On 03/09/2016 11:10, Dmitry Torokhov wrote:

I was thinking if we kernel could post
"conditions" (maybe simple stings) that it waits for, and userspace
could unlock these "conditions". One of them might be "firmware
available".

On idea offered by Josh Triplett that seems to overlap with this one
is to have something similar to the (deprecated) userhelper with
*per-blob* requests and notifications except for one major difference:
userspace would not anymore be in charge of *providing* the blob but
would instead only *signal* when a given blob becomes available and is
either found or found missing. Then the kernel loads the blob _by
itself_; unlike the userhelper. No new “critical filesystem” concept
and a *per-blob basis*, allowing any variation of blob locations
across any number of initramfs and filesystems.

Could this one fly?