Linux What's New in Linux 6.5?
'9to5Linux: Just a couple of days after celebrating its 32nd anniversary , Linus Torvalds announced today the final release of the Linux 6.5 kernel series as a major update that introduces several new features, updated and new drivers for better hardware support, and other changes. After seven weeks of RCs, Linux kernel 6.5 is here with new features like MIDI 2.0 support in ALSA, ACPI support for the RISC-V architecture, Landlock support for UML (User-Mode Linux), better support for AMD "Zen" systems, as well as user-space support for the ARMv8.8 memcpy/memset instructions. Also new in Linux 6.5 is Intel TPMI (Topology Aware Register and PM Capsule Interface) support for the power capping subsystem and a TPMI interface driver for Intel RAPL, and the "runnable boosting" feature in the EAS balancer to improve CPU utilization for specific workloads. This release also improves SMP scheduling's load balancer to recognize SMT cores with more than one busy sibling and allows lower-priority CPUs to pull tasks to avoid superfluous migrations, and improves EXT4 file system's journalling, block allocator subsystems, and performance for parallel DIO overwrites.' -- source: https://linux.slashdot.org/story/23/08/27/2316212 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, Hamilton, NZ Mobile +64 22 190 2375 https://www.cs.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/
On Mon, 28 Aug 2023 11:53:09 +1200, Peter Reutemann quoted:
'... MIDI 2.0 support in ALSA ...'
Yay to that. MIDI 1.0 came out in 1984. While there were various addenda (e.g. the General MIDI standard instrument bank, the Standard MIDI file format), the base spec itself remained unchanged for nearly four decades until MIDI 2.0, which was published in 2021. An intro to the new spec is here <https://www.moforte.com/midi-2-0/>. Basically: * The protocol now allows two-way communication, not just one-way. This allows devices to negotiate “profiles”, to indicate the kinds of capabilities they have (e.g. mixers, timbre controls, effects). * Larger parameter fields, taking advantage of higher-bandwidth communication channels. So for example instead of the old limit of 16 separate channels for individual note/controller messages, you now have 16 groups of 16 channels each. * A new “Property Exchange” option is an alternative to SysEx, using JSON format for its messages. * Backward compatibility with MIDI 1.0 remains as a fallback. Of course, the new protocol is no longer confined to the old, slow 31.25kbps serial connections. I imagine the Linux kernel support adds the USB transport option <https://www.midi.org/specifications-old/item/usb-midi-2-0-specification>. Looking for network-based transport, I came across this <https://en.wikipedia.org/wiki/RTP-MIDI>, which Apple initially created as an enhancement of MIDI 1.0, but it appears work is being done to include MIDI 2.0.
participants (2)
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Lawrence D'Oliveiro -
Peter Reutemann