RELNOTES: Document that grep no longer follows symlinks by default

Requested by: markj

RELNOTES: Add mididump(1)

Sponsored by: The FreeBSD Foundation

RELNOTES: document update of unicode and cldr

RELNOTES: document the disabling of RSA generation for basic cloudinit

RELNOTES: RSA host keys for SSH are deprecated

Ficticious hash since there's no actual code change; but the release
notes for FreeBSD 15 should say that RSA host keys for SSH will no
longer be gener

RELNOTES: RSA host keys for SSH are deprecated

Ficticious hash since there's no actual code change; but the release
notes for FreeBSD 15 should say that RSA host keys for SSH will no
longer be generated by default in FreeBSD 16.

Discussed on: freebsd-arch
Sponsored by: Amazon

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RELNOTES: Document EC2 SSH RSA host key desupport.

Sponsored by: Amazon

RELNOTES: Add an entry for SO_SPLICE

Sponsored by: Klara, Inc.
Sponsored by: Stormshield

RELNOTES: Document recent bhyve commits which have user-visible impact

RELNOTES: mention moving filesystems to section 4

Fixes: 1687d7 (move filesystems to s4)
Reported by: mhorne
Reviewed by: imp, mhorne
Pull Request: https://github.com/freebsd/freebsd-src/pull/1289

RELNOTES: add entries about byacc and ncurses updates

RELNOTES: document MAC/do

RELNOTES: Mention hw.snd.version being removed

Sponsored by: The FreeBSD Foundation

RELNOTES: Document the addition of NVMe over Fabrics support

RELNOTES: Mention date(1)'s nanosecond support

Sponsored by: Klara, Inc.

RELNOTES: Fix wrong commit hash

Fixes: 25723d66369f ("sound: Retire unit.*")
Sponsored by: The FreeBSD Foundation
MFC after: 1 week

sound: Retire unit.*

The unit.* code is largely obsolete and imposes limits that are no
longer needed nowadays.

- Capping the maximum allowed soundcards in a given machine. By default,
the limit

sound: Retire unit.*

The unit.* code is largely obsolete and imposes limits that are no
longer needed nowadays.

- Capping the maximum allowed soundcards in a given machine. By default,
the limit is 512 (snd_max_u() in unit.c), and the maximum possible is
2048 (SND_UNIT_UMAX in unit.h). It can also be tuned through the
hw.snd.maxunit loader(8) tunable. Even though these limits are large
enough that they should never cause problems, there is no need for
this limit to exist in the first place.
- Capping the available device/channel types. By default, this is 32
(snd_max_d() in unit.c). However, these types are pre-defined in
pcm/sound.h (see SND_DEV_*), so the cap is unnecessary when we know
that their number is constant.
- Capping the number of channels per-device. By default, the limit 1024
(snd_max_c() in unit.c). This is probably the most problematic of the
limits mentioned, because this limit can never be reached, as the
maximum is hard-capped at either hw.snd.maxautovchans (16 by default),
or SND_MAXHWCHAN and SND_MAXVCHANS.

These limtits are encoded in masks (see SND_U_MASK, SND_D_MASK,
SND_C_MASK in unit.h) and are used to construct a bitfield of the form
[dsp_unit, type, channel_unit] in snd_mkunit() which is assigned to
pcm_channel->unit.

This patch gets rid of everything unit.*-related and makes a slightly
different use of the "unit" field to only contain the channel unit
number. The channel type is stored in a new pcm_channel->type field, and
the DSP unit number need not be stored at all, since we can fetch it
from device_get_unit(pcm_channel->dev). This change has the effect that
we no longer need to impose caps on the number of soundcards,
device/channel types and per-device channels. As a result the code is
noticeably simplified and more readable.

Apart from the fact that the hw.snd.maxunit loader(8) tunable is also
retired as a side-effect of this patch, sound(4)'s behavior remains the
same.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Reviewed by: dev_submerge.ch
Differential Revision: https://reviews.freebsd.org/D44912

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RELNOTES: Add an entry for the nfs_reserved_port_only default change

Sponsored by: The FreeBSD Foundation

RELNOTES: Add entry for updates to ktrace(2)

Approved by: markj (mentor)

RELNOTES: Add awk update from 2 weeks ago.

Sponsored by: Netflix

RELNOTES: fix my poor english

Reported by: Gary Jennejohn <garyj@gmx.de>

RELNOTES: document usbconfig(8) changes

RELNOTES: document powerd enable on RPI images

Note that powerd(8) is enabled in /etc/rc.conf.

RELNOTES: mention ZFS dataset support for jail(8)

Document the two recent newsyslog(8) change (-c option and <compress>
configuration option).

RELNOTES: Add an entry for commit 1a878807006c