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Introduce UACCE framework support for idxd and have a wq driver resides > under drivers/misc/uacce/idxd to support the char device operations and > deprecate the current custom char dev in idxd. This should remove the burden > on you to deal with the char device. Gah, I feel I already complained at Intel for cramming their own private char devices into subsystems! *subsystems* define the user API, not random drivers in them. uacce is a reasonable place to put something like this if there isn't a multi-driver standard If this is the plan we should block of the char dev under CONFIG_EXPERIMENTAL or something to discourage people using the uAPI we are planning to delete Jason