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Re: [Qemu-devel] qemu aborts if i add a already registered device from q

From: Luiz Capitulino
Subject: Re: [Qemu-devel] qemu aborts if i add a already registered device from qemu monitor ..
Date: Tue, 19 Oct 2010 10:11:44 -0200

On Tue, 19 Oct 2010 15:27:37 +0530
pradeep <address@hidden> wrote:

> Hi
> I tried to add a device to guest from upstream qemu monitor using
> "device_add".

Are you developing a new device or does it happen with existing ones?

If it's the latter, can you describe steps to reproduce it?

> Unknowingly i try to add already registered devices from qemu
> monitor, my qemu monitor is aborted. I don't see a reason to kill
> monitor. I think abort() is a bit rough. we need a better way to handle
> it.  If a user try to add a already registered device, qemu should
> convey this to user saying that, this device already registered and an
> error message should be fine than aborting qemu.
>         QLIST_FOREACH(block, &ram_list.blocks, next) {
>         if (!strcmp(block->idstr, new_block->idstr)) {
>             fprintf(stderr, "RAMBlock \"%s\" already registered,
>         abort!\n",
>                     new_block->idstr);
>             abort();
>         }
> If i return some other value in above code, instead of abort(), I
> would  need change the code for every device, which i dont want to. 
> Is there a way to check, if device is already enrolled or not in the very 
> beginning of "device_add"
> call.
> Thanks
> Pradeep

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