Re: [PATCH] configfs: Implement binary attributes (v3)

[Pantelis Antoniou]

Hi Greg,

> On Oct 29, 2014, at 04:54 , Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> 
> On Tue, Oct 28, 2014 at 10:30:32PM +0200, Pantelis Antoniou wrote:
>> ConfigFS lacked binary attributes up until now. This patch
>> introduces support for binary attributes in a somewhat similar
>> manner of sysfs binary attributes albeit with changes that
>> fit the configfs usage model.
>> 
>> Problems that configfs binary attributes fix are everything that
>> requires a binary blob as part of the configuration of a resource,
>> such as bitstream loading for FPGAs, DTBs for dynamically created
>> devices etc.
> 
> What's wrong with using the firmware interface for this instead?
> 

It is problem when the bitstream is provided by user-space due to namespace
issues. What happens if you have a container, from where do you get that firmware
file so that you can use it.

IIRC Joel didnât object too much last time I posted it.

> What driver/subsystem wants to use configfs binary files?  Having a user
> for this api is essential if you want it to be merged.
> 

Device tree overlays for starters and the FPGA manager.

For the first please look at "OF: DT-Overlay configfs interface (v2)â posted
yesterday; you are in the CC list.

> thanks,
> 
> greg k-h

Regards

â Pantelis

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