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Document r327871, cpucontrol(8) CPU feature re-evaluation ('-e').
[FreeBSD/FreeBSD.git] / release / doc / en_US.ISO8859-1 / relnotes / article.xml
1 <?xml version="1.0" encoding="iso-8859-1"?>
2 <!DOCTYPE article PUBLIC "-//FreeBSD//DTD DocBook XML V5.0-Based Extension//EN"
3         "../../../share/xml/freebsd50.dtd" [
4 <!ENTITY % release PUBLIC "-//FreeBSD//ENTITIES Release Specification//EN" "release.ent">
5  %release;
6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
7  %sponsor;
8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
9  %vendor;
10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
12 ]>
13 <article xmlns="http://docbook.org/ns/docbook"
14   xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
15
16   <info>
17     <title>&os; &release.current; Release Notes</title>
18
19     <author>
20       <orgname>The &os; Project</orgname>
21     </author>
22
23     <pubdate>$FreeBSD$</pubdate>
24
25     <!-- Last rev: 288943 -->
26
27     <copyright>
28       <year>2017</year>
29       <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
30         Project</holder>
31     </copyright>
32
33     <legalnotice xml:id="trademarks" role="trademarks">
34       &tm-attrib.freebsd;
35       &tm-attrib.ibm;
36       &tm-attrib.ieee;
37       &tm-attrib.intel;
38       &tm-attrib.sparc;
39       &tm-attrib.general;
40     </legalnotice>
41
42     <abstract>
43       <para>The release notes for &os; &release.current; contain
44         a summary of the changes made to the &os; base system on the
45         &release.branch; development line.  This document lists
46         applicable security advisories that were issued since the last
47         release, as well as significant changes to the &os; kernel and
48         userland.  Some brief remarks on upgrading are also
49         presented.</para>
50     </abstract>
51   </info>
52
53   <sect1 xml:id="intro">
54     <title>Introduction</title>
55
56     <para>This document contains the release notes for &os;
57       &release.current;.  It describes recently added, changed, or
58       deleted features of &os;.  It also provides some notes on
59       upgrading from previous versions of &os;.</para>
60
61     <para releasetype="current">The &release.type; distribution to
62       which these release notes apply represents the latest point
63       along the &release.branch; development branch since
64       &release.branch; was created.  Information regarding pre-built,
65       binary &release.type; distributions along this branch can be
66       found at <uri
67         xlink:href="&release.url;">&release.url;</uri>.</para>
68
69     <para releasetype="snapshot">The &release.type; distribution to
70       which these release notes apply represents a point along the
71       &release.branch; development branch between &release.prev; and
72       the future &release.next;.  Information regarding pre-built,
73       binary &release.type; distributions along this branch can be
74       found at <uri
75         xlink:href="&release.url;">&release.url;</uri>.</para>
76
77     <para releasetype="release">This distribution of &os;
78       &release.current; is a &release.type; distribution.  It can be
79       found at <uri xlink:href="&release.url;">&release.url;</uri> or
80       any of its mirrors.  More information on obtaining this (or
81       other) &release.type; distributions of &os; can be found in the
82       <link
83         xlink:href="&url.books.handbook;/mirrors.html"><quote>Obtaining
84           &os;</quote> appendix</link> to the <link
85         xlink:href="&url.books.handbook;/">&os;
86         Handbook</link>.</para>
87
88     <para>All users are encouraged to consult the release errata
89       before installing &os;.  The errata document is updated with
90       <quote>late-breaking</quote> information discovered late in the
91       release cycle or after the release.  Typically, it contains
92       information on known bugs, security advisories, and corrections
93       to documentation.  An up-to-date copy of the errata for &os;
94       &release.current; can be found on the &os; Web site.</para>
95
96     <para>This document describes the most user-visible new or changed
97       features in &os; since &release.prev;.  In general, changes
98       described here are unique to the &release.branch; branch unless
99       specifically marked as &merged; features.</para>
100
101     <para>Typical release note items document recent security
102       advisories issued after &release.prev;, new drivers or hardware
103       support, new commands or options, major bug fixes, or
104       contributed software upgrades.  They may also list changes to
105       major ports/packages or release engineering practices.  Clearly
106       the release notes cannot list every single change made to &os;
107       between releases; this document focuses primarily on security
108       advisories, user-visible changes, and major architectural
109       improvements.</para>
110   </sect1>
111
112   <sect1 xml:id="upgrade">
113     <title>Upgrading from Previous Releases of &os;</title>
114
115     <para arch="amd64,i386">Binary upgrades between RELEASE versions
116       (and snapshots of the various security branches) are supported
117       using the &man.freebsd-update.8; utility.  The binary upgrade
118       procedure will update unmodified userland utilities, as well as
119       unmodified GENERIC kernels distributed as a part of an official
120       &os; release.  The &man.freebsd-update.8; utility requires that
121       the host being upgraded have Internet connectivity.</para>
122
123     <para>Source-based upgrades (those based on recompiling the &os;
124       base system from source code) from previous versions are
125       supported, according to the instructions in
126       <filename>/usr/src/UPDATING</filename>.</para>
127
128     <important>
129       <para>Upgrading &os; should only be attempted after backing up
130         <emphasis>all</emphasis> data and configuration files.</para>
131     </important>
132   </sect1>
133
134   <sect1 xml:id="security-errata">
135     <title>Security and Errata</title>
136
137     <para>This section lists the various Security Advisories and
138       Errata Notices since &release.prev;.</para>
139
140     <sect2 xml:id="security">
141       <title>Security Advisories</title>
142
143       &security;
144     </sect2>
145
146     <sect2 xml:id="errata">
147       <title>Errata Notices</title>
148
149       &errata;
150     </sect2>
151   </sect1>
152
153   <sect1 xml:id="userland">
154     <title>Userland</title>
155
156     <para>This section covers changes and additions to userland
157       applications, contributed software, and system utilities.</para>
158
159     <sect2 xml:id="userland-config">
160       <title>Userland Configuration Changes</title>
161
162       <para>&nbsp;</para>
163     </sect2>
164
165     <sect2 xml:id="userland-programs">
166       <title>Userland Application Changes</title>
167
168       <para revision="321092">The &man.ln.1; utility has been updated
169         to correct the behavior of the <literal>-F</literal> flag by
170         unlinking an existing directory before creating a symbolic
171         link.</para>
172
173       <para revision="321241">The &man.crontab.1; utility has been
174         updated to include a new flag, <literal>-f</literal>, which
175         forces &man.crontab.5; removal when <literal>-r</literal> is
176         used non-interactively.</para>
177
178       <para revision="321262">The &man.newsyslog.8; utility has been
179         updated to support <acronym>RFC</acronym>5424-compliant
180         messages when rotating system logs.</para>
181
182       <para revision="321287" contrib="sponsor" sponsor="&gandi;">The
183         &man.sesutil.8; utility has been updated to include
184         &man.libxo.3; support in output.</para>
185
186       <para revision="321927">The &man.diskinfo.8; utility has been
187         updated to include two new flags, <literal>-s</literal> which
188         displays the disk identity (usually the serial number), and
189         <literal>-p</literal> which displays the physical path to the
190         disk in a storage controller.  The <literal>-s</literal> and
191         <literal>-p</literal> flags are mutually exclusive, and cannot
192         be used with any other flags.</para>
193
194       <para revision="321929">The &man.diskinfo.8; utility has also
195         been updated to include device model when the
196         <literal>-s</literal> flag is used.</para>
197
198       <para revision="322919">The &man.pw.8; utility has been updated
199         to properly handle empty secondary group lists as an argument
200         to the <literal>-G</literal> flag when using the
201         <literal>usermod</literal> subcommand.</para>
202
203       <para revision="324270">The &man.ps.1; utility has been updated
204         to reflect realtime and idle priorities in state flags.</para>
205
206       <para revision="324271">The &man.ps.1; utility has been updated
207         to display if a process is running with &man.capsicum.4;
208         capability mode, indicated by <literal>C</literal>.</para>
209
210       <para revision="324380">The &man.cpucontrol.8; utility has been
211         updated to include a new flag, <literal>-n</literal>, that
212         disables the default microcode update search path when
213         used.</para>
214
215       <para revision="325003" contrib="sponsor"
216         sponsor="&spectralogic;">The &man.diskinfo.8; utility has been
217         updated to display disk rotation rate and if
218         <acronym>TRIM</acronym>/<acronym>UNMAP</acronym> is supported
219         by the disk.</para>
220
221       <para revision="326848">The &man.pw.8; utility has been updated
222         to correct handling of account expiration periods.</para>
223
224       <para revision="327871">The &man.cpucontrol.8; utility has been
225         updated to include a new flag, <literal>-e</literal>, which is
226         used to re-evaluate reported <acronym>CPU</acronym> features
227         after applying firmware updates.</para>
228
229       <note>
230         <para>The &man.cpucontrol.8; <literal>-e</literal> flag should
231           only be used after microcode update have been applied to all
232           <acronym>CPU</acronym>s in the system, otherwise system
233           instability may be experienced if processor features are not
234           identical across the system.</para>
235       </note>
236
237       <para revision="328140">The &man.df.1; utility has been updated
238         to include the <literal>--si</literal> long option, which is
239         an alias to <literal>-H</literal>.</para>
240
241       <para revision="330694" contrib="sponsor"
242         sponsor="&dellemc;">The &man.pw.8; utility has been updated to
243         allow the <literal>@</literal> and <literal>!</literal>
244         characters in the <acronym>GECOS</acronym> field.</para>
245
246       <para revision="331471">The &man.ps.1; utility has been updated
247         to include a <literal>jail</literal>, which when used will
248         list the name of a &man.jail.8; instead of the numeric
249         ID.</para>
250
251       <para revision="331586" contrib="sponsor"
252         sponsor="&mellanox;">The &man.mlx5tool.8; utility has been
253         added, which is used to manage Connect-X&nbsp;4 and
254         Connect-X&nbsp;5 devices supported by &man.mlx5io.4;.</para>
255
256       <para revision="332126" contrib="sponsor"
257         sponsor="&netflix;">The &man.efibootmgr.8; utility has been
258         added, which is used to manipulate the <acronym>EFI</acronym>
259         boot manager.</para>
260     </sect2>
261
262     <sect2 xml:id="userland-contrib">
263       <title>Contributed Software</title>
264
265       <para revision="321303">The &man.libarchive.3; library has been
266         updated to version 3.3.2.</para>
267
268       <para revision="322172">The &man.libxo.3; library has been
269         updated to version 0.8.4.</para>
270
271       <para revision="322442"><application>Subversion</application>
272         has been updated to version 1.9.7.</para>
273
274       <para revision="328874">The &man.file.1; utility has been
275         updated to version 5.32.</para>
276
277       <para revision="323136"><application>OpenSSH</application> has
278         been updated to version 7.5p1.</para>
279
280       <para revision="324581">The &man.mandoc.1; utility has been
281         updated to version 1.14.3.</para>
282
283       <para revision="327234">The &man.tcpdump.1; utility has been
284         updated to version 4.9.2.</para>
285
286       <para revision="330106">The <acronym>NTP</acronym> utilities
287         have been updated to version 4.2.8p11.</para>
288
289       <para revision="330570">The &man.less.1; utility has been
290         updated to upstream version v530.</para>
291
292       <para revision="331246">The <application>bmake</application>
293         utility has been updated to upstream version 20180222.</para>
294
295       <para revision="331638"><application>OpenSSL</application> has
296         been updated to version 1.0.2o.</para>
297
298       <para revision="331662">Timezone data files have been updated to
299         version 2018d.</para>
300
301       <para revision="331838">The <application>clang</application>,
302         <application>llvm</application>,
303         <application>lld</application>,
304         <application>lldb</application>, and
305         <application>complier-rt</application> utilities as well as
306         <literal>libc++</literal> have been updated to upstream
307         version 6.0.0.</para>
308     </sect2>
309
310     <sect2 xml:id="userland-installer">
311       <title>Installation and Configuration Tools</title>
312
313       <para revision="322254" contrib="sponsor" sponsor="&ff;"
314         arch="&arch.arm64;">The &man.bsdinstall.8; installer has been
315         updated to default to <acronym>UEFI</acronym>-only
316         boot.</para>
317     </sect2>
318
319     <sect2 xml:id="userland-rc">
320       <title><filename class="directory">/etc/rc.d</filename>
321         Scripts</title>
322
323       <para>&nbsp;</para>
324     </sect2>
325
326     <sect2 xml:id="userland-periodic">
327       <title><filename class="directory">/etc/periodic</filename>
328         Scripts</title>
329
330       <para>&nbsp;</para>
331     </sect2>
332
333     <sect2 xml:id="userland-libraries">
334       <title>Runtime Libraries and API</title>
335
336       <para>&nbsp;</para>
337     </sect2>
338
339     <sect2 xml:id="userland-abi">
340       <title>ABI Compatibility</title>
341
342       <para>&nbsp;</para>
343     </sect2>
344
345     <sect2 xml:id="userland-debug">
346       <title>Userland Debugging</title>
347
348       <para>&nbsp;</para>
349     </sect2>
350   </sect1>
351
352   <sect1 xml:id="kernel">
353     <title>Kernel</title>
354
355     <para>This section covers changes to kernel configurations, system
356       tuning, and system control parameters that are not otherwise
357       categorized.</para>
358
359     <sect2 xml:id="kernel-general">
360       <title>General Kernel Changes</title>
361
362       <para>&nbsp;</para>
363     </sect2>
364
365     <sect2 xml:id="kernel-bugfix">
366       <title>Kernel Bug Fixes</title>
367
368       <para>&nbsp;</para>
369     </sect2>
370
371     <sect2 xml:id="kernel-config">
372       <title>Kernel Configuration</title>
373
374       <para>&nbsp;</para>
375     </sect2>
376
377     <sect2 xml:id="kernel-modules">
378       <title>Kernel Modules</title>
379
380       <para>&nbsp;</para>
381     </sect2>
382
383     <sect2 xml:id="kernel-sysctl">
384       <title>System Tuning and Controls</title>
385
386       <para>&nbsp;</para>
387     </sect2>
388   </sect1>
389
390   <sect1 xml:id="drivers">
391     <title>Devices and Drivers</title>
392
393     <para>This section covers changes and additions to devices and
394       device drivers since &release.prev;.</para>
395
396     <sect2 xml:id="drivers-device">
397       <title>Device Drivers</title>
398
399       <para revision="331586" contrib="sponsor"
400         sponsor="&mellanox;">The &man.mlx5io.4; driver has been added,
401         providing an interface to manage supported Connect-X&nbsp;4
402         and Connect-X&nbsp;5 network adapters.</para>
403     </sect2>
404
405     <sect2 xml:id="drivers-storage">
406       <title>Storage Drivers</title>
407
408       <para>&nbsp;</para>
409     </sect2>
410
411     <sect2 xml:id="drivers-network">
412       <title>Network Drivers</title>
413
414       <para>&nbsp;</para>
415     </sect2>
416   </sect1>
417
418   <sect1 xml:id="hardware">
419     <title>Hardware Support</title>
420
421     <para>This section covers general hardware support for physical
422       machines, hypervisors, and virtualization environments, as well
423       as hardware changes and updates that do not otherwise fit in
424       other sections of this document.</para>
425
426     <sect2 xml:id="hardware-support">
427       <title>Hardware Support</title>
428
429       <para revision="331500">Support for the TAIO
430         <acronym>USB</acronym> multi-protocol adapter
431         (<acronym>TUMPA</acronym>) has been added.</para>
432     </sect2>
433
434     <sect2 xml:id="hardware-virtualization">
435       <title>Virtualization Support</title>
436
437       <para revision="321413">Support for &man.virtio.console.4; has
438         been added to &man.bhyve.4;.</para>
439     </sect2>
440
441     <sect2 xml:id="hardware-arm">
442       <title>ARM Support</title>
443
444       <para>&nbsp;</para>
445     </sect2>
446   </sect1>
447
448   <sect1 xml:id="storage">
449     <title>Storage</title>
450
451     <para>This section covers changes and additions to file systems
452       and other storage subsystems, both local and networked.</para>
453
454     <sect2 xml:id="storage-general">
455       <title>General Storage</title>
456
457       <para>&nbsp;</para>
458     </sect2>
459
460     <sect2 xml:id="storage-net">
461       <title>Networked Storage</title>
462
463       <para>&nbsp;</para>
464     </sect2>
465
466     <sect2 xml:id="storage-zfs">
467       <title>ZFS</title>
468
469       <para>&nbsp;</para>
470     </sect2>
471
472     <sect2 xml:id="storage-geom">
473       <title><literal>geom(4)</literal></title>
474
475       <para>&nbsp;</para>
476     </sect2>
477   </sect1>
478
479   <sect1 xml:id="boot">
480     <title>Boot Loader Changes</title>
481
482     <para>This section covers the boot loader, boot menu, and other
483       boot-related changes.</para>
484
485     <sect2 xml:id="boot-loader">
486       <title>Boot Loader Changes</title>
487
488       <para revision="329114">The length of <acronym>GELI</acronym>
489         passphrases entered when booting a system with encrypted disks
490         is now hidden by default.  See the configuration options in
491         &man.geli.8; to restore the previous behavior.</para>
492     </sect2>
493
494     <sect2 xml:id="boot-menu">
495       <title>Boot Menu Changes</title>
496
497       <para>&nbsp;</para>
498     </sect2>
499   </sect1>
500
501   <sect1 xml:id="network">
502     <title>Networking</title>
503
504     <para>This section describes changes that affect networking in
505       &os;.</para>
506
507     <sect2 xml:id="network-general">
508       <title>General Network Changes</title>
509
510       <para>&nbsp;</para>
511     </sect2>
512
513     <sect2 xml:id="network-protocols">
514       <title>Network Protocols</title>
515
516       <para>&nbsp;</para>
517     </sect2>
518   </sect1>
519
520   <sect1 xml:id="ports">
521     <title>Ports Collection and Package Infrastructure</title>
522
523     <para>This section covers changes to the &os;&nbsp;Ports
524       Collection, package infrastructure, and package maintenance and
525       installation tools.</para>
526
527     <sect2 xml:id="ports-infrastructure">
528       <title>Infrastructure Changes</title>
529
530       <para>&nbsp;</para>
531     </sect2>
532
533     <sect2 xml:id="ports-packages ">
534       <title>Packaging Changes</title>
535
536       <para>&nbsp;</para>
537     </sect2>
538   </sect1>
539
540   <sect1 xml:id="doc">
541     <title>Documentation</title>
542
543     <para>This section covers changes to the &os;&nbsp;Documentation
544       Project sources and toolchain.</para>
545
546     <sect2 xml:id="doc-sources">
547       <title>Documentation Source Changes</title>
548
549       <para>&nbsp;</para>
550     </sect2>
551
552     <sect2 xml:id="doc-toolchain">
553       <title>Documentation Toolchain Changes</title>
554
555       <para>&nbsp;</para>
556     </sect2>
557   </sect1>
558
559   <sect1 xml:id="releng">
560     <title>Release Engineering and Integration</title>
561
562     <para>This section convers changes that are specific to the
563       &os;&nbsp;Release Engineering processes.</para>
564
565     <sect2 xml:id="releng-changes">
566       <title>Integration Changes</title>
567
568       <para revision="326892">Amazon&reg; EC2&trade; instances now
569         keep their clocks synchronized using the Amazon Time Sync
570         Service, the <acronym>NTP</acronym> service internal to the
571         EC2&trade; infrastructure.</para>
572     </sect2>
573   </sect1>
574 </article>