NetBSD 9.1

• Parallelized disk encryption with cgd(4).
• Added the C.UTF-8 locale.
• Added support for Xen 4.13.
• Various reliability fixes and improvements for ZFS. Added support for ZFS on dk(4) wedges on ld(4).
• NVMM hypervisor updated, bringing improved emulation, performance, and stability.
• Additional settings for the NPF firewall, updated documentation, and various npfctl(8) usability improvements.
• X11 improvements, default window manager switched to ctwm(1), enabled sixel support in xterm(1), fixes for older Intel chipsets
• Stability improvements for LFS, the BSD log-structured filesystem.
• Added support for using USB security keys in raw mode, usable in Firefox and other applications.
• Added support for more hardware RNGs in the entropy subsystem, including those in Allwinner and Rockchip SoCs.
• Various audio system fixes, resolving NetBSD 7 and OSSv4 compatibility edge-cases, among other issues.
• Added aq(4), a driver for Aquantia 10 gigabit ethernet adapters.
• Added uxrcom(4), a driver for Exar single and multi-port USB serial adapters.
• Improved default input behaviour for Lenovo ThinkPads with clickpads and trackpoints.
• Built-in MIDI sequencer and CGD support in evbarm GENERIC kernels - the modules now don't need to be loaded.
• Fixes for sigaltstack(2) on AArch64, resolving issues seen with Go and Erlang.
• Fixes for evbarm AM335x (e.g. BeagleBone Black) CPU frequency scaling, and reduced idle CPU usage.
• Improved output in lastlogin(8), w(1), cal(1), and added a 'show' subcommand to hdaudioctl(8).
• Improved framebuffer console performance on amd64 early in the boot process, making amd64 boot faster.
• More built-in keyboard layouts for wscons(4): Brazilian Portugese, Estonian, Icelandic, and Latin American Spanish.
• Integrated third-party components were updated with fixes, including GCC, dhcpcd, OpenSSL, and tzdata.
• Various instances of kernel memory corruption and information leakage were fixed.
• Many other miscellaneous bug fixes, and additions to existing device drivers.

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