The New & Improved Features Of The Linux 4.19 Kernel

Written by Michael Larabel in Software on 26 August 2018 at 10:51 AM EDT. Page 2 of 2. 13 Comments.

Storage / File-Systems:

- The EROFS file-system is added to the staging tree. This is a read-only file-system developed by Huawei for possible use in future Android mobile devices. EROFS is still missing an open-source user-space.

- Faster SMB3/CIFS performance.

- Low-level Btrfs improvements.

- Other routine file-system changes.

- F2FS discard is finally enabled by default.

- OverlayFS support for stack file operations and metadata-only copy-up.

Other Hardware:

- Initial support for 802.11ax wireless as well as initial Intel 802.11ax support in IWLWIFI.

- Creative Recon3D sound cards are finally supported along with other new sound hardware support.

- Support for the Nintendo Wii guitar and drum attachments to the Wiimote.

- ThinkPad calculator key support and more tablet touchscreens being supported.

- A Raspberry Pi voltage driver in mainline for supporting under-voltage situations and more.

Other Big Additions

- An in-kernel GPS subsystem was added to the kernel... Yes, only in 2018 is there a formal GPS/GNSS subsystem in the mainline kernel.

- ChromeOS EC CEC driver addition for HDMI CEC support with some Chromebooks. USB charging support was also added to the ChromeOS EC driver.

- Google's Gasket Driver Framework was merged - the Google ASIC Software, Kernel Extensions, and Tools. GASKET allows developing thin kernel drivers while shifting the rest of the driver logic to user-space code. GASKET is initially being used for the Google Apex chip.

- An idle injection framework and the never-ending work on Linux power management.

- The STACKLEAK GCC plug-in was merged for preventing some possible stack attacks on the kernel. This is based upon earlier work by PaX/GrSecurity.

- Continued Y2038 preparations and other work.

- Linux 4.19 now requires GCC 4.6 or newer for building with support from GCC 4.5 through GCC 3.2 finally being dropped.

Onwards now to begin benchmarking the Linux 4.19 kernel.

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Michael Larabel

Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 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 automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via