There's No KDBUS (Or BUS1) For The Linux 4.5 Kernel
Written by Michael Larabel in Linux Kernel on 22 January 2016 at 06:53 PM EST. 14 Comments
LINUX KERNEL --
While a lot of new functionality has been merged for Linux 4.5, there isn't KDBUS or any other new in-kernel IPC mechanism.

Hopefully you weren't counting on KDBUS for Linux 4.5 as it wasn't really expected and would have been more surprising if a pull request had been sent in. That's because KDBUS was sent back to the drawing board and stripped out of Fedora Rawhide's kernel after initially being proposed for mainline integration and systemd developers encouraging Linux distributions to try out the code within their kernel spins.

Since going back to the drawing board, there hasn't been really anything to report on KDBUS. In fact, there's no longer any current KDBUS code via GregKH's repository and the systemd KDBUS branches haven't been touched since Linux 4.3. I haven't been able to find any more recent KDBUS Git repository yet with the redesign.

Meanwhile, there's still the not yet officially released new "BUS1" in-kernel IPC mechanism that seems to share the same goals with KDBUS. The BUS1 Git repositories continue to be very active with the most recent commits being from today. Soon as there's new information to pass along on BUS1, you can expect to read more about it on Phoronix.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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