xref: /freebsd/UPDATING (revision 6ccdd2fc2328dd81b9c645fba025d01052a3c1a1)
1Updating Information for users of FreeBSD-CURRENT.
2
3This file is maintained and copyrighted by M. Warner Losh <imp@freebsd.org>.
4See end of file for further details.  For commonly done items, please see the
5COMMON ITEMS: section later in the file.  These instructions assume that you
6basically know what you are doing.  If not, then please consult the FreeBSD
7handbook:
8
9    https://docs.freebsd.org/en/books/handbook/cutting-edge/#makeworld
10
11Items affecting the ports and packages system can be found in
12/usr/ports/UPDATING.  Please read that file before updating system packages
13and/or ports.
14
15NOTE TO PEOPLE WHO THINK THAT FreeBSD 16.x IS SLOW:
16	FreeBSD 16.x has many debugging features turned on, in both the kernel
17	and userland.  These features attempt to detect incorrect use of
18	system primitives, and encourage loud failure through extra sanity
19	checking and fail stop semantics.  They also substantially impact
20	system performance.  If you want to do performance measurement,
21	benchmarking, and optimization, you'll want to turn them off.  This
22	includes various WITNESS- related kernel options, INVARIANTS, malloc
23	debugging flags in userland, and various verbose features in the
24	kernel.  Many developers choose to disable these features on build
25	machines to maximize performance.  (To completely disable malloc
26	debugging, define WITH_MALLOC_PRODUCTION in /etc/src.conf and rebuild
27	world, or to merely disable the most expensive debugging functionality
28	at runtime, run "ln -s 'abort:false,junk:false' /etc/malloc.conf".)
29
3020251115:
31	The FreeBSD-base repository is now defined in /etc/pkg/FreeBSD.conf,
32	disabled by default.  In -CURRENT and -STABLE this points at nightly
33	builds on pkg.freebsd.org; for BETA/RC/RELEASE builds it points at
34	release engineering builds on pkgbase.freebsd.org.
35
36	Users of pkgbase will need to replace any existing definition of the
37	FreeBSD-base repository in /usr/local/etc/pkg/repos/ with a single
38	line "FreeBSD-base: { enabled: yes }".
39
4020251110:
41	OpenPAM (including libpam and the PAM modules) has moved to the new
42	"pam" package.  The pam-lib subpackage, which includes libpam, will
43	be automatically installed when required.
44
45	If you have set-minimal(-jail) installed, the pam base package which
46	contains the PAM modules will also be automatically installed.
47	If you don't, you MUST manually install the FreeBSD-pam package if you
48	need to authenticate users, otherwise you won't be able to log in.
49
50	This change only affects pkgbase users.
51
5220251105:
53	pf(4) now supports nat64 via the af-to keyword.
54
5520251102:
56	Commit e5aa60d06958 changed the internal KAPI between
57	the NFS modules.  As such, they all need to be rebuilt
58	from sources.  __FreeBSD_version was bumped to 1600004 for this.
59
6020251025:
61	flua(1) has moved to the new FreeBSD-flua package.  If you use flua,
62	you may want to install this package if it's not otherwise installed
63	as a dependency of something else.  This change only affects pkgbase
64	users.
65
6620251021:
67	Bump __FreeBSD_version to 1600002 for LinuxKPI.  An embedded struct
68	has changed size and might possibly be an issue otherwise.
69
7020251016:
71	With the migration to OpenZFS in FreeBSD 13.x a number of ZFS sysctls
72	moved to new locations, but backwards compatibility aliases were
73	provided.  These aliases will be removed in the near future.  Please
74	update /etc/sysctl.conf to reference the new OIDs.  For example,
75
76	        vfs.zfs.min_auto_ashift=12
77
78	needs to be changed to
79
80	        vfs.zfs.vdev.min_auto_ashift=12
81
8220251015:
83	The "FreeBSD-unbound" package is renamed to "FreeBSD-local-unbound".
84	If you have set-optional or set-base installed, the new package will
85	be installed automatically, otherwise you should manually install the
86	new package and remove the old one.
87
88	This change only affects pkgbase users.
89
9020251012:
91	Blacklist has been renamed upstream to Blocklist.  If you have it
92	configured, rename all configuration files, firewall anchors or
93	sentinel files to reflect the new nomenclature.  Old setups will
94	continue to work emitting a warning.
95
9620251002:
97	Audio-related utilities including mixer(8) and virtual_oss(8) have
98	moved to the new FreeBSD-sound package.  If you have set-optional or
99	set-base installed this package will be installed automatically,
100	otherwise you should install it manually if you need these utilities.
101
10220250929:
103	Both drm-kmod and nividia-drm ports had to be updated to either no
104	longer conflict on LinuxKPI vs. native PCI changes and/or to keep
105	working after some LinuxKPI PCI adjustments which were previously
106	hidden behind native PCI.
107	Bump __FreeBSD_version 1600001 so users will pick up updated packages.
108
10920250929:
110	The deprecated ftpd(8) has been removed.  Users who still need ftpd
111	can install the ftp/freebsd-ftpd port.  pkgbase users should remove
112	the orphaned FreeBSD-ftpd package.
113
11420250923:
115	Several changes which affect pkgbase users (only):
116
117	powerd has been moved to a new FreeBSD-powerd package.  If you have
118	FreeBSD-set-minimal installed, the new package will be installed
119	automatically, otherwise you may want to install it by hand.
120
121	libpmc and related utilities (/usr/sbin/pmc*) have moved to the new
122	FreeBSD-pmc package.  If you use these, you may want to install the
123	package.
124
125	The libbz2 package has been renamed to bzip2, and /usr/bin/bzip2 has
126	been moved to the new package.  If you have set-minimal installed,
127	the new package will be added automatically, otherwise you may want
128	to manually install it.
129
130	This only affects pkgbase users.
131
13220250918:
133	mandoc (including /usr/bin/man) has been moved to a new package,
134	FreeBSD-mandoc.  If you have the minimal set installed, this package
135	will be installed automatically, otherwise you may want to install it.
136
137	Kyua has been moved to the FreeBSD-kyua package, and ATF has been moved
138	to the FreeBSD-atf* packages.  If you have FreeBSD-tests installed,
139	these packages will be installed automatically, otherwise you should
140	manually install them if you need these tools.
141
142	This only affects pkgbase users.
143
14420250912:
145	If SRCCONF is unset and a file named src.conf is present at
146	the top of the source tree, it will now be used instead of
147	/etc/src.conf.
148
14920250907:
150	The MANSPLITPKG knob has been turned off by default, so pkgbase builds
151	will no longer generate "-man" subpackages; instead the manpages will
152	be shipped in the packages they belong to.  If you want to continue
153	building split man packages, set WITH_MANSPLITPKG=1.
154
15520250905:
156	FreeBSD 16.0-CURRENT.
157
15820250903:
159	The BLOAT_KERNEL_WITH_EXTERR kernel config option has been renamed to
160	EXTERR_STRINGS.
161
16220250827:
163	The names of pkg repositories defined in /etc/pkg/FreeBSD.conf have
164	changed: "FreeBSD" is now "FreeBSD-ports", and "FreeBSD-kmods" is now
165	"FreeBSD-ports-kmods".  Users with /usr/local/etc/pkg/repos files
166	which override these will need to adjust their configuration to match
167	the new names.
168
16920250823:
170	The set of pkgbase packages for Kerberos and OpenSSL has changed.
171	After updating past 250e77d4f0a5, you should check 'pkg orphans'
172	and remove any orphaned packages, then examine the output of
173	'pkg install -r base -g FreeBSD-openssl\* FreeBSD-kerberos\*'
174	and install any new packages you need.
175
17620250823:
177	To restore bridge(4)'s ABI compatibility with ifconfig from 14.x or
178	earlier, the size of struct ifbreq has changed, so you must update
179	the kernel and /sbin/ifconfig at the same time or you will not be
180	able to add interfaces to bridge.  This is particularly important
181	if you require bridge for network access during boot, in which case
182	you should install the new kernel and the new /sbin/ifconfig prior
183	to rebooting.
184
18520250820:
186	The WITHOUT_GSSAPI src.conf knob has been removed.  This was already
187	a no-op for MIT Kerberos, so this only affects builds which set
188	WITHOUT_MITKRB5=1, in which case you now always get libgssapi.
189
190	Also, Heimdal's compile_et and libcom_err are now controlled by
191	WITHOUT_KERBEROS, not WITHOUT_KERBEROS_SUPPORT.  This matches
192	the behaviour of the MIT Kerberos versions.
193
19420250820:
195	Commits 08c7dd2fbe4f and a4197ea47777 have changed the ABI between
196	libvmmapi and the vmm device. If using a custom kernel configuration,
197	please ensure that the COMPAT_FREEBSD14 option is included so older
198	versions of libvmmapi continue working as expected.
199
20020250819:
201	The CLEAN option has been switched back from default-on to default-off.
202	This reverts the 20250808 change below, which had reverted the 20240729
203	change before it.  Note that some src.conf(5) options are known to break
204	ABI or compatibility in ways that may require a clean build initially
205	when switched.
206
20720250816:
208	Sendmail's libmilter has been moved to its own package.  If you want
209	to compile applications that use libmilter, you should install the
210	FreeBSD-libmilter* packages.
211
212	If you only have FreeBSD-sendmail installed for applications that
213	require libmilter, you can now remove it.
214
21520250815:
216	The [gs]etgroups(2)syscalls have changed. To maintain backwards
217	compatibility with existing programs, you need COMPAT_FREEBSD14 in
218	your kernel config until all applications which use this are
219	rebuild/reinstalled.
220
22120250815:
222	jemalloc 5.3.0 has been committed to the tree.
223
22420250815:
225	The removal of Secure RPC DES authentication noted in 20250810
226	has been reverted.  (However, it is still non-functional.)
227
22820250813:
229	Commit cce64f2e6851 changed the internal KAPI between the NFS
230	modules.  As such, all of them need to be rebuilt from sources.
231	__FreeBSD_version has been bumped to 1500060 already today,
232	 so I will not bump it again for this.
233
23420250813:
235	The gpiobus_attach_bus() function has been removed. Drivers should now
236	use the gpiobus_add_bus() function instead. The difference being that
237	gpiobus_add_bus() doesn't call bus_attach_children(), calling it will
238	be the responsibility of the caller now.
239
24020250810:
241	Support for Secure RPC DES authentication has been removed.
242	The keyserv(8) daemon was already removed, but support for it in libc
243	has also been removed, so if you somehow still had keyserv installed,
244	it will now stop working.  There is no workaround for this.  Removing
245	DES is considered a feature.
246
24720250808:
248	The CLEAN option has been switched back from default-off to
249	default-on.  This reverts the 20240729 change below.
250
25120250807:
252	routed(8) and route6d(8) have moved to the FreeBSD-rip package.
253	If you use either of these, you should install the new package.
254
25520250806:
256	if_epair(4) now uses ether_gen_addr(9) to generate a stable MAC
257	address.
258	To keep using the random address, set the loader tunable
259	net.link.epair.ether_gen_addr=0.
260
26120250804:
262	bsdconfig (including sysrc(8)) has moved to the new bsdconfig
263	package.  If you use pkgbase and wish to use bsdconfig, you should
264	install FreeBSD-bsdconfig.
265
26620250730:
267	The usbhid(4) USB HID driver is now enabled by default, and will be
268	used in preference to other USB HID drivers like ukbd(4), ums(4), and
269	uhid(4).  Work on a FIDO/U2F driver and moused(8) is in progress.
270	The default is being switched now so that we can find and fix any
271	additional issues prior to FreeBSD 15.0.
272
273	To revert to the previous USB HID driver behavior, set the loader
274	tunable hw.usb.usbhid.enable=0.
275
27620250727:
277	bmake (i.e., /usr/bin/make and /usr/share/mk) has moved to a new
278	package, FreeBSD-bmake.  If you use pkgbase and you need make, you
279	should install this package.
280
28120250726:
282	amd64 kernel configurations must contain "options SMP".
283
28420250725:
285	gssd(8) has been moved to a new package, FreeBSD-gssd.  If you use
286	pkgbase and you need gssd, you should install this package.
287
28820250724:
289	The Kerberos packages which are built when WITH_MITKRB5 is enabled
290	have been renamed from FreeBSD-krb5* to FreeBSD-kerberos*.  This
291	affects pkgbase users who manually enabled WITH_MITKRB5, *or* use
292	the default value of WITH_MITKRB5 and updated past c7da9fb90b0b
293	(20250721) which made WITH_MITKRB5 the default.
294
295	In either case, if you have FreeBSD-krb5* packages installed, you
296	should remove them and (re)install the equivalent FreeBSD-kerberos*
297	packages instead.
298
29920250721:
300	WITH_MITKRB5 is now enabled by default. MIT KRB5 has replaced
301	Heimdal in base. Ports that use USES=gssapi must be rebuilt.
302	A clean buildworld is required.
303
30420250719:
305	Commits 392a82b225 and c00baac0ab both changed the
306	internal API between the NFS modules.  As such, all
307	these modules need to be rebuilt from sources.
308	__FreeBSD_version was bumped to 1500053 for this.
309
31020250710:
311	The shar(1) utility has been removed from base.  The
312	sysutils/freebsd-shar port was created to maintain this version of
313	shar(1) past its removal from base.
314
31520250704:
316	LinuxKPI device.h and acpi changes effecting drivers and drm-kmod.
317	Bump __FreeBSD_version 1500050 to be able to detect these changes.
318
31920250630:
320	Commits 171f66b0c2ca and 8e2a90ac8089 changed the internal
321	api between nfscommon.ko and the other nfs modules.
322	Bump __FreeBSD_version to 1500049 for this.
323	All NFS related modules must be rebuilt from up-to-date
324	sources.
325
32620250625:
327	"make delete-old" will now remove the Forth bootloader entirely
328	if the system is built with WITHOUT_FORTH.
329
33020250614:
331	MIT KRB5 (MIT Kerberos5) has been imported into 15-CURRENT. To
332	and install MIT KRB5, add WITH_MITKRB5=yes to /etc/src.conf. This
333	will build and install MIT KRB5 1.21.3. And it will remove Heimdal
334	1.5.2 when delete-old and delete-old-libs are run. To revert back
335	simply buildworld/installworld again with delete-old-libs and
336	delete-old.
337
338	At the moment we only know of a couple of ports that might be
339	affected. Adjusting libmap.conf does not circumvent runtime issues.
340	The few affected ports must be rebuilt. A successful exp-run will be
341	run before MIT KRB5 becomes default.
342
343	Those using the KDC in FreeBSD base may wish to wait. The Heimdal
344	HDB is incompatible with the MIT KRB5 KDC. The migration procedure
345	is a little involved.
346
34720250603:
348	LinuxKPI dma-mapping.h were pulled into the tree from drm-kmod.
349	Bump _FreeBSD_version to 1500045 to be able to detect this change.
350
35120250527:
352	pf changed extension header handling. It now treats AH headers on IPv4 just
353	like AH headers on IPv6 and skips over them, allowing filtering on the inner
354	protocol.
355
35620250527:
357	pf now blocks IPv6 packets with a hop-by-hop or destination options header by
358	default. Such packets can be passed by adding "allow-opts" to the rule. IPv6
359	options are now handled just like their IPv4 counterparts.
360
36120250527:
362	The CAM target layer userland, i.e. ctld(8), ctladm(8) and ctlstat(8),
363	has moved to the new FreeBSD-ctl package.  If you use pkgbase and you
364	need the CAM Target Layer, you should install the new package.
365
366	Development-related tools (e.g. ar and nm) have moved to the new
367	"FreeBSD-toolchain" package, which subsumes and obsoletes the
368	existing "FreeBSD-elftoolchain" package.  If you use pkgbase and
369	need to compile software, you should install the new package and
370	ensure the old FreeBSD-elftoolchain* packages are completely removed.
371
37220250521:
373	Commit e64fe5ad3a23 removed in6_maxmtu and its setter in6_setmaxmtu().
374	in6_maxmtu is used to store the max IPv6 MTU of all interfaces,
375	however it does not have any in-tree consumers since the introduction
376	from the KAME project. The removal should have little impact, and the
377	max IPv6 MTU can be easily retrieved by iterating over all the attached
378	interface if 3rd party modules need it.
379
38020250515:
381	Commit 772258c89f28 changed the internal API between the nfscommon
382	and nfscl modules.  Both need to be built from updated sources.
383
38420250513:
385	The bridge(4) sysctl net.link.bridge.member_ifaddrs now defaults to 0,
386	meaning that interfaces added to a bridge may not have IP addresses
387	assigned.  Refer to bridge(4) for more information.
388
38920250507:
390	UMASS quirks and auto-quirk probing has been overhauled. CAM now won't
391	send SYNCHRONIZE CACHE unless MODE PAGE 8 is present and valid. This
392	should allow more devices to work (since the auto quirk code was updated
393	in 14 and broke several e-readers and the like). Please send imp@freebsd.org
394	any regression reports.
395
39620250504:
397	Commit 9419e086e1a3 changed the internal API between the nfscommon
398	and nfscl modules.  Both need to be built from updated sources.
399
40020250412:
401	LinuxKPI alloc routines were changed to return physically contiguous
402	memory where expected. These changes may require out-of-tree drivers
403	to be recompiled.
404	Bump __FreeBSD_version to 1500037 to be able to detect this change.
405
40620250409:
407	Intel iwlwifi firmware has been removed from the src repository.
408	Before updating their system, users of iwlwifi(4) or iwx(4) must
409	install the appropriate firmware for their chipset using fwget(8) or
410	building it from ports.
411
41220250314:
413	We now use LLVM's binary utilities (nm, objcopy, etc.) by default.
414	The WITHOUT_LLVM_BINUTILS src.conf(5) knob can be used to revert to
415	ELF Tool Chain tools if desired.
416
41720250303:
418	Commit 4a77657cbc01 changed the ABI between ipfw(8) and ipfw(4).
419	Please note that the old ipfw(8) binary will not work with the new
420	ipfw(4) module. Therefore, it is recommended to disable ipfw during
421	the upgrade, otherwise the host system may become inaccessible because
422	ipfw rules cannot be installed with the old binary.
423
42420250214:
425	Commit 4517fbfd4251 modified the internal API between the
426	nfscommon and nfscl modules.  As such, both of these modules
427	need to be rebuilt from sources.
428
42920250201:
430	The NFS related daemons, that provide RPC services to the kernel:
431	gssd(8), rpcbind(8), rpc.tlsservd(8) and rpc.tlsclntd(8), now use a
432	different transport - netlink(4) socket instead of unix(4).  Users of
433	NFS need to upgrade both kernel and world (binaries and libc) at once.
434	Also, any revision between 88cd1e17a7d8 and 99e5a70046da should be
435	avoided.
436
43720250129:
438	Defer the January 19, 2038 date limit in UFS1 filesystems to
439	February 7, 2106. This affects only UFS1 format filesystems.
440	See commit message 1111a44301da for details.
441
44220250127:
443	The Allwinner a10_timer driver has been renamed to aw_driver. If you
444	have a custom kernel configuration including the line 'device
445	a10_timer', it must be adjusted to 'device aw_timer'. The same applies
446	for device exclusions with 'nodevice'.
447
44820250106:
449	A new SOC_ROCKCHIP options appeared, so if you have a custom kernel configuration
450	targeting Rockchip SoC you need to add it so shared and mandatory drivers for
451	this SoC family will be selected.
452	Also a new rk8xx device was added, this select the base driver for Rockchip PMIC.
453
45420241223:
455	The layout of NFS file handles for the tarfs, tmpfs, cd9660, and ext2fs
456	file systems has changed.  An NFS server that exports any of these file
457	systems will need its clients to unmount and remount the exports.
458
45920241216:
460	The iwm(4) firmwares are no longer compiled as kernel modules but instead
461	shipped as raw files. For pkgbase users if you use iwm(4) you will need
462	to install the FreeBSD-firmware-iwm package.
463
46420241124:
465	The OpenBSD derived bc and dc implementations and the WITHOUT_GH_BC
466	option that allowed building them instead of the advanced version
467	imported more than 4 years ago have been removed.
468
46920241107:
470	The ng_ubt(4) driver now requires firmwares to be loaded on Realtek
471	adaptors with rtlbtfw(8) utility. It no longer attaches to devices
472	standing in bootloader mode. Firmware files are available in the
473	comms/rtlbt-firmware port.
474
47520241025:
476	The support for the rc_fast_and_loose variable has been removed from
477	rc.subr(8). Users setting rc_fast_and_loose on their systems are
478	advised to make sure their customizations to rc service scripts
479	do not depend on having a single shell environment shared across
480	all the rc service scripts during booting and shutdown.
481
48220241013:
483	The ciss driver was updated to cope better with hotplug events that
484	caused it to panic before, and to support more than 48 drives attached
485	to the card. These changes were made w/o benefit of hardware for testing
486	and ciss(4) users should be on the lookout for regressions.
487
48820240729:
489	The build now defaults to WITHOUT_CLEAN - i.e., no automatic clean
490	is performed at the beginning of buildworld or buildkernel.  The
491	WITH_CLEAN src.conf(5) knob can be used to restore the previous
492	behaviour.
493
494	If you encounter incremental build issues, please report them to the
495	freebsd-current mailing list so that a special-case dependency can be
496	added, if necessary.
497
49820240715:
499	We now lean more heavily on ACPI enumeration for some traditional
500	devices. uart has moved from isa to acpi so the hints act as wiring
501	instead of device enumeration. Hints for parallel port, floppy, etc
502	have been removed.  Before upgrading, grep your dmesg for lines like:
503		uart1: non-PNP ISA device will be removed from GENERIC in FreeBSD 15.
504	to see if you need to start including hints for the device on isa
505	in your loader.conf or device.hints file. APU1 (but not APU2) boards
506	are known to be affected, but there may be others.
507
50820240712:
509	Support for armv6 has been disconnected and is being removed.
510
51120240617:
512	ifconfig now treats IPv4 addresses without a width or mask as an error.
513	Specify the desired mask or width along with the IP address on the
514	ifconfig command line and in rc.conf.
515
51620240428:
517	OpenBSM auditing runtime (auditd, etc.) has been moved into the new
518	package FreeBSD-audit.  If you use OpenBSM auditing and pkgbase, you
519	should install FreeBSD-audit.
520
52120240424:
522	cron, lpr, and ntpd have been moved from FreeBSD-utilities into their
523	own packages.  If you use pkgbase, you should install the relevant
524	packages: FreeBSD-cron, FreeBSD-lp, or FreeBSD-ntp.
525
52620240406:
527	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
528	been upgraded to 18.1.6. It is important that you run `make delete-old`
529	as described in the COMMON ITEMS section, otherwise several libc++
530	headers that are obsolete and need to be removed can cause compilation
531	errors in C++ programs.
532
53320240205:
534	For dynamically linked programs, system calls are now made from
535	libsys rather than libc.  No change in linkage is required as
536	libsys is an auxiliary filter for libc.  People building custom
537	images must ensure that libsys.so.7 is included.
538
53920240202:
540	Loader now also read configuration files listed in local_loader_conf_files.
541	Files listed here are the last ones read. And /boot/loader.conf.local was
542	moved from loader_conf_files to local_loader_conf_files leaving only
543	loader.conf and device.hints in loader_conf_files by default.
544
545	The following sequencing is applied:
546
547	1. Bootstrap:
548	    /boot/defaults/loader.conf
549
550	2. Read loader_conf_files files:
551	    /boot/device.hints
552	    /boot/loader.conf
553
554	3. Read loader_conf_dirs files:
555	    /boot/loader.conf.d/*.conf
556
557	4. And finally, rread local_loader_conf_files files:
558	    /boot/loader.conf.local
559
56020240201:
561	sendmail 8.18.1 has been imported and merged.  This version enforces
562	stricter RFC compliance by default, especially with respect to line
563	endings.  This may cause issues with receiving messages from
564	non-compliant MTAs; please see the first 8.18.1 release note in
565	contrib/sendmail/RELEASE_NOTES for mitigations.
566
56720240111:
568	Commit cc760de2183f changed the internal interface between
569	the nfscommon and nfscl modules.  As such, both need to be
570	rebuilt from sources.  Therefore, __FreeBSD_version was
571	bumped to 1500010.
572
57320231120:
574	If you have an arm64 system that uses ACPI, you will need to update your
575	loader.efi in the ESP when you update past this point.  Detection of ACPI
576	was moved earlier in the binary so the scripts could use it, but old
577	binaries don't have this, so we default to 'no ACPI' in this case. You can
578	undisable ACPI by doing
579		OK unset hint.acpi.0.disabled
580	This can also be used to recover any other system that was updated in the
581	small window where amd64 was also broken.
582
58320231113:
584	The WITHOUT_LLD_IS_LD option has been removed.  When LLD is enabled
585	it is always installed as /usr/bin/ld.
586
58720231027:
588	Forward compatibility (running the new code on old kernels) for the
589	"ino64" project have been removed. The need for it has passed long ago.
590
59120231018:
592	Commit 57ce37f9dcd0 changed the internal KAPI between the
593	nfscommon and nfscl modules.  Both must be rebuilt from sources.
594
59520231010:
596	dialog(1) has been replaced in base by bsddialog(1), while most of the
597	time replacing a dialog(1) call by a bsddialog(1) call works out of the
598	box, bsddialog(1) is not considered as a drop-in replacement for
599	dialog(1).
600
601	If you do depend on dialog(1) functionality, please install cdialog
602	from ports:
603
604	pkg install cdialog
605
60620230927:
607	The EARLY_AP_STARTUP kernel option is mandatory on x86.  The option
608	has been added to DEFAULTS, so it should automatically be included in
609	custom kernel configurations without any additional change.
610
61120230922:
612	A new loader tunable net.pf.default_to_drop allows pf(4)’s default
613	behaviour to be changed from pass to drop. Previously this required
614	recompiling the kernel with the option PF_DEFAULT_TO_DROP.
615
61620230914:
617	Enable splitting out pkgbase manpages into separate packages by
618	default. To disable this, set WITHOUT_MANSPLITPKG=yes in src.conf.
619
62020230911:
621	Move standard include files to the clibs-dev package and move clang
622	internal libraries and headers to clang and clang-dev. Upgrading systems
623	installed using pkgbase past this change involves extra steps to allow
624	for these file moves:
625
626		pkg upgrade -y FreeBSD-utilities
627		pkg upgrade -y FreeBSD-utilities-dev
628		pkg upgrade -y
629
63020230909:
631	Enable vnet sysctl variables to be loader tunable. SYSCTLs which
632	belongs to VNETs can be initialized during early boot or module
633	loading if they are marked with CTLFLAG_TUN and there are
634	corresponding kernel environment variables.
635
63620230901:
637	The WITH_INIT_ALL_PATTERN and WITH_INIT_ALL_ZERO build options have
638	been replaced by INIT_ALL=pattern and INIT_ALL=zero respectively.
639
64020230824:
641	FreeBSD 15.0-CURRENT.
642
64320230817:
644	Serial communication (in boot loaders, kernel, and userland) has
645	been changed to default to 115200 bps, in line with common industry
646	practice and typical firmware serial console redirection
647	configuration.
648
649	Note that the early x86 BIOS bootloader (i.e., boot0sio) does not
650	support rates above 9600 bps and is not changed. boot0sio users may
651	set BOOT_COMCONSOLE_SPEED=9600 to use 9600 for all of the boot
652	components, or use the standard boot0 and have the boot2 stage start
653	with the serial port at 115200.
654
65520230807:
656	Following the general removal of MIPS support, the ath(4) AHB bus-
657	frontend has been removed, too, and building of the PCI support is
658	integrated with the ath(4) main module again. As a result, there's
659	no longer a need for if_ath_pci_load="YES" in /boot/loader.conf or
660	"device ath_pci" in the kernel configuration.
661
66220230803:
663	MAXCPU has been increased to 1024 in the amd64 GENERIC kernel config.
664	Out-of-tree kernel modules will need to be rebuilt.
665
66620230724:
667	CAM has been mechanically updated s/u_int(64|32|16|8)_t/uint\1_t/g
668	to move to the standard uintXX_t types from the old, traditional
669	BSD u_intXX_t types. This should be a NOP, but may cause problems
670	for out of tree changes. The SIMs were not updated since most of
671	the old u_intXX_t uses weren't due to CAM interfaces.
672
67320230713:
674	stable/14 branch created.
675
67620230629:
677	The heuristic for detecting old chromebooks with an EC bug that requires
678	atkbdc driver workarounds has changed. There should be no functional
679	change, but if your old chromebook's keyboard stops working, please
680	file a PR and assign it to imp.
681
68220230623:
683	OpenSSL has been updated to version 3.0, including changes throughout
684	the base system.  It is important to rebuild third-party software
685	after upgrading.
686
68720230619:
688	To enable pf rdr rules for connections initiated from the host, pf
689	filter rules can be optionally enabled for packets delivered
690	locally. This can change the behavior of rules which match packets
691	delivered to lo0. To enable this feature:
692
693		sysctl net.pf.filter_local=1
694		service pf restart
695
696	When enabled, its best to ensure that packets delivered locally are not
697	filtered, e.g. by adding a 'skip on lo' rule.
698
69920230613:
700	Improvements to libtacplus(8) mean that tacplus.conf(5) now
701	follows POSIX shell syntax rules. This may cause TACACS+
702	authentication to fail if the shared secret contains a single
703	quote, double quote, or backslash character which isn't
704	already properly quoted or escaped.
705
70620230612:
707	Belatedly switch the default nvme block device on x86 from nvd to nda.
708	nda created nvd compatibility links by default, so this should be a
709	nop. If this causes problems for your application, set hw.nvme.use_nvd=1
710	in your loader.conf or add `options NVME_USE_NVD=1` to your kernel
711	config. To disable the nvd compatibility aliases, add
712	kern.cam.nda.nvd_compat=0 to loader.conf.  The default has been nda on
713	all non-x86 platforms for some time now. If you need to fall back,
714	please email imp@freebsd.org about why.
715
716	Encrypted swap partitions need to be changed from nvd to nda if you
717	migrate, or you need to use the above to switch back to nvd.
718
71920230422:
720	Remove portsnap(8).  Users are encouraged to obtain the ports tree
721	using git instead.
722
72320230420:
724	Add jobs.mk to save typing. Enables -j${JOB_MAX} and logging
725	eg.
726		make buildworld-jobs
727	runs
728		make -j${JOB_MAX} buildworld > ../buildworld.log 2>&1
729
730	where JOB_MAX is derived from ncpus in local.sys.mk if not set in env.
731
73220230316:
733	Video related devices for some arm devices have been renamed.
734	If you have a custom kernel config and want to use hdmi output on
735	IMX6 board you need to add "device dwc_hdmi" "device imx6_hdmi" and
736	"device imx6_ipu" to it.
737	If you have a custom kernel config and want to use hdmi output on
738	TI AM335X board you need to add "device tda19988" to it.
739	If you add "device hdmi" in it you need to remove it as it doesn't
740	exist anymore.
741
74220230221:
743	Introduce new kernel options KBD_DELAY1 and KBD_DELAY2. See atkbdc(4)
744	for details.
745
74620230206:
747	sshd now defaults to having X11Forwarding disabled, following upstream.
748	Administrators who wish to enable X11Forwarding should add
749	`X11Forwarding yes` to /etc/ssh/sshd_config.
750
75120230204:
752	Since commit 75d41cb6967 Huawei 3G/4G LTE Mobile Devices do not default
753	to ECM, but NCM mode and need u3g and ucom modules loaded. See cdce(4).
754
75520230130:
756	As of commit 7c40e2d5f685, the dependency on netlink(4) has been added
757	to the linux_common(4) module. Users relying on linux_common may need
758	to compile netlink(4) module if it is not present in their kernel.
759
76020230126:
761	The WITHOUT_CXX option has been removed. C++ components in the base
762	system are now built unconditionally.
763
76420230113:
765	LinuxKPI pci.h changes may require out-of-tree drivers to be recompiled.
766	Bump _FreeBSD_version to 1400078 to be able to detect this change.
767
76820221212:
769	llvm-objdump is now always installed as objdump.  Previously there was
770	no /usr/bin/objdump unless the WITH_LLVM_BINUTILS knob was used.
771
772	Some LLVM objdump options have a different output format compared to
773	GNU objdump; readelf is available for inspecting ELF files, and GNU
774	objdump is available from the devel/binutils port or package.
775
77620221205:
777	dma(8) has replaced sendmail(8) as the default mta.  For people willing
778	to re-enable sendmail(8):
779
780	$ cp /usr/share/examples/sendmail/mailer.conf /etc/mail/mailer.conf
781
782	and add sendmail_enable="YES" to rc.conf.
783
78420221204:
785	hw.bus.disable_failed_devices has changed from 'false' to 'true' by
786	default. Now if newbus succeeds in probing a device, but fails to attach
787	the device, we'll disable the device. In the past, we'd keep retrying
788	the device on each new driver loaded. To get that behavior now, one
789	needs to use devctl to re-enable the device, and reprobe it (or set
790	the sysctl/tunable hw.bus.disable_failed_devices=false).
791
792	NOTE: This was reverted 20221205 due to unexpected compatibility issues
793
79420221122:
795	pf no longer accepts 'scrub fragment crop' or 'scrub fragment drop-ovl'.
796	These configurations are no longer automatically reinterpreted as
797	'scrub fragment reassemble'.
798
79920221121:
800	The WITHOUT_CLANG_IS_CC option has been removed.  When Clang is enabled
801	it is always installed as /usr/bin/cc (and c++, cpp).
802
80320221026:
804	Some programs have been moved into separate packages. It is recommended
805	for pkgbase users to do:
806
807	pkg install FreeBSD-dhclient FreeBSD-geom FreeBSD-resolvconf \
808	  FreeBSD-devd FreeBSD-devmatch
809
810	after upgrading to restore all the component that were previously
811	installed.
812
81320221002:
814	OPIE has been removed from the base system.  If needed, it can
815	be installed from ports (security/opie) or packages (opie).
816	Otherwise, make sure that your PAM policies do not reference
817	pam_opie or pam_opieaccess.
818
81920220610:
820	LinuxKPI pm.h changes require an update to the latest drm-kmod version
821	before re-compiling to avoid errors.
822
82320211230:
824	The macros provided for the manipulation of CPU sets (e.g. CPU_AND)
825	have been modified to take 2 source arguments instead of only 1.
826	Externally maintained sources that use these macros will have to
827	be adapted. The FreeBSD version has been bumped to 1400046 to
828	reflect this change.
829
83020211214:
831	A number of the kernel include files are able to be included by
832	themselves.  A test has been added to buildworld to enforce this.
833
83420211209:
835	Remove mips as a recognized target. This starts the decommissioning of
836	mips support in FreeBSD. mips related items will be removed wholesale in
837	the coming days and weeks.
838
839	This broke the NO_CLEAN build for some people. Either do a clean build
840	or touch
841		lib/clang/include/llvm/Config/Targets.def
842		lib/clang/include/llvm/Config/AsmParsers.def
843		lib/clang/include/llvm/Config/Disassemblers.def
844		lib/clang/include/llvm/Config/AsmPrinters.def
845	before the build to force everything to rebuild that needs to.
846
84720211202:
848	Unbound support for RFC8375: The special-use domain 'home.arpa' is
849	by default blocked. To unblock it use a local-zone nodefault
850	statement in unbound.conf:
851		local-zone: "home.arpa." nodefault
852
853	Or use another type of local-zone to override with your choice.
854
855	The reason for this is discussed in Section 6.1 of RFC8375:
856	Because 'home.arpa.' is not globally scoped and cannot be secured
857	using DNSSEC based on the root domain's trust anchor, there is no way
858	to tell, using a standard DNS query, in which homenet scope an answer
859	belongs.  Consequently, users may experience surprising results with
860	such names when roaming to different homenets.
861
86220211110:
863	Commit b8d60729deef changed the TCP congestion control framework so
864	that any of the included congestion control modules could be
865	the single module built into the kernel. Previously newreno
866	was automatically built in through direct reference. As of
867	this commit you are required to declare at least one congestion
868	control module (e.g. 'options CC_NEWRENO') and to also declare a
869	default using the CC_DEFAULT option (e.g. options CC_DEFAULT="newreno\").
870	The GENERIC configuration includes CC_NEWRENO and defines newreno
871	as the default. If no congestion control option is built into the
872	kernel and you are including networking, the kernel compile will
873	fail. Also if no default is declared the kernel compile will fail.
874
87520211118:
876	Mips has been removed from universe builds. It will be removed from the
877	tree shortly.
878
87920211106:
880	Commit f0c9847a6c47 changed the arguments for VOP_ALLOCATE.
881	The NFS modules must be rebuilt from sources and any out
882	of tree file systems that implement their own VOP_ALLOCATE
883	may need to be modified.
884
88520211022:
886	The synchronous PPP kernel driver sppp(4) has been removed.
887	The cp(4) and ce(4) drivers are now always compiled with netgraph(4)
888	support, formerly enabled by NETGRAPH_CRONYX option.
889
89020211020:
891	sh(1) is now the default shell for the root user.  To force root to use
892	the csh shell, please run the following command as root:
893
894	# chsh -s csh
895
89620211004:
897	Ncurses distribution has been split between libtinfow and libncurses
898	with libncurses.so becoming a linker (ld) script to seamlessly link
899	to libtinfow as needed. Bump _FreeBSD_version to 1400035 to reflect
900	this change.
901
90220210923:
903	As of commit 8160a0f62be6, the dummynet module no longer depends on the
904	ipfw module. Dummynet can now be used by pf as well as ipfw. As such
905	users who relied on this dependency may need to include ipfw in the
906	list of modules to load on their systems.
907
90820210922:
909	As of commit 903873ce1560, the mixer(8) utility has got a slightly
910	new syntax. Please refer to the mixer(8) manual page for more
911	information. The old mixer utility can be installed from ports:
912	audio/freebsd-13-mixer
913
91420210911:
915	As of commit 55089ef4f8bb, the global variable nfs_maxcopyrange has
916	been deleted from the nfscommon.ko.  As such, nfsd.ko must be built
917	from up to date sources to avoid an undefined reference when
918	being loaded.
919
92020210817:
921	As of commit 62ca9fc1ad56 OpenSSL no longer enables kernel TLS
922	by default.  Users can enable kernel TLS via the "KTLS" SSL
923	option.  This can be enabled globally by using a custom
924	OpenSSL config file via OPENSSL_CONF or via an
925	application-specific configuration option for applications
926	which permit setting SSL options via SSL_CONF_cmd(3).
927
92820210811:
929	Commit 3ad1e1c1ce20 changed the internal KAPI between the NFS
930	modules. Therefore, all need to be rebuilt from sources.
931
93220210730:
933	Commit b69019c14cd8 removes pf's DIOCGETSTATESNV ioctl.
934	As of be70c7a50d32 it is no longer used by userspace, but it does mean
935	users may not be able to enumerate pf states if they update the kernel
936	past b69019c14cd8 without first updating userspace past be70c7a50d32.
937
93820210729:
939	As of commit 01ad0c007964 if_bridge member interfaces can no longer
940	change their MTU. Changing the MTU of the bridge itself will change the
941	MTU on all member interfaces instead.
942
94320210716:
944	Commit ee29e6f31111 changed the internal KAPI between the nfscommon
945	and nfsd modules. Therefore, both need to be rebuilt from sources.
946	Bump __FreeBSD_version to 1400026 for this KAPI change.
947
94820210715:
949	The 20210707 awk update brought in a change in behavior. This has
950	been corrected as of d4d252c49976. Between these dates, if you
951	installed a new awk binary, you may not be able to build a new
952	kernel because the change in behavior affected the genoffset
953	script used to build the kernel. If you did update, the fix is
954	to update your sources past the above hash and do
955		% cd usr.bin/awk
956		% make clean all
957		% sudo -E make install
958	to enable building kernels again.
959
96020210708:
961	Commit 1e0a518d6548 changed the internal KAPI between the NFS
962	modules. They all need to be rebuilt from sources.  I did not
963	bump __FreeBSD_version, since it was bumped recently.
964
96520210707:
966	awk has been updated to the latest one-true-awk version 20210215.
967	This contains a number of minor bug fixes.
968
96920210624:
970	The NFSv4 client now uses the highest minor version of NFSv4
971	supported by the NFSv4 server by default instead of minor version 0,
972	for NFSv4 mounts.
973	The "minorversion" mount option may be used to override this default.
974
97520210618:
976	Bump __FreeBSD_version to 1400024 for LinuxKPI changes.
977	Most notably netdev.h can change now as the (last) dependencies
978	(mlx4/ofed) are now using struct ifnet directly, but also for PCI
979	additions and others.
980
98120210618:
982	The directory "blacklisted" under /usr/share/certs/ has been
983	renamed to "untrusted".
984
98520210611:
986	svnlite has been removed from base. Should you need svn for any reason
987	please install the svn package or port.
988
98920210611:
990	Commit e1a907a25cfa changed the internal KAPI between the krpc
991	and nfsserver.  As such, both modules must be rebuilt from
992	sources.  Bump __FreeBSD_version to 1400022.
993
99420210610:
995	The an(4) driver has been removed from FreeBSD.
996
99720210608:
998	The vendor/openzfs branch was renamed to vendor/openzfs/legacy to
999	start tracking OpenZFS upstream more closely. Please see
1000https://lists.freebsd.org/archives/freebsd-current/2021-June/000153.html
1001	for details on how to correct any errors that might result. The
1002	short version is that you need to remove the old branch locally:
1003	    git update-ref -d refs/remotes/freebsd/vendor/openzfs
1004	(assuming your upstream origin is named 'freebsd').
1005
100620210525:
1007	Commits 17accc08ae15 and de102f870501 add new files to LinuxKPI
1008	which break drm-kmod.  In addition various other additions where
1009	committed. Bump __FreeBSD_version to 1400015 to be able to
1010	detect this.
1011
101220210513:
1013	Commit ca179c4d74f2 changed the package in which the OpenSSL
1014	libraries and utilities are packaged.
1015	It is recommended for pkgbase user to do:
1016	pkg install -f FreeBSD-openssl
1017	before pkg upgrade otherwise some dependencies might not be met
1018	and pkg will stop working as libssl will not be present anymore
1019	on the system.
1020
102120210426:
1022	Commit 875977314881 changed the internal KAPI between
1023	the nfsd and nfscommon modules.  As such these modules
1024	need to be rebuilt from sources.
1025	Without this patch in your NFSv4.1/4.2 server, enabling
1026	delegations by setting vfs.nfsd.issue_delegations non-zero
1027	is not recommended.
1028
102920210411:
1030	Commit 7763814fc9c2 changed the internal KAPI between
1031	the krpc and NFS.  As such, the krpc, nfscommon and
1032	nfscl modules must all be rebuilt from sources.
1033	Without this patch, NFSv4.1/4.2 mounts should not
1034	be done with the nfscbd(8) daemon running, to avoid
1035	needing a working back channel for server->client RPCs.
1036
103720210330:
1038	Commit 01ae8969a9ee fixed the NFSv4.1/4.2 server so that it
1039	handles binding of the back channel as required by RFC5661.
1040	Until this patch is in your server, avoid use of the "nconnects"
1041	mount option for Linux NFSv4.1/4.2 mounts.
1042
104320210225:
1044	For 64-bit architectures the base system is now built with Position
1045	Independent Executable (PIE) support enabled by default.  It may be
1046	disabled using the WITHOUT_PIE knob.  A clean build is required.
1047
104820210128:
1049	Various LinuxKPI functionality was added which conflicts with DRM.
1050	Please update your drm-kmod port to after the __FreeBSD_version 1400003
1051	update.
1052
105320210121:
1054	stable/13 branch created.
1055
105620210108:
1057	PC Card attachments for all devices have been removed. In the case of
1058	wi and cmx, the entire drivers were removed because they were only
1059	PC Card devices. FreeBSD_version 1300134 should be used for this
1060	since it was bumped so recently.
1061
106220210107:
1063	Transport-independent parts of HID support have been split off the USB
1064	code in to separate subsystem.  Kernel configs which include one of
1065	ums, ukbd, uhid, atp, wsp, wmt, uaudio, ugold or ucycom drivers should
1066	be updated with adding of "device hid" line.
1067
106820210105:
1069	ncurses installation has been modified to only keep the widechar
1070	enabled version.  Incremental build is broken for that change, so it
1071	requires a clean build.
1072
107320201223:
1074	The FreeBSD project has migrated from Subversion to Git. Temporary
1075	instructions can be found at
1076	https://github.com/bsdimp/freebsd-git-docs/blob/main/src-cvt.md
1077	and other documents in that repo.
1078
107920201216:
1080	The services database has been updated to cover more of the basic
1081	services expected in a modern system. The database is big enough
1082	that it will cause issues in mergemaster in Releases previous to
1083	12.2 and 11.3, or in very old current systems from before r358154.
1084
108520201215:
1086	Obsolete in-tree GDB 6.1.1 has been removed.  GDB (including kgdb)
1087	may be installed from ports or packages.
1088
108920201124:
1090	ping6 has been merged into ping.  It can now be called as "ping -6".
1091	See ping(8) for details.
1092
109320201108:
1094	Default value of net.add_addr_allfibs has been changed to 0.
1095	If you have multi-fib configuration and rely on existence of all
1096	interface routes in every fib, you need to set the above sysctl to 1.
1097
109820201030:
1099	The internal pre-processor in the calendar(1) program has been
1100	extended to support more C pre-processor commands (e.g. #ifdef, #else,
1101	and #undef) and to detect unbalanced conditional statements.
1102	Error messages have been extended to include the filename and line
1103	number if processing stops to help fixing malformed data files.
1104
110520201026:
1106	All the data files for the calendar(1) program, except calendar.freebsd,
1107	have been moved to the deskutils/calendar-data port, much like the
1108	jewish calendar entries were moved to deskutils/hebcal years ago. After
1109	make delete-old-files, you need to install it to retain full
1110	functionality. calendar(1) will issue a reminder for files it can't
1111	find.
1112
111320200923:
1114	LINT files are no longer generated. We now include the relevant NOTES
1115	files. Note: This may cause conflicts with updating in some cases.
1116	        find sys -name LINT\* -delete
1117	is suggested across this commit	to remove the generated	LINT files.
1118
1119	If you have tried to update with generated files there, the svn
1120	command you want to un-auger the tree is
1121		cd sys/amd64/conf
1122		svn revert -R .
1123	and then do the above find from the top level. Substitute 'amd64'
1124	above with where the error message indicates a conflict.
1125
112620200824:
1127	OpenZFS support has been integrated. Do not upgrade root pools until
1128	the loader is updated to support zstd. Furthermore, we caution against
1129	'zpool upgrade' for the next few weeks. The change should be transparent
1130	unless you  want to use new features.
1131
1132	Not all "NO_CLEAN" build scenarios work across these changes. Many
1133	scenarios have been tested and fixed, but rebuilding kernels without
1134	rebuilding world may fail.
1135
1136	The ZFS cache file has moved from /boot to /etc to match the OpenZFS
1137	upstream default. A fallback to /boot has been added for mountroot.
1138
1139	Pool auto import behavior at boot has been moved from the kernel module
1140	to an explicit "zpool import -a" in one of the rc scripts enabled by
1141	zfs_enable=YES. This means your non-root zpools won't auto import until
1142	you upgrade your /etc/rc.d files.
1143
114420200824:
1145	The resume code now notifies devd with the 'kernel' system
1146	rather than the old 'kern' subsystem to be consistent with
1147	other use. The old notification will be created as well, but
1148	will be removed prior to FreeBSD 14.0.
1149
115020200821:
1151	r362275 changed the internal API between the kernel RPC and the
1152	NFS modules. As such, all the modules must be recompiled from
1153	sources.
1154
115520200817:
1156	r364330 modified the internal API used between the NFS modules.
1157	As such, all the NFS modules must be re-compiled from sources.
1158
115920200816:
1160	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1161	been upgraded to 11.0.0.  Please see the 20141231 entry below for
1162	information about prerequisites and upgrading, if you are not already
1163	using clang 3.5.0 or higher.
1164
116520200810:
1166	r364092 modified the internal ABI used between the kernel NFS
1167	modules.  As such, all of these modules need to be rebuilt
1168	from sources, so a version bump was done.
1169
117020200807:
1171	Makefile.inc has been updated to work around the issue documented in
1172	20200729. It was a case where the optimization of using symbolic links
1173	to point to binaries created a situation where we'd run new binaries
1174	with old libraries starting midway through the installworld process.
1175
117620200729:
1177	r363679 has redefined some undefined behavior in regcomp(3); notably,
1178	extraneous escapes of most ordinary characters will no longer be
1179	accepted.  An exp-run has identified all of the problems with this in
1180	ports, but other non-ports software may need extra escapes removed to
1181	continue to function.
1182
1183	Because of this change, installworld may encounter the following error
1184	from rtld: Undefined symbol "regcomp@FBSD_1.6" -- It is imperative that
1185	you do not halt installworld. Instead, let it run to completion (whether
1186	successful or not) and run installworld once more.
1187
118820200627:
1189	A new implementation of bc and dc has been imported in r362681. This
1190	implementation corrects non-conformant behavior of the previous bc
1191	and adds GNU bc compatible options. It offers a number of extensions,
1192	is much faster on large values, and has support for message catalogs
1193	(a number of languages are already supported, contributions of further
1194	languages welcome). The option WITHOUT_GH_BC can be used to build the
1195	world with the previous versions of bc and dc.
1196
119720200625:
1198	r362639 changed the internal API used between the NFS kernel modules.
1199	As such, they all need to be rebuilt from sources.
1200
120120200613:
1202	r362158 changed the arguments for VFS_CHECKEXP().  As such, any
1203	out of tree file systems need to be modified and rebuilt.
1204	Also, any file systems that are modules must be rebuilt.
1205
120620200604:
1207	read(2) of a directory fd is now rejected by default.  root may
1208	re-enable it for system root only on non-ZFS filesystems with the
1209	security.bsd.allow_read_dir sysctl(8) MIB if
1210	security.bsd.suser_enabled=1.
1211
1212	It may be advised to setup aliases for grep to default to `-d skip` if
1213	commonly non-recursively grepping a list that includes directories and
1214	the potential for the resulting stderr output is not tolerable.  Example
1215	aliases are now installed, commented out, in /root/.cshrc and
1216	/root/.shrc.
1217
121820200523:
1219	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1220	been upgraded to 10.0.1.  Please see the 20141231 entry below for
1221	information about prerequisites and upgrading, if you are not already
1222	using clang 3.5.0 or higher.
1223
122420200512:
1225	Support for obsolete compilers has been removed from the build system.
1226	Clang 6 and GCC 6.4 are the minimum supported versions.
1227
122820200424:
1229	closefrom(2) has been moved under COMPAT12, and replaced in libc with a
1230	stub that calls close_range(2).  If using a custom kernel configuration,
1231	you may want to ensure that the COMPAT_FREEBSD12 option is included, as
1232	a slightly older -CURRENT userland and older FreeBSD userlands may not
1233	be functional without closefrom(2).
1234
123520200414:
1236	Upstream DTS from Linux 5.6 was merged and they now have the SID
1237	and THS (Secure ID controller and THermal Sensor) node present.
1238	The DTB overlays have now been removed from the tree for the H3/H5 and
1239	A64 SoCs and the aw_sid and aw_thermal driver have been updated to
1240	deal with upstream DTS. If you are using those overlays you need to
1241	remove them from loader.conf and update the DTBs on the FAT partition.
1242
124320200310:
1244	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1245	been upgraded to 10.0.0.  Please see the 20141231 entry below for
1246	information about prerequisites and upgrading, if you are not already
1247	using clang 3.5.0 or higher.
1248
124920200309:
1250	The amd(8) automount daemon has been removed from the source tree.
1251	As of FreeBSD 10.1 autofs(5) is the preferred tool for automounting.
1252	amd is still available in the sysutils/am-utils port.
1253
125420200301:
1255	Removed brooktree driver (bktr.4) from the tree.
1256
125720200229:
1258	The WITH_GPL_DTC option has been removed.  The BSD-licenced device tree
1259	compiler in usr.bin/dtc is used on all architectures which use dtc, and
1260	the GPL dtc is available (if needed) from the sysutils/dtc port.
1261
126220200229:
1263	The WITHOUT_LLVM_LIBUNWIND option has been removed.  LLVM's libunwind
1264	is used by all supported CPU architectures.
1265
126620200229:
1267	GCC 4.2.1 has been removed from the tree.  The WITH_GCC,
1268	WITH_GCC_BOOTSTRAP, and WITH_GNUCXX options are no longer available.
1269	Users who wish to build FreeBSD with GCC must use the external toolchain
1270	ports or packages.
1271
127220200220:
1273	ncurses has been updated to a newer version (6.2-20200215). Given the ABI
1274	has changed, users will have to rebuild all the ports that are linked to
1275	ncurses.
1276
127720200217:
1278	The size of struct vnet and the magic cookie have changed.
1279	Users need to recompile libkvm and all modules using VIMAGE
1280	together with their new kernel.
1281
128220200212:
1283	Defining the long deprecated NO_CTF, NO_DEBUG_FILES, NO_INSTALLLIB,
1284	NO_MAN, NO_PROFILE, and NO_WARNS variables is now an error.  Update
1285	your Makefiles and scripts to define MK_<var>=no instead as required.
1286
1287	One exception to this is that program or library Makefiles should
1288	define MAN to empty rather than setting MK_MAN=no.
1289
129020200108:
1291	Clang/LLVM is now the default compiler and LLD the default
1292	linker for riscv64.
1293
129420200107:
1295	make universe no longer uses GCC 4.2.1 on any architectures.
1296	Architectures not supported by in-tree Clang/LLVM require an
1297	external toolchain package.
1298
129920200104:
1300	GCC 4.2.1 is now not built by default, as part of the GCC 4.2.1
1301	retirement plan.  Specifically, the GCC, GCC_BOOTSTRAP, and GNUCXX
1302	options default to off for all supported CPU architectures.  As a
1303	short-term transition aid they may be enabled via WITH_* options.
1304	GCC 4.2.1 is expected to be removed from the tree on 2020-03-31.
1305
130620200102:
1307	Support for armv5 has been disconnected and is being removed. The
1308	machine combination MACHINE=arm MACHINE_ARCH=arm is no longer valid.
1309	You must now use a MACHINE_ARCH of armv6 or armv7. The default
1310	MACHINE_ARCH for MACHINE=arm is now armv7.
1311
131220191226:
1313	Clang/LLVM is now the default compiler for all powerpc architectures.
1314	LLD is now the default linker for powerpc64.  The change for powerpc64
1315	also includes a change to the ELFv2 ABI, incompatible with the existing
1316	ABI.
1317
131820191226:
1319	Kernel-loadable random(4) modules are no longer unloadable.
1320
132120191222:
1322	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1323	been upgraded to 9.0.1.  Please see the 20141231 entry below for
1324	information about prerequisites and upgrading, if you are not already
1325	using clang 3.5.0 or higher.
1326
132720191212:
1328	r355677 has modified the internal interface used between the
1329	NFS modules in the kernel. As such, they must all be upgraded
1330	simultaneously. I will do a version bump for this.
1331
133220191205:
1333	The root certificates of the Mozilla CA Certificate Store have been
1334	imported into the base system and can be managed with the certctl(8)
1335	utility.  If you have installed the security/ca_root_nss port or package
1336	with the ETCSYMLINK option (the default), be advised that there may be
1337	differences between those included in the port and those included in
1338	base due to differences in nss branch used as well as general update
1339	frequency.  Note also that certctl(8) cannot manage certs in the
1340	format used by the security/ca_root_nss port.
1341
134220191120:
1343	The amd(8) automount daemon has been disabled by default, and will be
1344	removed in the future.  As of FreeBSD 10.1 the autofs(5) is available
1345	for automounting.
1346
134720191107:
1348	The nctgpio and wbwd drivers have been moved to the superio bus.
1349	If you have one of these drivers in a kernel configuration, then
1350	you should add device superio to it.  If you use one of these drivers
1351	as a module and you compile a custom set of modules, then you should
1352	add superio to the set.
1353
135420191021:
1355	KPIs for network drivers to access interface addresses have changed.
1356	Users need to recompile NIC driver modules together with kernel.
1357
135820191021:
1359	The net.link.tap.user_open sysctl no longer prevents user opening of
1360	already created /dev/tapNN devices.  Access is still controlled by
1361	node permissions, just like tun devices.  The net.link.tap.user_open
1362	sysctl is now used only to allow users to perform devfs cloning of
1363	tap devices, and the subsequent open may not succeed if the user is not
1364	in the appropriate group.  This sysctl may be deprecated/removed
1365	completely in the future.
1366
136720191009:
1368	mips, powerpc, and sparc64 are no longer built as part of
1369	universe / tinderbox unless MAKE_OBSOLETE_GCC is defined. If
1370	not defined, mips, powerpc, and sparc64 builds will look for
1371	the xtoolchain binaries and if installed use them for universe
1372	builds. As llvm 9.0 becomes vetted for these architectures, they
1373	will be removed from the list.
1374
137520191009:
1376	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1377	been upgraded to 9.0.0.  Please see the 20141231 entry below for
1378	information about prerequisites and upgrading, if you are not already
1379	using clang 3.5.0 or higher.
1380
138120191003:
1382	The hpt27xx, hptmv, hptnr, and hptrr drivers have been removed from
1383	GENERIC.  They are available as modules and can be loaded by adding
1384	to /boot/loader.conf hpt27xx_load="YES", hptmv_load="YES",
1385	hptnr_load="YES", or hptrr_load="YES", respectively.
1386
138720190913:
1388	ntpd no longer by default locks its pages in memory, allowing them
1389	to be paged out by the kernel. Use rlimit memlock to restore
1390	historic BSD behaviour. For example, add "rlimit memlock 32"
1391	to ntp.conf to lock up to 32 MB of ntpd address space in memory.
1392
139320190823:
1394	Several of ping6's options have been renamed for better consistency
1395	with ping.  If you use any of -ARWXaghmrtwx, you must update your
1396	scripts.  See ping6(8) for details.
1397
139820190727:
1399	The vfs.fusefs.sync_unmount and vfs.fusefs.init_backgrounded sysctls
1400	and the "-o sync_unmount" and "-o init_backgrounded" mount options have
1401	been removed from mount_fusefs(8).  You can safely remove them from
1402	your scripts, because they had no effect.
1403
1404	The vfs.fusefs.fix_broken_io, vfs.fusefs.sync_resize,
1405	vfs.fusefs.refresh_size, vfs.fusefs.mmap_enable,
1406	vfs.fusefs.reclaim_revoked, and vfs.fusefs.data_cache_invalidate
1407	sysctls have been removed.  If you felt the need to set any of them to
1408	a non-default value, please tell asomers@FreeBSD.org why.
1409
141020190713:
1411	Default permissions on the /var/account/acct file (and copies of it
1412	rotated by periodic daily scripts) are changed from 0644 to 0640
1413	because the file contains sensitive information that should not be
1414	world-readable.  If the /var/account directory must be created by
1415	rc.d/accounting, the mode used is now 0750.  Admins who use the
1416	accounting feature are encouraged to change the mode of an existing
1417	/var/account directory to 0750 or 0700.
1418
141920190620:
1420	Entropy collection and the /dev/random device are no longer optional
1421	components.  The "device random" option has been removed.
1422	Implementations of distilling algorithms can still be made loadable
1423	with "options RANDOM_LOADABLE" (e.g., random_fortuna.ko).
1424
142520190612:
1426	Clang, llvm, lld, lldb, compiler-rt, libc++, libunwind and openmp have
1427	been upgraded to 8.0.1.  Please see the 20141231 entry below for
1428	information about prerequisites and upgrading, if you are not already
1429	using clang 3.5.0 or higher.
1430
143120190608:
1432	A fix was applied to i386 kernel modules to avoid panics with
1433	dpcpu or vnet.  Users need to recompile i386 kernel modules
1434	having pcpu or vnet sections or they will refuse to load.
1435
143620190513:
1437	User-wired pages now have their own counter,
1438	vm.stats.vm.v_user_wire_count.  The vm.max_wired sysctl was renamed
1439	to vm.max_user_wired and changed from an unsigned int to an unsigned
1440	long.  bhyve VMs wired with the -S are now subject to the user
1441	wiring limit; the vm.max_user_wired sysctl may need to be tuned to
1442	avoid running into the limit.
1443
144420190507:
1445	The IPSEC option has been removed from GENERIC.  Users requiring
1446	ipsec(4) must now load the ipsec(4) kernel module.
1447
144820190507:
1449	The tap(4) driver has been folded into tun(4), and the module has been
1450	renamed to tuntap.  You should update any kld_list="if_tap" or
1451	kld_list="if_tun" entries in /etc/rc.conf, if_tap_load="YES" or
1452	if_tun_load="YES" entries in /boot/loader.conf to load the if_tuntap
1453	module instead, and "device tap" or "device tun" entries in kernel
1454	config files to select the tuntap device instead.
1455
145620190418:
1457	The following knobs have been added related to tradeoffs between
1458	safe use of the random device and availability in the absence of
1459	entropy:
1460
1461	kern.random.initial_seeding.bypass_before_seeding: tunable; set
1462	non-zero to bypass the random device prior to seeding, or zero to
1463	block random requests until the random device is initially seeded.
1464	For now, set to 1 (unsafe) by default to restore pre-r346250 boot
1465	availability properties.
1466
1467	kern.random.initial_seeding.read_random_bypassed_before_seeding:
1468	read-only diagnostic sysctl that is set when bypass is enabled and
1469	read_random(9) is bypassed, to enable programmatic handling of this
1470	initial condition, if desired.
1471
1472	kern.random.initial_seeding.arc4random_bypassed_before_seeding:
1473	Similar to the above, but for arc4random(9) initial seeding.
1474
1475	kern.random.initial_seeding.disable_bypass_warnings: tunable; set
1476	non-zero to disable warnings in dmesg when the same conditions are
1477	met as for the diagnostic sysctls above.  Defaults to zero, i.e.,
1478	produce warnings in dmesg when the conditions are met.
1479
148020190416:
1481	The loadable random module KPI has changed; the random_infra_init()
1482	routine now requires a 3rd function pointer for a bool (*)(void)
1483	method that returns true if the random device is seeded (and
1484	therefore unblocked).
1485
148620190404:
1487	r345895 reverts r320698. This implies that an nfsuserd(8) daemon
1488	built from head sources between r320757 (July 6, 2017) and
1489	r338192 (Aug. 22, 2018) will not work unless the "-use-udpsock"
1490	is added to the command line.
1491	nfsuserd daemons built from head sources that are post-r338192 are
1492	not affected and should continue to work.
1493
149420190320:
1495	The fuse(4) module has been renamed to fusefs(4) for consistency with
1496	other filesystems.  You should update any kld_load="fuse" entries in
1497	/etc/rc.conf, fuse_load="YES" entries in /boot/loader.conf, and
1498	"options FUSE" entries in kernel config files.
1499
150020190304:
1501	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
1502	8.0.0.  Please see the 20141231 entry below for information about
1503	prerequisites and upgrading, if you are not already using clang 3.5.0
1504	or higher.
1505
150620190226:
1507	geom_uzip(4) depends on the new module xz.  If geom_uzip is statically
1508	compiled into your custom kernel, add 'device xz' statement to the
1509	kernel config.
1510
151120190219:
1512	drm and drm2 have been removed from the tree. Please see
1513	https://wiki.freebsd.org/Graphics for the latest information on
1514	migrating to the drm ports.
1515
151620190131:
1517	Iflib is no longer unconditionally compiled into the kernel.  Drivers
1518	using iflib and statically compiled into the kernel, now require
1519	the 'device iflib' config option.  For the same drivers loaded as
1520	modules on kernels not having 'device iflib', the iflib.ko module
1521	is loaded automatically.
1522
152320190125:
1524	The IEEE80211_AMPDU_AGE and AH_SUPPORT_AR5416 kernel configuration
1525	options no longer exist since r343219 and r343427 respectively;
1526	nothing uses them, so they should be just removed from custom
1527	kernel config files.
1528
152920181230:
1530	r342635 changes the way efibootmgr(8) works by requiring users to add
1531	the -b (bootnum) parameter for commands where the bootnum was previously
1532	specified with each option. For example 'efibootmgr -B 0001' is now
1533	'efibootmgr -B -b 0001'.
1534
153520181220:
1536	r342286 modifies the NFSv4 server so that it obeys vfs.nfsd.nfs_privport
1537	in the same as it is applied to NFSv2 and 3.  This implies that NFSv4
1538	servers that have vfs.nfsd.nfs_privport set will only allow mounts
1539	from clients using a reserved port. Since both the FreeBSD and Linux
1540	NFSv4 clients use reserved ports by default, this should not affect
1541	most NFSv4 mounts.
1542
154320181219:
1544	The XLP config has been removed. We can't support 64-bit atomics in this
1545	kernel because it is running in 32-bit mode. XLP users must transition
1546	to running a 64-bit kernel (XLP64 or XLPN32).
1547
1548	The mips GXEMUL support has been removed from FreeBSD. MALTA* + qemu is
1549	the preferred emulator today and we don't need two different ones.
1550
1551	The old sibyte / swarm / Broadcom BCM1250 support has been
1552	removed from the mips port.
1553
155420181211:
1555	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
1556	7.0.1.  Please see the 20141231 entry below for information about
1557	prerequisites and upgrading, if you are not already using clang 3.5.0
1558	or higher.
1559
156020181211:
1561	Remove the timed and netdate programs from the base tree.  Setting
1562	the time with these daemons has been obsolete for over a decade.
1563
156420181126:
1565	On amd64, arm64 and armv7 (architectures that install LLVM's ld.lld
1566	linker as /usr/bin/ld) GNU ld is no longer installed as ld.bfd, as
1567	it produces broken binaries when ifuncs are in use.  Users needing
1568	GNU ld should install the binutils port or package.
1569
157020181123:
1571	The BSD crtbegin and crtend code has been enabled by default. It has
1572	had extensive testing on amd64, arm64, and i386. It can be disabled
1573	by building a world with -DWITHOUT_BSD_CRTBEGIN.
1574
157520181115:
1576	The set of CTM commands (ctm, ctm_smail, ctm_rmail, ctm_dequeue)
1577	has been converted to a port (misc/ctm) and will be removed from
1578	FreeBSD-13.  It is available as a package (ctm) for all supported
1579	FreeBSD versions.
1580
158120181110:
1582	The default newsyslog.conf(5) file has been changed to only include
1583	files in /etc/newsyslog.conf.d/ and /usr/local/etc/newsyslog.conf.d/ if
1584	the filenames end in '.conf' and do not begin with a '.'.
1585
1586	You should check the configuration files in these two directories match
1587	this naming convention. You can verify which configuration files are
1588	being included using the command:
1589		$ newsyslog -Nrv
1590
159120181019:
1592	Stable/12 was branched created.
1593
159420181015:
1595	Ports for the DRM modules have been simplified. Now, amd64 users should
1596	just install the drm-kmod port. All others should install
1597	drm-legacy-kmod.
1598
1599	Graphics hardware that's newer than about 2010 usually works with
1600	drm-kmod.  For hardware older than 2013, however, some users will need
1601	to use drm-legacy-kmod if drm-kmod doesn't work for them. Hardware older
1602	than 2008 usually only works in drm-legacy-kmod. The graphics team can
1603	only commit to hardware made since 2013 due to the complexity of the
1604	market and difficulty to test all the older cards effectively. If you
1605	have hardware supported by drm-kmod, you are strongly encouraged to use
1606	that as you will get better support.
1607
1608	Other than KPI chasing, drm-legacy-kmod will not be updated. As outlined
1609	elsewhere, the drm and drm2 modules will be eliminated from the src base
1610	soon (with a limited exception for arm). Please update to the package
1611	asap and report any issues to x11@freebsd.org.
1612
1613	Generally, anybody using the drm*-kmod packages should add
1614	WITHOUT_DRM_MODULE=t and WITHOUT_DRM2_MODULE=t to avoid nasty
1615	cross-threading surprises, especially with automatic driver
1616	loading from X11 startup. These will become the defaults in 13-current
1617	shortly.
1618
161920181012:
1620	The ixlv(4) driver has been renamed to iavf(4).  As a consequence,
1621	custom kernel and module loading configuration files must be updated
1622	accordingly.  Moreover, interfaces previous presented as ixlvN to the
1623	system are now exposed as iavfN and network configuration files must
1624	be adjusted as necessary.
1625
162620181009:
1627	OpenSSL has been updated to version 1.1.1.  This update included
1628	additional various API changes throughout the base system.  It is
1629	important to rebuild third-party software after upgrading.  The value
1630	of __FreeBSD_version has been bumped accordingly.
1631
163220181006:
1633	The legacy DRM modules and drivers have now been added to the loader's
1634	module blacklist, in favor of loading them with kld_list in rc.conf(5).
1635	The module blacklist may be overridden with the loader.conf(5)
1636	'module_blacklist' variable, but loading them via rc.conf(5) is strongly
1637	encouraged.
1638
163920181002:
1640	The cam(4) based nda(4) driver will be used over nvd(4) by default on
1641	powerpc64. You may set 'options NVME_USE_NVD=1' in your kernel conf or
1642	loader tunable 'hw.nvme.use_nvd=1' if you wish to use the existing
1643	driver.  Make sure to edit /boot/etc/kboot.conf and fstab to use the
1644	nda device name.
1645
164620180913:
1647	Reproducible build mode is now on by default, in preparation for
1648	FreeBSD 12.0.  This eliminates build metadata such as the user,
1649	host, and time from the kernel (and uname), unless the working tree
1650	corresponds to a modified checkout from a version control system.
1651	The previous behavior can be obtained by setting the /etc/src.conf
1652	knob WITHOUT_REPRODUCIBLE_BUILD.
1653
165420180826:
1655	The Yarrow CSPRNG has been removed from the kernel as it has not been
1656	supported by its designers since at least 2003. Fortuna has been the
1657	default since FreeBSD-11.
1658
165920180822:
1660	devctl freeze/thaw have gone into the tree, the rc scripts have been
1661	updated to use them and devmatch has been changed.  You should update
1662	kernel, userland and rc scripts all at the same time.
1663
166420180818:
1665	The default interpreter has been switched from 4th to Lua.
1666	LOADER_DEFAULT_INTERP, documented in build(7), will override the default
1667	interpreter.  If you have custom FORTH code you will need to set
1668	LOADER_DEFAULT_INTERP=4th (valid values are 4th, lua or simp) in
1669	src.conf for the build.  This will create default hard links between
1670	loader and loader_4th instead of loader and loader_lua, the new default.
1671	If you are using UEFI it will create the proper hard link to loader.efi.
1672
1673	bhyve uses userboot.so. It remains 4th-only until some issues are solved
1674	regarding coexisting with multiple versions of FreeBSD are resolved.
1675
167620180815:
1677	ls(1) now respects the COLORTERM environment variable used in other
1678	systems and software to indicate that a colored terminal is both
1679	supported and desired.  If ls(1) is suddenly emitting colors, they may
1680	be disabled again by either removing the unwanted COLORTERM from your
1681	environment, or using `ls --color=never`.  The ls(1) specific CLICOLOR
1682	may not be observed in a future release.
1683
168420180808:
1685	The default pager for most commands has been changed to "less".  To
1686	restore the old behavior, set PAGER="more" and MANPAGER="more -s" in
1687	your environment.
1688
168920180731:
1690	The jedec_ts(4) driver has been removed. A superset of its functionality
1691	is available in the jedec_dimm(4) driver, and the manpage for that
1692	driver includes migration instructions. If you have "device jedec_ts"
1693	in your kernel configuration file, it must be removed.
1694
169520180730:
1696	amd64/GENERIC now has EFI runtime services, EFIRT, enabled by default.
1697	This should have no effect if the kernel is booted via BIOS/legacy boot.
1698	EFIRT may be disabled via a loader tunable, efi.rt.disabled, if a system
1699	has a buggy firmware that prevents a successful boot due to use of
1700	runtime services.
1701
170220180727:
1703	Atmel AT91RM9200 and AT91SAM9, Cavium CNS 11xx and XScale
1704	support has been removed from the tree. These ports were
1705	obsolete and/or known to be broken for many years.
1706
170720180723:
1708	loader.efi has been augmented to participate more fully in the
1709	UEFI boot manager protocol. loader.efi will now look at the
1710	BootXXXX environment variable to determine if a specific kernel
1711	or root partition was specified. XXXX is derived from BootCurrent.
1712	efibootmgr(8) manages these standard UEFI variables.
1713
171420180720:
1715	zfsloader's functionality has now been folded into loader.
1716	zfsloader is no longer necessary once you've updated your
1717	boot blocks. For a transition period, we will install a
1718	hardlink for zfsloader to loader to allow a smooth transition
1719	until the boot blocks can be updated (hard link because old
1720	zfs boot blocks don't understand symlinks).
1721
172220180719:
1723	ARM64 now have efifb support, if you want to have serial console
1724	on your arm64 board when an screen is connected and the bootloader
1725	setup a frame buffer for us to use, just add :
1726	boot_serial=YES
1727	boot_multicons=YES
1728	in /boot/loader.conf
1729	For Raspberry Pi 3 (RPI) users, this is needed even if you don't have
1730	an screen connected as the firmware will setup a frame buffer are that
1731	u-boot will expose as an EFI frame buffer.
1732
173320180719:
1734	New uid:gid added, ntpd:ntpd (123:123).  Be sure to run mergemaster
1735	or take steps to update /etc/passwd before doing installworld on
1736	existing systems.  Do not skip the "mergemaster -Fp" step before
1737	installworld, as described in the update procedures near the bottom
1738	of this document.  Also, rc.d/ntpd now starts ntpd(8) as user ntpd
1739	if the new mac_ntpd(4) policy is available, unless ntpd_flags or
1740	the ntp config file contain options that change file/dir locations.
1741	When such options (e.g., "statsdir" or "crypto") are used, ntpd can
1742	still be run as non-root by setting ntpd_user=ntpd in rc.conf, after
1743	taking steps to ensure that all required files/dirs are accessible
1744	by the ntpd user.
1745
174620180717:
1747	Big endian arm support has been removed.
1748
174920180711:
1750	The static environment setup in kernel configs is no longer mutually
1751	exclusive with the loader(8) environment by default.  In order to
1752	restore the previous default behavior of disabling the loader(8)
1753	environment if a static environment is present, you must specify
1754	loader_env.disabled=1 in the static environment.
1755
175620180705:
1757	The ABI of syscalls used by management tools like sockstat and
1758	netstat has been broken to allow 32-bit binaries to work on
1759	64-bit kernels without modification.  These programs will need
1760	to match the kernel in order to function.  External programs may
1761	require minor modifications to accommodate a change of type in
1762	structures from pointers to 64-bit virtual addresses.
1763
176420180702:
1765	On i386 and amd64 atomics are now inlined. Out of tree modules using
1766	atomics will need to be rebuilt.
1767
176820180701:
1769	The '%I' format in the kern.corefile sysctl limits the number of
1770	core files that a process can generate to the number stored in the
1771	debug.ncores sysctl. The '%I' format is replaced by the single digit
1772	index. Previously, if all indexes were taken the kernel would overwrite
1773	only a core file with the highest index in a filename.
1774	Currently the system will create a new core file if there is a free
1775	index or if all slots are taken it will overwrite the oldest one.
1776
177720180630:
1778	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
1779	6.0.1.  Please see the 20141231 entry below for information about
1780	prerequisites and upgrading, if you are not already using clang 3.5.0
1781	or higher.
1782
178320180628:
1784	r335753 introduced a new quoting method. However, etc/devd/devmatch.conf
1785	needed to be changed to work with it. This change was made with r335763
1786	and requires a mergemaster / etcupdate / etc to update the installed
1787	file.
1788
178920180612:
1790	r334930 changed the interface between the NFS modules, so they all
1791	need to be rebuilt.  r335018 did a __FreeBSD_version bump for this.
1792
179320180530:
1794	As of r334391 lld is the default amd64 system linker; it is installed
1795	as /usr/bin/ld.  Kernel build workarounds (see 20180510 entry) are no
1796	longer necessary.
1797
179820180530:
1799	The kernel / userland interface for devinfo changed, so you'll
1800	need a new kernel and userland as a pair for it to work (rebuilding
1801	lib/libdevinfo is all that's required). devinfo and devmatch will
1802	not work, but everything else will when there's a mismatch.
1803
180420180523:
1805	The on-disk format for hwpmc callchain records has changed to include
1806	threadid corresponding to a given record. This changes the field offsets
1807	and thus requires that libpmcstat be rebuilt before using a kernel
1808	later than r334108.
1809
181020180517:
1811	The vxge(4) driver has been removed.  This driver was introduced into
1812	HEAD one week before the Exar left the Ethernet market and is not
1813	known to be used.  If you have device vxge in your kernel config file
1814	it must be removed.
1815
181620180510:
1817	The amd64 kernel now requires a ld that supports ifunc to produce a
1818	working kernel, either lld or a newer binutils. lld is built by default
1819	on amd64, and the 'buildkernel' target uses it automatically. However,
1820	it is not the default linker, so building the kernel the traditional
1821	way requires LD=ld.lld on the command line (or LD=/usr/local/bin/ld for
1822	binutils port/package). lld will soon be default, and this requirement
1823	will go away.
1824
1825	NOTE: As of r334391 lld is the default system linker on amd64, and no
1826	workaround is necessary.
1827
182820180508:
1829	The nxge(4) driver has been removed.  This driver was for PCI-X 10g
1830	cards made by s2io/Neterion.  The company was acquired by Exar and
1831	no longer sells or supports Ethernet products.  If you have device
1832	nxge in your kernel config file it must be removed.
1833
183420180504:
1835	The tz database (tzdb) has been updated to 2018e.  This version more
1836	correctly models time stamps in time zones with negative DST such as
1837	Europe/Dublin (from 1971 on), Europe/Prague (1946/7), and
1838	Africa/Windhoek (1994/2017).  This does not affect the UT offsets, only
1839	time zone abbreviations and the tm_isdst flag.
1840
184120180502:
1842	The ixgb(4) driver has been removed.  This driver was for an early and
1843	uncommon legacy PCI 10GbE for a single ASIC, Intel 82597EX. Intel
1844	quickly shifted to the long lived ixgbe family.  If you have device
1845	ixgb in your kernel config file it must be removed.
1846
184720180501:
1848	The lmc(4) driver has been removed.  This was a WAN interface
1849	card that was already reportedly rare in 2003, and had an ambiguous
1850	license.  If you have device lmc in your kernel config file it must
1851	be removed.
1852
185320180413:
1854	Support for Arcnet networks has been removed.  If you have device
1855	arcnet or device cm in your kernel config file they must be
1856	removed.
1857
185820180411:
1859	Support for FDDI networks has been removed.  If you have device
1860	fddi or device fpa in your kernel config file they must be
1861	removed.
1862
186320180406:
1864	In addition to supporting RFC 3164 formatted messages, the
1865	syslogd(8) service is now capable of parsing RFC 5424 formatted
1866	log messages. The main benefit of using RFC 5424 is that clients
1867	may now send log messages with timestamps containing year numbers,
1868	microseconds and time zone offsets.
1869
1870	Similarly, the syslog(3) C library function has been altered to
1871	send RFC 5424 formatted messages to the local system logging
1872	daemon. On systems using syslogd(8), this change should have no
1873	negative impact, as long as syslogd(8) and the C library are
1874	updated at the same time. On systems using a different system
1875	logging daemon, it may be necessary to make configuration
1876	adjustments, depending on the software used.
1877
1878	When using syslog-ng, add the 'syslog-protocol' flag to local
1879	input sources to enable parsing of RFC 5424 formatted messages:
1880
1881		source src {
1882			unix-dgram("/var/run/log" flags(syslog-protocol));
1883		}
1884
1885	When using rsyslog, disable the 'SysSock.UseSpecialParser' option
1886	of the 'imuxsock' module to let messages be processed by the
1887	regular RFC 3164/5424 parsing pipeline:
1888
1889		module(load="imuxsock" SysSock.UseSpecialParser="off")
1890
1891	Do note that these changes only affect communication between local
1892	applications and syslogd(8). The format that syslogd(8) uses to
1893	store messages on disk or forward messages to other systems
1894	remains unchanged. syslogd(8) still uses RFC 3164 for these
1895	purposes. Options to customize this behaviour will be added in the
1896	future. Utilities that process log files stored in /var/log are
1897	thus expected to continue to function as before.
1898
1899	__FreeBSD_version has been incremented to 1200061 to denote this
1900	change.
1901
190220180328:
1903	Support for token ring networks has been removed. If you
1904	have "device token" in your kernel config you should remove
1905	it. No device drivers supported token ring.
1906
190720180323:
1908	makefs was modified to be able to tag ISO9660 El Torito boot catalog
1909	entries as EFI instead of overloading the i386 tag as done previously.
1910	The amd64 mkisoimages.sh script used to build amd64 ISO images for
1911	release was updated to use this. This may mean that makefs must be
1912	updated before "make cdrom" can be run in the release directory. This
1913	should be as simple as:
1914
1915		$ cd $SRCDIR/usr.sbin/makefs
1916		$ make depend all install
1917
191820180212:
1919	FreeBSD boot loader enhanced with Lua scripting. It's purely opt-in for
1920	now by building WITH_LOADER_LUA and WITHOUT_FORTH in /etc/src.conf.
1921	Co-existence for the transition period will come shortly. Booting is a
1922	complex environment and test coverage for Lua-enabled loaders has been
1923	thin, so it would be prudent to assume it might not work and make
1924	provisions for backup boot methods.
1925
192620180211:
1927	devmatch functionality has been turned on in devd. It will automatically
1928	load drivers for unattached devices. This may cause unexpected drivers
1929	to be loaded. Please report any problems to current@ and
1930	imp@freebsd.org.
1931
193220180114:
1933	Clang, llvm, lld, lldb, compiler-rt and libc++ have been upgraded to
1934	6.0.0.  Please see the 20141231 entry below for information about
1935	prerequisites and upgrading, if you are not already using clang 3.5.0
1936	or higher.
1937
193820180110:
1939	LLVM's lld linker is now used as the FreeBSD/amd64 bootstrap linker.
1940	This means it is used to link the kernel and userland libraries and
1941	executables, but is not yet installed as /usr/bin/ld by default.
1942
1943	To revert to ld.bfd as the bootstrap linker, in /etc/src.conf set
1944	WITHOUT_LLD_BOOTSTRAP=yes
1945
194620180110:
1947	On i386, pmtimer has been removed. Its functionality has been folded
1948	into apm. It was a no-op on ACPI in current for a while now (but was
1949	still needed on i386 in FreeBSD 11 and earlier). Users may need to
1950	remove it from kernel config files.
1951
195220180104:
1953	The use of RSS hash from the network card aka flowid has been
1954	disabled by default for lagg(4) as it's currently incompatible with
1955	the lacp and loadbalance protocols.
1956
1957	This can be re-enabled by setting the following in loader.conf:
1958	net.link.lagg.default_use_flowid="1"
1959
196020180102:
1961	The SW_WATCHDOG option is no longer necessary to enable the
1962	hardclock-based software watchdog if no hardware watchdog is
1963	configured. As before, SW_WATCHDOG will cause the software
1964	watchdog to be enabled even if a hardware watchdog is configured.
1965
196620171215:
1967	r326887 fixes the issue described in the 20171214 UPDATING entry.
1968	r326888 flips the switch back to building GELI support always.
1969
197020171214:
1971	r362593 broke ZFS + GELI support for reasons unknown. However,
1972	it also broke ZFS support generally, so GELI has been turned off
1973	by default as the lesser evil in r326857. If you boot off ZFS and/or
1974	GELI, it might not be a good time to update.
1975
197620171125:
1977	PowerPC users must update loader(8) by rebuilding world before
1978	installing a new kernel, as the protocol connecting them has
1979	changed. Without the update, loader metadata will not be passed
1980	successfully to the kernel and users will have to enter their
1981	root partition at the kernel mountroot prompt to continue booting.
1982	Newer versions of loader can boot old kernels without issue.
1983
198420171110:
1985	The LOADER_FIREWIRE_SUPPORT build variable has been renamed to
1986	WITH/OUT_LOADER_FIREWIRE. LOADER_{NO_,}GELI_SUPPORT has been renamed
1987	to WITH/OUT_LOADER_GELI.
1988
198920171106:
1990	The naive and non-compliant support of posix_fallocate(2) in ZFS
1991	has been removed as of r325320.  The system call now returns EINVAL
1992	when used on a ZFS file.  Although the new behavior complies with the
1993	standard, some consumers are not prepared to cope with it.
1994	One known victim is lld prior to r325420.
1995
199620171102:
1997	Building in a FreeBSD src checkout will automatically create object
1998	directories now rather than store files in the current directory if
1999	'make obj' was not ran.  Calling 'make obj' is no longer necessary.
2000	This feature can be disabled by setting WITHOUT_AUTO_OBJ=yes in
2001	/etc/src-env.conf (not /etc/src.conf), or passing the option in the
2002	environment.
2003
200420171101:
2005	The default MAKEOBJDIR has changed from /usr/obj/<srcdir> for native
2006	builds, and /usr/obj/<arch>/<srcdir> for cross-builds, to a unified
2007	/usr/obj/<srcdir>/<arch>.  This behavior can be changed to the old
2008	format by setting WITHOUT_UNIFIED_OBJDIR=yes in /etc/src-env.conf,
2009	the environment, or with -DWITHOUT_UNIFIED_OBJDIR when building.
2010	The UNIFIED_OBJDIR option is a transitional feature that will be
2011	removed for 12.0 release; please migrate to the new format for any
2012	tools by looking up the OBJDIR used by 'make -V .OBJDIR' means rather
2013	than hardcoding paths.
2014
201520171028:
2016	The native-xtools target no longer installs the files by default to the
2017	OBJDIR.  Use the native-xtools-install target with a DESTDIR to install
2018	to ${DESTDIR}/${NXTP} where NXTP defaults to /nxb-bin.
2019
202020171021:
2021	As part of the boot loader infrastructure cleanup, LOADER_*_SUPPORT
2022	options are changing from controlling the build if defined / undefined
2023	to controlling the build with explicit 'yes' or 'no' values. They will
2024	shift to WITH/WITHOUT options to match other options in the system.
2025
202620171010:
2027	libstand has turned into a private library for sys/boot use only.
2028	It is no longer supported as a public interface outside of sys/boot.
2029
203020171005:
2031	The arm port has split armv6 into armv6 and armv7. armv7 is now
2032	a valid TARGET_ARCH/MACHINE_ARCH setting. If you have an armv7 system
2033	and are running a kernel from before r324363, you will need to add
2034	MACHINE_ARCH=armv7 to 'make buildworld' to do a native build.
2035
203620171003:
2037	When building multiple kernels using KERNCONF, non-existent KERNCONF
2038	files will produce an error and buildkernel will fail. Previously
2039	missing KERNCONF files silently failed giving no indication as to
2040	why, only to subsequently discover during installkernel that the
2041	desired kernel was never built in the first place.
2042
204320170912:
2044	The default serial number format for CTL LUNs has changed.  This will
2045	affect users who use /dev/diskid/* device nodes, or whose FibreChannel
2046	or iSCSI clients care about their LUNs' serial numbers.  Users who
2047	require serial number stability should hardcode serial numbers in
2048	/etc/ctl.conf .
2049
205020170912:
2051	For 32-bit arm compiled for hard-float support, soft-floating point
2052	binaries now always get their shared libraries from
2053	LD_SOFT_LIBRARY_PATH (in the past, this was only used if
2054	/usr/libsoft also existed). Only users with a hard-float ld.so, but
2055	soft-float everything else should be affected.
2056
205720170826:
2058	The geli password typed at boot is now hidden.  To restore the previous
2059	behavior, see geli(8) for configuration options.
2060
206120170825:
2062	Move PMTUD blackhole counters to TCPSTATS and remove them from bare
2063	sysctl values.  Minor nit, but requires a rebuild of both world/kernel
2064	to complete.
2065
206620170814:
2067	"make check" behavior (made in ^/head@r295380) has been changed to
2068	execute from a limited sandbox, as opposed to executing from
2069	${TESTSDIR}.
2070
2071	Behavioral changes:
2072	- The "beforecheck" and "aftercheck" targets are now specified.
2073	- ${CHECKDIR} (added in commit noted above) has been removed.
2074	- Legacy behavior can be enabled by setting
2075	  WITHOUT_MAKE_CHECK_USE_SANDBOX in src.conf(5) or the environment.
2076
2077	If the limited sandbox mode is enabled, "make check" will execute
2078	"make distribution", then install, execute the tests, and clean up the
2079	sandbox if successful.
2080
2081	The "make distribution" and "make install" targets are typically run as
2082	root to set appropriate permissions and ownership at installation time.
2083	The end-user should set "WITH_INSTALL_AS_USER" in src.conf(5) or the
2084	environment if executing "make check" with limited sandbox mode using
2085	an unprivileged user.
2086
208720170808:
2088	Since the switch to GPT disk labels, fsck for UFS/FFS has been
2089	unable to automatically find alternate superblocks. As of r322297,
2090	the information needed to find alternate superblocks has been
2091	moved to the end of the area reserved for the boot block.
2092	Filesystems created with a newfs of this vintage or later
2093	will create the recovery information. If you have a filesystem
2094	created prior to this change and wish to have a recovery block
2095	created for your filesystem, you can do so by running fsck in
2096	foreground mode (i.e., do not use the -p or -y options). As it
2097	starts, fsck will ask ``SAVE DATA TO FIND ALTERNATE SUPERBLOCKS''
2098	to which you should answer yes.
2099
210020170728:
2101	As of r321665, an NFSv4 server configuration that services
2102	Kerberos mounts or clients that do not support the uid/gid in
2103	owner/owner_group string capability, must explicitly enable
2104	the nfsuserd daemon by adding nfsuserd_enable="YES" to the
2105	machine's /etc/rc.conf file.
2106
210720170722:
2108	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 5.0.0.
2109	Please see the 20141231 entry below for information about prerequisites
2110	and upgrading, if you are not already using clang 3.5.0 or higher.
2111
211220170701:
2113	WITHOUT_RCMDS is now the default. Set WITH_RCMDS if you need the
2114	r-commands (rlogin, rsh, etc.) to be built with the base system.
2115
211620170625:
2117	The FreeBSD/powerpc platform now uses a 64-bit type for time_t.  This is
2118	a very major ABI incompatible change, so users of FreeBSD/powerpc must
2119	be careful when performing source upgrades.  It is best to run
2120	'make installworld' from an alternate root system, either a live
2121	CD/memory stick, or a temporary root partition.  Additionally, all ports
2122	must be recompiled.  powerpc64 is largely unaffected, except in the case
2123	of 32-bit compatibility.  All 32-bit binaries will be affected.
2124
212520170623:
2126	Forward compatibility for the "ino64" project have been committed. This
2127	will allow most new binaries to run on older kernels in a limited
2128	fashion.  This prevents many of the common foot-shooting actions in the
2129	upgrade as well as the limited ability to roll back the kernel across
2130	the ino64 upgrade. Complicated use cases may not work properly, though
2131	enough simpler ones work to allow recovery in most situations.
2132
213320170620:
2134	Switch back to the BSDL dtc (Device Tree Compiler). Set WITH_GPL_DTC
2135	if you require the GPL compiler.
2136
213720170619:
2138	Forward compatibility for the "ino64" project have been committed. This
2139	will allow most new binaries to run on older kernels in a limited
2140	fashion.  This prevents many of the common foot-shooting actions in the
2141	upgrade as well as the limited ability to roll back the kernel across
2142	the ino64 upgrade. Complicated use cases may not work properly, though
2143	enough simpler ones work to allow recovery in most situations.
2144
214520170618:
2146	The internal ABI used for communication between the NFS kernel modules
2147	was changed by r320085, so __FreeBSD_version was bumped to
2148	ensure all the NFS related modules are updated together.
2149
215020170617:
2151	The ABI of struct event was changed by extending the data
2152	member to 64bit and adding ext fields.  For upgrade, same
2153	precautions as for the entry 20170523 "ino64" must be
2154	followed.
2155
215620170531:
2157	The GNU roff toolchain has been removed from base. To render manpages
2158	which are not supported by mandoc(1), man(1) can fallback on GNU roff
2159	from ports (and recommends to install it).
2160	To render roff(7) documents, consider using GNU roff from ports or the
2161	heirloom doctools roff toolchain from ports via pkg install groff or
2162	via pkg install heirloom-doctools.
2163
216420170524:
2165	The ath(4) and ath_hal(4) modules now build piecemeal to allow for
2166	smaller runtime footprint builds.  This is useful for embedded systems
2167	which only require one chipset support.
2168
2169	If you load it as a module, make sure this is in /boot/loader.conf:
2170
2171	if_ath_load="YES"
2172
2173	This will load the HAL, all chip/RF backends and if_ath_pci.
2174	If you have if_ath_pci in /boot/loader.conf, ensure it is after
2175	if_ath or it will not load any HAL chipset support.
2176
2177	If you want to selectively load things (eg on cheaper ARM/MIPS
2178	platforms where RAM is at a premium) you should:
2179
2180	* load ath_hal
2181	* load the chip modules in question
2182	* load ath_rate, ath_dfs
2183	* load ath_main
2184	* load if_ath_pci and/or if_ath_ahb depending upon your particular
2185	  bus bind type - this is where probe/attach is done.
2186
2187	For further comments/feedback, poke adrian@ .
2188
218920170523:
2190	The "ino64" 64-bit inode project has been committed, which extends
2191	a number of types to 64 bits.  Upgrading in place requires care and
2192	adherence to the documented upgrade procedure.
2193
2194	If using a custom kernel configuration ensure that the
2195	COMPAT_FREEBSD11 option is included (as during the upgrade the
2196	system will be running the ino64 kernel with the existing world).
2197
2198	For the safest in-place upgrade begin by removing previous build
2199	artifacts via "rm -rf /usr/obj/*".  Then, carefully follow the full
2200	procedure documented below under the heading "To rebuild everything and
2201	install it on the current system."  Specifically, a reboot is required
2202	after installing the new kernel before installing world. While an
2203	installworld normally works by accident from multiuser after rebooting
2204	the proper kernel, there are many cases where this will fail across this
2205	upgrade and installworld from single user is required.
2206
220720170424:
2208	The NATM framework including the en(4), fatm(4), hatm(4), and
2209	patm(4) devices has been removed.  Consumers should plan a
2210	migration before the end-of-life date for FreeBSD 11.
2211
221220170420:
2213	GNU diff has been replaced by a BSD licensed diff. Some features of GNU
2214	diff has not been implemented, if those are needed a newer version of
2215	GNU diff is available via the diffutils package under the gdiff name.
2216
221720170413:
2218	As of r316810 for ipfilter, keep frags is no longer assumed when
2219	keep state is specified in a rule. r316810 aligns ipfilter with
2220	documentation in man pages separating keep frags from keep state.
2221	This allows keep state to be specified without forcing keep frags
2222	and allows keep frags to be specified independently of keep state.
2223	To maintain previous behaviour, also specify keep frags with
2224	keep state (as documented in ipf.conf.5).
2225
222620170407:
2227	arm64 builds now use the base system LLD 4.0.0 linker by default,
2228	instead of requiring that the aarch64-binutils port or package be
2229	installed. To continue using aarch64-binutils, set
2230	CROSS_BINUTILS_PREFIX=/usr/local/aarch64-freebsd/bin .
2231
223220170405:
2233	The UDP optimization in entry 20160818 that added the sysctl
2234	net.inet.udp.require_l2_bcast has been reverted.  L2 broadcast
2235	packets will no longer be treated as L3 broadcast packets.
2236
223720170331:
2238	Binds and sends to the loopback addresses, IPv6 and IPv4, will now
2239	use any explicitly assigned loopback address available in the jail
2240	instead of using the first assigned address of the jail.
2241
224220170329:
2243	The ctl.ko module no longer implements the iSCSI target frontend:
2244	cfiscsi.ko does instead.
2245
2246	If building cfiscsi.ko as a kernel module, the module can be loaded
2247	via one of the following methods:
2248	- `cfiscsi_load="YES"` in loader.conf(5).
2249	- Add `cfiscsi` to `$kld_list` in rc.conf(5).
2250	- ctladm(8)/ctld(8), when compiled with iSCSI support
2251	  (`WITH_ISCSI=yes` in src.conf(5))
2252
2253	Please see cfiscsi(4) for more details.
2254
225520170316:
2256	The mmcsd.ko module now additionally depends on geom_flashmap.ko.
2257	Also, mmc.ko and mmcsd.ko need to be a matching pair built from the
2258	same source (previously, the dependency of mmcsd.ko on mmc.ko was
2259	missing, but mmcsd.ko now will refuse to load if it is incompatible
2260	with mmc.ko).
2261
226220170315:
2263	The syntax of ipfw(8) named states was changed to avoid ambiguity.
2264	If you have used named states in the firewall rules, you need to modify
2265	them after installworld and before rebooting. Now named states must
2266	be prefixed with colon.
2267
226820170311:
2269	The old drm (sys/dev/drm/) drivers for i915 and radeon have been
2270	removed as the userland we provide cannot use them. The KMS version
2271	(sys/dev/drm2) supports the same hardware.
2272
227320170302:
2274	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 4.0.0.
2275	Please see the 20141231 entry below for information about prerequisites
2276	and upgrading, if you are not already using clang 3.5.0 or higher.
2277
227820170221:
2279	The code that provides support for ZFS .zfs/ directory functionality
2280	has been reimplemented.  It's not possible now to create a snapshot
2281	by mkdir under .zfs/snapshot/.  That should be the only user visible
2282	change.
2283
228420170216:
2285	EISA bus support has been removed. The WITH_EISA option is no longer
2286	valid.
2287
228820170215:
2289	MCA bus support has been removed.
2290
229120170127:
2292	The WITH_LLD_AS_LD / WITHOUT_LLD_AS_LD build knobs have been renamed
2293	WITH_LLD_IS_LD / WITHOUT_LLD_IS_LD, for consistency with CLANG_IS_CC.
2294
229520170112:
2296	The EM_MULTIQUEUE kernel configuration option is deprecated now that
2297	the em(4) driver conforms to iflib specifications.
2298
229920170109:
2300	The igb(4), em(4) and lem(4) ethernet drivers are now implemented via
2301	IFLIB.  If you have a custom kernel configuration that excludes em(4)
2302	but you use igb(4), you need to re-add em(4) to your custom
2303	configuration.
2304
230520161217:
2306	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.1.
2307	Please see the 20141231 entry below for information about prerequisites
2308	and upgrading, if you are not already using clang 3.5.0 or higher.
2309
231020161124:
2311	Clang, llvm, lldb, compiler-rt and libc++ have been upgraded to 3.9.0.
2312	Please see the 20141231 entry below for information about prerequisites
2313	and upgrading, if you are not already using clang 3.5.0 or higher.
2314
231520161119:
2316	The layout of the pmap structure has changed for powerpc to put the pmap
2317	statistics at the front for all CPU variations.  libkvm(3) and all tools
2318	that link against it need to be recompiled.
2319
232020161030:
2321	isl(4) and cyapa(4) drivers now require a new driver,
2322	chromebook_platform(4), to work properly on Chromebook-class hardware.
2323	On other types of hardware the drivers may need to be configured using
2324	device hints.  Please see the corresponding manual pages for details.
2325
232620161017:
2327	The urtwn(4) driver was merged into rtwn(4) and now consists of
2328	rtwn(4) main module + rtwn_usb(4) and rtwn_pci(4) bus-specific
2329	parts.
2330	Also, firmware for RTL8188CE was renamed due to possible name
2331	conflict (rtwnrtl8192cU(B) -> rtwnrtl8192cE(B))
2332
233320161015:
2334	GNU rcs has been removed from base.  It is available as packages:
2335	- rcs: Latest GPLv3 GNU rcs version.
2336	- rcs57: Copy of the latest version of GNU rcs (GPLv2) before it was
2337	removed from base.
2338
233920161008:
2340	Use of the cc_cdg, cc_chd, cc_hd, or cc_vegas congestion control
2341	modules now requires that the kernel configuration contain the
2342	TCP_HHOOK option. (This option is included in the GENERIC kernel.)
2343
234420161003:
2345	The WITHOUT_ELFCOPY_AS_OBJCOPY src.conf(5) knob has been retired.
2346	ELF Tool Chain's elfcopy is always installed as /usr/bin/objcopy.
2347
234820160924:
2349	Relocatable object files with the extension of .So have been renamed
2350	to use an extension of .pico instead.  The purpose of this change is
2351	to avoid a name clash with shared libraries on case-insensitive file
2352	systems.  On those file systems, foo.So is the same file as foo.so.
2353
235420160918:
2355	GNU rcs has been turned off by default.  It can (temporarily) be built
2356	again by adding WITH_RCS knob in src.conf.
2357	Otherwise, GNU rcs is available from packages:
2358	- rcs: Latest GPLv3 GNU rcs version.
2359	- rcs57: Copy of the latest version of GNU rcs (GPLv2) from base.
2360
236120160918:
2362	The backup_uses_rcs functionality has been removed from rc.subr.
2363
236420160908:
2365	The queue(3) debugging macro, QUEUE_MACRO_DEBUG, has been split into
2366	two separate components, QUEUE_MACRO_DEBUG_TRACE and
2367	QUEUE_MACRO_DEBUG_TRASH.  Define both for the original
2368	QUEUE_MACRO_DEBUG behavior.
2369
237020160824:
2371	r304787 changed some ioctl interfaces between the iSCSI userspace
2372	programs and the kernel.  ctladm, ctld, iscsictl, and iscsid must be
2373	rebuilt to work with new kernels.  __FreeBSD_version has been bumped
2374	to 1200005.
2375
237620160818:
2377	The UDP receive code has been updated to only treat incoming UDP
2378	packets that were addressed to an L2 broadcast address as L3
2379	broadcast packets.  It is not expected that this will affect any
2380	standards-conforming UDP application.  The new behaviour can be
2381	disabled by setting the sysctl net.inet.udp.require_l2_bcast to
2382	0.
2383
238420160818:
2385	Remove the openbsd_poll system call.
2386	__FreeBSD_version has been bumped because of this.
2387
238820160708:
2389	The stable/11 branch has been created from head@r302406.
2390
2391After branch N is created, entries older than the N-2 branch point are removed
2392from this file. After stable/14 is branched and current becomes FreeBSD 15,
2393entries older than stable/12 branch point will be removed from current's
2394UPDATING file.
2395
2396COMMON ITEMS:
2397
2398	General Notes
2399	-------------
2400	Sometimes, obscure build problems are the result of environment
2401	poisoning.  This can happen because the make utility reads its
2402	environment when searching for values for global variables.  To run
2403	your build attempts in an "environmental clean room", prefix all make
2404	commands with 'env -i '.  See the env(1) manual page for more details.
2405	Occasionally a build failure will occur with "make -j" due to a race
2406	condition.  If this happens try building again without -j, and please
2407	report a bug if it happens consistently.
2408
2409	When upgrading from one major version to another it is generally best to
2410	upgrade to the latest code in the currently installed branch first, then
2411	do an upgrade to the new branch. This is the best-tested upgrade path,
2412	and has the highest probability of being successful.  Please try this
2413	approach if you encounter problems with a major version upgrade.  Since
2414	the stable 4.x branch point, one has generally been able to upgrade from
2415	anywhere in the most recent stable branch to head / current (or even the
2416	last couple of stable branches). See the top of this file when there's
2417	an exception.
2418
2419	The update process will emit an error on an attempt to perform a build
2420	or install from a FreeBSD version below the earliest supported version.
2421	When updating from an older version the update should be performed one
2422	major release at a time, including running `make delete-old` at each
2423	step.
2424
2425	When upgrading a live system, having a root shell around before
2426	installing anything can help undo problems. Not having a root shell
2427	around can lead to problems if pam has changed too much from your
2428	starting point to allow continued authentication after the upgrade.
2429
2430	This file should be read as a log of events. When a later event changes
2431	information of a prior event, the prior event should not be deleted.
2432	Instead, a pointer to the entry with the new information should be
2433	placed in the old entry. Readers of this file should also sanity check
2434	older entries before relying on them blindly. Authors of new entries
2435	should write them with this in mind.
2436
2437	ZFS notes
2438	---------
2439	When upgrading the boot ZFS pool to a new version (via zpool upgrade),
2440	always follow these three steps:
2441
2442	1) recompile and reinstall the ZFS boot loader and boot block
2443	(this is part of "make buildworld" and "make installworld")
2444
2445	2) update the ZFS boot block on your boot drive (only required when
2446	doing a zpool upgrade):
2447
2448	When booting on x86 via BIOS, use the following to update the ZFS boot
2449	block on the freebsd-boot partition of a GPT partitioned drive ada0:
2450		gpart bootcode -p /boot/gptzfsboot -i $N ada0
2451	The value $N will typically be 1.  For EFI booting, see EFI notes.
2452
2453	3) zpool upgrade the root pool. New bootblocks will work with old
2454	pools, but not vice versa, so they need to be updated before any
2455	zpool upgrade.
2456
2457	Non-boot pools do not need these updates.
2458
2459	EFI notes
2460	---------
2461
2462	There are two locations the boot loader can be installed into. The
2463	current location (and the default) is \efi\freebsd\loader.efi and using
2464	efibootmgr(8) to configure it. The old location, that must be used on
2465	deficient systems that don't honor efibootmgr(8) protocols, is the
2466	fallback location of \EFI\BOOT\BOOTxxx.EFI. Generally, you will copy
2467	/boot/loader.efi to this location, but on systems installed a long time
2468	ago the ESP may be too small and /boot/boot1.efi may be needed unless
2469	the ESP has been expanded in the meantime.
2470
2471	Recent systems will have the ESP mounted on /boot/efi, but older ones
2472	may not have it mounted at all, or mounted in a different
2473	location. Older arm SD images with MBR used /boot/msdos as the
2474	mountpoint. The ESP is a MSDOS filesystem.
2475
2476	The EFI boot loader rarely needs to be updated. For ZFS booting,
2477	however, you must update loader.efi before you do 'zpool upgrade' the
2478	root zpool, otherwise the old loader.efi may reject the upgraded zpool
2479	since it does not automatically understand some new features.
2480
2481	See loader.efi(8) and uefi(8) for more details.
2482
2483	To build a kernel
2484	-----------------
2485	If you are updating from a prior version of FreeBSD (even one just
2486	a few days old), you should follow this procedure.  It is the most
2487	failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
2488
2489	make kernel-toolchain
2490	make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
2491	make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
2492
2493	If you are running kernel modules from ports, see FOOTNOTE [1].
2494
2495	To test a kernel once
2496	---------------------
2497	If you just want to boot a kernel once (because you are not sure
2498	if it works, or if you want to boot a known bad kernel to provide
2499	debugging information) run
2500	make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
2501	nextboot -k testkernel
2502
2503	To rebuild everything and install it on the current system.
2504	-----------------------------------------------------------
2505	# Note: sometimes if you are running current you gotta do more than
2506	# is listed here if you are upgrading from a really old current.
2507
2508	<make sure you have good level 0 dumps>		[2]
2509	make buildworld
2510	<make sure any needed PORTS_MODULES are set>	[1]
2511	make buildkernel KERNCONF=YOUR_KERNEL_HERE
2512	make installkernel KERNCONF=YOUR_KERNEL_HERE
2513	<reboot in single user>				[3]
2514	etcupdate -p					[5]
2515	make installworld
2516	etcupdate -B					[4]
2517	make delete-old					[6]
2518	<reboot>
2519
2520	To cross-install current onto a separate partition
2521	--------------------------------------------------
2522	# In this approach we use a separate partition to hold
2523	# current's root, 'usr', and 'var' directories.   A partition
2524	# holding "/", "/usr" and "/var" should be about 2GB in
2525	# size.
2526
2527	<make sure you have good level 0 dumps>
2528	<boot into -stable>
2529	make buildworld
2530	make buildkernel KERNCONF=YOUR_KERNEL_HERE	[1]
2531	<maybe newfs current's root partition>
2532	<mount current's root partition on directory ${CURRENT_ROOT}>
2533	make installworld DESTDIR=${CURRENT_ROOT} -DDB_FROM_SRC
2534	make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
2535	make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
2536	cp /etc/fstab ${CURRENT_ROOT}/etc/fstab 		   # if newfs'd
2537	<edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
2538	<reboot into current>
2539	<do a "native" rebuild/install as described in the previous section>
2540	<maybe install compatibility libraries from ports/misc/compat*>
2541	<reboot>
2542
2543
2544	To upgrade in-place from stable to current
2545	----------------------------------------------
2546	<make sure you have good level 0 dumps>		[2]
2547	make buildworld					[9]
2548	<make sure any needed PORTS_MODULES are set>	[1]
2549	make buildkernel KERNCONF=YOUR_KERNEL_HERE	[8]
2550	make installkernel KERNCONF=YOUR_KERNEL_HERE
2551	<reboot in single user>				[3]
2552	etcupdate -p					[5]
2553	make installworld
2554	etcupdate -B					[4]
2555	make delete-old					[6]
2556	<reboot>
2557
2558	Make sure that you've read the UPDATING file to understand the
2559	tweaks to various things you need.  At this point in the life
2560	cycle of current, things change often and you are on your own
2561	to cope.  The defaults can also change, so please read ALL of
2562	the UPDATING entries.
2563
2564	Also, if you are tracking -current, you must be subscribed to
2565	freebsd-current@freebsd.org.  Make sure that before you update
2566	your sources that you have read and understood all the recent
2567	messages there.  If in doubt, please track -stable which has
2568	much fewer pitfalls.
2569
2570FOOTNOTES:
2571
2572	[1] If you have third party modules, such as drm-kmod or vmware, you
2573	should disable them at this point so they don't crash your system on
2574	reboot. Alternatively, you should rebuild all the modules you have in
2575	your system and install them as well.  If you are running -current, you
2576	should seriously consider placing all sources to all the modules for
2577	your system (or symlinks to them) in /usr/local/sys/modules so this
2578	happens automatically. If all your modules come from ports, then adding
2579	the port origin directories to PORTS_MODULES instead is also automatic
2580	and effective, eg:
2581	     PORTS_MODULES+=graphics/drm-kmod graphics/nvidia-drm-kmod
2582
2583	[2] To make complete dumps on zfs(4), use bectl(8), which
2584	creates bootable snapshots of configurable depth that are
2585	selectable via the bootloader. For ufs(4), use dump(8) and
2586	restore(8).
2587
2588	[3] From the bootblocks, boot -s, and then do
2589		fsck -p
2590		mount -u /
2591		mount -a
2592		sh /etc/rc.d/zfs start	# mount zfs filesystem, if needed
2593		cd src			# full path to source
2594		adjkerntz -i		# if CMOS is wall time
2595	Also, when doing a major release upgrade, it is required that you boot
2596	into single user mode to do the installworld.
2597
2598	[4] Note: This step is non-optional.  Failure to do this step
2599	can result in a significant reduction in the functionality of the
2600	system.  Attempting to do it by hand is not recommended and those
2601	that pursue this avenue should read this file carefully, as well
2602	as the archives of freebsd-current and freebsd-hackers mailing lists
2603	for potential gotchas.  See etcupdate(8) for more information.
2604
2605	[5] Usually this step is a no-op.  However, from time to time
2606	you may need to do this if you get unknown user in the following
2607	step.
2608
2609	[6] This only deletes old files and directories. Old libraries
2610	can be deleted by "make delete-old-libs", but you have to make
2611	sure that no program is using those libraries anymore.
2612
2613	[8] The new kernel must be able to run existing binaries used by an
2614	installworld.  When upgrading across major versions, the new kernel's
2615	configuration must include the correct COMPAT_FREEBSD<n> option for
2616	existing binaries (e.g. COMPAT_FREEBSD11 to run 11.x binaries).  Failure
2617	to do so may leave you with a system that is hard to boot to recover. A
2618	GENERIC kernel will include suitable compatibility options to run
2619	binaries from older branches.  Note that the ability to run binaries
2620	from unsupported branches is not guaranteed.
2621
2622	Make sure that you merge any new devices from GENERIC since the
2623	last time you updated your kernel config file. Options also
2624	change over time, so you may need to adjust your custom kernels
2625	for these as well.
2626
2627	[9] If CPUTYPE is defined in your /etc/make.conf, make sure to use the
2628	"?=" instead of the "=" assignment operator, so that buildworld can
2629	override the CPUTYPE if it needs to.
2630
2631	MAKEOBJDIRPREFIX must be defined in an environment variable, and
2632	not on the command line, or in /etc/make.conf.  buildworld will
2633	warn if it is improperly defined.
2634FORMAT:
2635
2636This file contains a list, in reverse chronological order, of major
2637breakages in tracking -current.  It is not guaranteed to be a complete
2638list of such breakages, and only contains entries since September 23, 2011.
2639If you need to see UPDATING entries from before that date, you will need
2640to fetch an UPDATING file from an older FreeBSD release.
2641
2642Copyright information:
2643
2644Copyright 1998-2009 M. Warner Losh <imp@FreeBSD.org>
2645
2646Redistribution, publication, translation and use, with or without
2647modification, in full or in part, in any form or format of this
2648document are permitted without further permission from the author.
2649
2650THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
2651IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
2652WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
2653DISCLAIMED.  IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
2654INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
2655(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
2656SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
2657HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
2658STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
2659IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
2660POSSIBILITY OF SUCH DAMAGE.
2661
2662Contact Warner Losh if you have any questions about your use of
2663this document.
2664