Re: [Qemu-trivial] [Qemu-block] [PATCH] block/dmg: make it modular if using additional library

[Michael Tokarev]

10.03.2015 16:58, Stefan Hajnoczi пишет:
> On Tue, Mar 10, 2015 at 10:09 AM, Kevin Wolf <address@hidden> wrote:
>> Am 10.03.2015 um 10:17 hat Fam Zheng geschrieben:
>>> On Tue, 03/10 09:50, Kevin Wolf wrote:
>>>> Am 10.03.2015 um 08:06 hat Michael Tokarev geschrieben:
>>>> Also, should we consider making some more rarely used image formats
>>>> modules even if they don't pull in external dependencies?
>>>
>>> Sounds reasonable to me. Is the intention to reduce binary size?
>>
>> Yes, that and also that it allows compiling out some drivers without
>> having to mess with the Makefiles. You just don't install all of them.
>>
>> Related to that, Peter also mentioned that you (the user, not developer
>> or packager) could simply disable a single driver, for example as a
>> temporary hotfix in the case of security problems in a block driver.
>> That would actually be an argument for making _all_ drivers modules.
> 
> I am for making all block drivers built as modules.

That might be useful if module loading will be modified a bit,
like by loadin modules on demand only.  Something like this,
search a "foo" block driver in the registered list, found ->
use it, if not, try to open block-foo.so (maybe after looking
in the "available" internal list before that) and look up in
the registered list again.

That will make it more useful.

Thanks,

/mjt