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Re: [Qemu-devel] [PATCH] hw/qdev-monitor: report error for -device <not-
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH] hw/qdev-monitor: report error for -device <not-a-device-type> |
Date: |
Wed, 28 Nov 2012 13:02:26 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 |
Il 28/11/2012 12:54, Luiz Capitulino ha scritto:
> On Wed, 28 Nov 2012 10:54:33 +0200
> Alon Levy <address@hidden> wrote:
>
>> Instead of aborting immediately after at DEVICE_CLASS(obj)
>>
>> Signed-off-by: Alon Levy <address@hidden>
>> ---
>> hw/qdev-monitor.c | 5 +++++
>> 1 file changed, 5 insertions(+)
>>
>> diff --git a/hw/qdev-monitor.c b/hw/qdev-monitor.c
>> index 479eecd..3b70cdb 100644
>> --- a/hw/qdev-monitor.c
>> +++ b/hw/qdev-monitor.c
>> @@ -426,6 +426,11 @@ DeviceState *qdev_device_add(QemuOpts *opts)
>> return NULL;
>> }
>>
>> + if (!object_class_dynamic_cast(obj, "device")) {
>> + qerror_report(QERR_INVALID_PARAMETER_TYPE, "driver", "device type");
>> + return NULL;
>> + }
>
> Gives me the impression that something is wrong before this, but it's
> better to ask a QOM guy (CC'ing them).
I would reuse the same error message as for "if (!obj)", and also use
TYPE_DEVICE instead of the hardcoded string, but the patch is ok.
> How do you reproduce it btw?
$ x86_64-softmmu/qemu-system-x86_64 -device SCSI
Object 0x7f56872248b0 is not an instance of type device
Aborted
However, we also need an object_class_is_abstract method to fix this
similar failure:
$ x86_64-softmmu/qemu-system-x86_64 -device pci-device
**
ERROR:/home/pbonzini/work/upstream/qemu/qom/object.c:306:object_initialize_with_type:
assertion failed: (type->abstract == false)
Aborted
All in all, it makes sense to me that we delay this post-1.3.
Paolo
>> +
>> k = DEVICE_CLASS(obj);
>>
>> /* find bus */
>
Re: [Qemu-devel] [PATCH] hw/qdev-monitor: report error for -device <not-a-device-type>, Markus Armbruster, 2012/11/28