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Re: [Qemu-devel] [PATCH v3] qdev: Avoid type assertion in qdev_build_hot
From: |
Andreas Färber |
Subject: |
Re: [Qemu-devel] [PATCH v3] qdev: Avoid type assertion in qdev_build_hotpluggable_device_list() |
Date: |
Tue, 09 Dec 2014 16:08:44 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0 |
Am 08.12.2014 um 15:07 schrieb Jun Li:
> Ping, why does this patch has not been merged until now? Could anyone give
> some explanations? Thx.
I had already applied the previous version of the patch to qom-next.
I'll drop it and replace it with this version then.
Regards,
Andreas
> On Wed, 11/05 15:03, Jun Li wrote:
>> Currently when *obj is not a TYPE_DEVICE, qemu will abort. This patch just
>> fixed it. When *obj is not a TYPE_DEVICE, just do not add it to hotpluggable
>> device list.
>>
>> This patch also fixed the following issue:
>> 1, boot qemu using cli:
>> $ /opt/qemu-git-arm/bin/qemu-system-x86_64 -monitor stdio -enable-kvm \
>> -device virtio-scsi-pci,id=scsi0
>>
>> 2, device_del scsi0 via hmp using tab key(first input device_del, then press
>> "Tab" key).
>> (qemu) device_del
>>
>> After step2, qemu will abort.
>> (qemu) device_del hw/core/qdev.c:930:qdev_build_hotpluggable_device_list:
>> Object 0x5555563a2460 is not an instance of type device
>>
>> Signed-off-by: Jun Li <address@hidden>
>> Reviewed-by: Paolo Bonzini <address@hidden>
>> ---
>> v3:
>> According to Andreas's suggestion, do some changes. As followings:
>> 1, change the Subject to more meaningful.
>> 2, use two "return 0" to return early avoid reindentation. And I have
>> found in qcow2_grow_l1_table has also used two "return 0". So accept
>> Andreas's suggestion. Thanks.
>>
>> v2:
>> This version just do a little changes for the commit message.
>> As following show:
>> In v1,
>> 1, boot qemu using cli:
>> virtio-scsi-pci,id=scsi0 -enable-kvm
>>
>> In v2,
>> 1, boot qemu using cli:
>> $ /opt/qemu-git-arm/bin/qemu-system-x86_64 -monitor stdio -enable-kvm \
>> -device virtio-scsi-pci,id=scsi0
>> ---
>> hw/core/qdev.c | 7 ++++++-
>> 1 file changed, 6 insertions(+), 1 deletion(-)
>>
>> diff --git a/hw/core/qdev.c b/hw/core/qdev.c
>> index b3d5196..7db3e13 100644
>> --- a/hw/core/qdev.c
>> +++ b/hw/core/qdev.c
>> @@ -927,7 +927,12 @@ void qdev_alias_all_properties(DeviceState *target,
>> Object *source)
>> int qdev_build_hotpluggable_device_list(Object *obj, void *opaque)
>> {
>> GSList **list = opaque;
>> - DeviceState *dev = DEVICE(obj);
>> + DeviceState *dev = (DeviceState *)object_dynamic_cast(OBJECT(obj),
>> + "device");
>> +
>> + if (dev == NULL) {
>> + return 0;
>> + }
>>
>> if (dev->realized && object_property_get_bool(obj, "hotpluggable",
>> NULL)) {
>> *list = g_slist_append(*list, dev);
>> --
>> 1.9.3
>>
>
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