs"?

I think "hotplug CPUs" is strictly worse than "hotpluggable CPUs",
because "hotpluggable" is an adjective, while "hotplug" is not.

I slightly prefer "does not support hot-plugging CPUs" over "does not
support hot-pluggable CPUs".

As always, I'm happy to take advice from native speakers :)

>
>>           return NULL;
>>       }
>>