Re: [PATCH 0/4] modules: add support for target-specific modules.

[Claudio Fontana]

On 6/16/21 11:28 AM, Gerd Hoffmann wrote:
>>> Hmm, what would be the use case?  Right now qemu has the all-or-nothing
>>> approach for modules, i.e. if modules are enabled everything we can
>>> build as module will be built as module, and I havn't seen any drawbacks
>>> so far.  So, why would one compile parts of qemu as module and other
>>> parts not?
>>
>> From my point of view, as a QEMU package maintainer, the all-or-nothing 
>> module 
>> approach is great - specially for accelerators - because we can create a set 
>> of officially supported packages and another set of optional modules, that 
>> users may get them if they want to.
> 
> Same here ;)
> 
>> However, please correct me if I'm wrong, I understand that an accelerator as 
>> a 
>> module will add an overhead that some user won't be willing to pay. So, give 
>> them the option to have built-in accelerators seems a good idea.
> 
> Modules add some overhead, yes, and there are surely use-cases where you

Where do we expect the overhead to be, and of which nature?

Do we already know about such an impact?

Thanks,

CLaudio

> don't want accel modules.  I would just expect people don't want the
> other modules either then, but maybe I'm wrong.
> 
> take care,
>   Gerd
>