PCI, Crypto & Other Updates Head Into Linux 4.17

Written by Michael Larabel in Linux Kernel on 7 April 2018 at 07:16 AM EDT. 2 Comments
We are at the end of the first (and busiest) week of the two-week long Linux 4.17 kernel merge window. There have been many articles on Phoronix about the big highlights of this next kernel version while here are some of the smaller change-sets that came about this week.

Aside from the many articles about the prominent additions to Linux 4.17, there were also many smaller but still significant pull requests. Some of these other pulls this week for the 4.17 kernel included:

- PCI changes with still some ASPM (Active State Power Management) fixes, decoding for 16 GT/s link speed, support for computing the maximum supported link bandwidth and bandwidth available to a device, other bug/issue reporting improvements, Tegra PCI power management support, Tegra loadable module support, and other updates and fixes.

- VFIO updates include ioeventfd support.

- ARM64 features a rework of the CPU features framework so that CPUs can be whitelisted that don't require KPTI, including in heterogeneous ARM systems. There is also support for AArch64 IDC/DIC extensions, memory model changes, a workaround for Cortex-A55 hardware erratum, and other fixes/improvements.

- Crypto updates include SPECK and SM4 block ciphers being added, improved scheduling latency on ARM, scatter/gather support for GCM in the AES-NI driver, AEAD support to the crypto engine, batch registration in SIMD, and other crypto driver improvements.

- Improvements to the leaking_addresses script.

We'll see what more comes to the Linux 4.17 kernel over the week ahead followed by our usual feature summary and onwards to the benchmarking process. Linux 4.17.0 will likely be released as stable around mid-June.
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Michael Larabel

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 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.

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