release/doc/en_US.ISO8859-1/relnotes/article.xml

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   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: 278934 -->
  26
  27     <copyright>
  28       <year>2015</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 revision="266463">The default &man.newsyslog.conf.5; now
 163         includes files in the
 164         <filename>/etc/newsyslog.conf.d/</filename> and
 165         <filename>/usr/local/etc/newsyslog.conf.d/</filename>
 166         directories by default for &man.newsyslog.8;.</para>
 167
 168       <para revision="270675">The &man.mailwrapper.8; utility has been
 169         updated to use &man.mailer.conf.5; from the
 170         <literal>LOCALBASE</literal> environment variable, which
 171         defaults to <filename class="directory">/usr/local</filename>
 172         if unset.</para>
 173
 174       <para revision="272350">The <literal>MK_ARM_EABI</literal>
 175         &man.src.conf.5; option has been removed.</para>
 176     </sect2>
 177
 178     <sect2 xml:id="userland-programs">
 179       <title>Userland Application Changes</title>
 180
 181       <para revision="258838" contrib="sponsor" sponsor="&ff;,
 182         &google;" sponsorurl="">The &man.casperd.8; daemon has been
 183         added, which provides access to functionality that is not
 184         available in the <quote>capability mode</quote>
 185         sandbox.</para>
 186
 187       <para revision="260594">When unable to load a kernel module with
 188         &man.kldload.8;, a message informing to view output of
 189         &man.dmesg.8; is now printed, opposed to the previous output
 190         <quote>Exec format error.</quote>.</para>
 191
 192       <para revision="260910">Allow &man.pciconf.8; to identify PCI
 193         devices that are attached to a driver to be identified by
 194         their device name instead of just the selector.  Additionally,
 195         an optional device argument to the <literal>-l</literal> flag
 196         to restrict the output to only listing details about a single
 197         device.</para>
 198
 199       <para revision="260913">A new flag, <quote>onifconsole</quote>
 200         has been added to <filename>/etc/ttys</filename>.  This allows
 201         the system to provide a login prompt via serial console if the
 202         device is an active kernel console, otherwise it is equivalent
 203         to <literal>off</literal>.</para>
 204
 205       <para revision="260926">Support for displaying VPD for PCI
 206         devices via &man.pciconf.8; has been added.</para>
 207
 208       <para revision="261498">&man.ping.8; protects against malicious
 209         network packets using the Capsicum framework to drop
 210         privileges.</para>
 211
 212       <para revision="265229">The &man.ps.1; utility has been
 213         updated to include the <literal>-J</literal> flag, used to
 214         filter output by matching &man.jail.8; IDs and names.
 215         Additionally, argument <literal>0</literal> can be used to
 216         <literal>-J</literal> to only list processes running on the
 217         host system.</para>
 218
 219       <para revision="265249">The &man.top.1; utility has been updated
 220         to filter by &man.jail.8; ID or name, in followup to the
 221         &man.ps.1; change in <literal>r265229</literal>.</para>
 222
 223       <para revision="265995">The Blowfish &man.crypt.3; default
 224         format has been changed to
 225         <literal>&dollar;2b&dollar;</literal>.</para>
 226
 227       <para revision="266209">The &man.pmcstat.8; utility has been
 228         updated to include a new flag, <literal>-l</literal>, which
 229         ends event collection after the specified number of
 230         seconds.</para>
 231
 232       <para revision="270745">The &man.ps.1; utility has been updated
 233         to include a new keyword, <quote>tracer</quote>, which
 234         displays the <acronym>PID</acronym> of the tracing
 235         process.</para>
 236
 237       <para revision="271482">Support for adding empty partitions has
 238         been added to the &man.mkimg.1; utility.</para>
 239
 240       <para revision="272166">The &man.primes.6; utility has been
 241         updated to correctly enumerate prime numbers between
 242         <literal>4295098369</literal> and
 243         <literal>3825123056546413050</literal>, which prior to this
 244         change, it would be possible for returned values to be
 245         incorrectly identified as prime numbers.</para>
 246
 247       <para revision="272198">The &man.mkimg.1; utility has been
 248         updated to include three options used to print information
 249         about &man.mkimg.1; itself:</para>
 250
 251       <informaltable frame="none" pgwide="0">
 252         <tgroup cols="2">
 253           <colspec colwidth="1*"/>
 254           <colspec colwidth="1*"/>
 255           <thead>
 256             <row>
 257               <entry>Option</entry>
 258               <entry>Output</entry>
 259             </row>
 260           </thead>
 261
 262           <tbody>
 263             <row>
 264               <entry><literal>--version</literal></entry>
 265               <entry>The current version of the &man.mkimg.1;
 266                 utility</entry>
 267             </row>
 268
 269             <row>
 270               <entry><literal>--formats</literal></entry>
 271               <entry>The disk image file formats supported by
 272                 &man.mkimg.1;</entry>
 273             </row>
 274
 275             <row>
 276               <entry><literal>--schemes</literal></entry>
 277               <entry>The partition schemes supported by
 278                 &man.mkimg.1;</entry>
 279             </row>
 280           </tbody>
 281         </tgroup>
 282       </informaltable>
 283
 284       <para revision="272488">Userland &man.ctf.5; support in
 285         &man.dtrace.1; has been added.  With this change,
 286         &man.dtrace.1; is able to resolve type info for function and
 287         <acronym>USDT</acronym> probe arguments, and function return
 288         values.</para>
 289
 290       <para revision="274960">The &man.elfdump.1; utility has been
 291         updated to support capability mode provided by
 292         &man.capsicum.4;.</para>
 293
 294       <para revision="275680" contrib="sponsor" sponsor="&ff;">The
 295         &man.fstyp.8; utility has been added, which is used to
 296         determine the filesystem on a specified device.</para>
 297
 298       <para revision="276881">The <literal>libedit</literal> library
 299         has been updated to support <acronym>UTF</acronym>-8, which
 300         additionally provides unicode support to &man.sh.1;.</para>
 301
 302       <para revision="277166" arch="powerpc">The &man.ptrace.2; system
 303         call has been updated include support for Altivec registers on
 304         &os;/&arch.powerpc;.</para>
 305
 306       <para revision="278320">A new device control utility,
 307         &man.devctl.8; has been added, which allows making
 308         administrative changes to individual devices, such as
 309         attaching and detaching drivers, and enabling and disabling
 310         devices.  The &man.devctl.8; utility uses the new
 311         &man.devctl.3; library.</para>
 312
 313       <para revision="279315" contrib="sponsor" sponsor="&ff;">The
 314         &man.uefisign.8; utility has been added.</para>
 315     </sect2>
 316
 317     <sect2 xml:id="userland-contrib">
 318       <title>Contributed Software</title>
 319
 320       <para revision="258884" contrib="sponsor"
 321         sponsor="&darpa_afrl;">&man.lldb.1; has been updated to
 322         upstream snapshot version r196259.</para>
 323
 324       <para revision="259626">Timezone data files have been updated to
 325         version 2013i.</para>
 326
 327       <para revision="260445">&man.byacc.1; has been updated to
 328         version 20140101.</para>
 329
 330       <para revision="261071">&man.jemalloc.3; has been updated to
 331         version 3.5.0.</para>
 332
 333       <para revision="261212"><application>bmake</application> has
 334         been updated to version 20140101.</para>
 335
 336       <para revision="261283"><application>libc++</application> has
 337         been updated to version 3.4.</para>
 338
 339       <para revision="261320"><application>OpenSSH</application> has
 340         been updated to 6.5p1.</para>
 341
 342       <para revision="261344"><application>mdocml</application> has
 343         been updated to version 1.12.3.</para>
 344
 345       <para revision="261991"><application>LLVM</application> and
 346         <application>Clang</application> have been updated to
 347         version 3.4.</para>
 348
 349       <para revision="266527"
 350         role="merged"><application>Sendmail</application> has been
 351         updated from 8.14.7 to 8.14.9.</para>
 352
 353       <para revision="276577"><application>file</application> has been
 354         updated to version 5.22.</para>
 355
 356       <para revision="275718">The <application>binutils</application>
 357         suite of utilities has been updated to include upstream
 358         patches that add new relocations for &arch.powerpc;
 359         support.</para>
 360
 361       <para revision="276398" contrib="sponsor" sponsor="&ff;">The
 362         <application>ELF Tool Chain</application> has been updated to
 363         upstream revision r3136.</para>
 364
 365       <para revision="276551">The <application>texinfo</application>
 366         utility and <literal>info</literal> pages were removed from
 367         the base system.  The <filename
 368           role="package">print/texinfo</filename> port should be
 369         installed on systems where <literal>info</literal> pages are
 370         needed.</para>
 371
 372       <para revision="276796" contrib="sponsor" sponsor="&ff;">The ELF
 373         object manipulation tools
 374         <application>addr2line</application>,
 375         <application>elfcopy (strip)</application>,
 376         <application>nm</application>,
 377         <application>size</application>, and
 378         <application>strings</application> were switched to the
 379         versions from the ELF Tool Chain project.</para>
 380
 381       <para revision="276881">The <literal>libedit</literal> library
 382         has been updated to include <acronym>UTF-8</acronym> support,
 383         adding <acronym>UTF-8</acronym> support to the &man.sh.1;
 384         shell.</para>
 385
 386       <para revision="277270"><application>OpenSSL</application> has
 387         been updated to version 1.0.1l.</para>
 388
 389       <para revision="278433">The &man.xz.1; utility has been udpated
 390         to version 5.2.0.</para>
 391
 392       <para revision="278433">The &man.xz.1; utility has been updated
 393         to support multi-threaded compression.</para>
 394
 395       <para revision="278970">The &man.acpi.4; subsystem has been
 396         updated to version 20150204.</para>
 397     </sect2>
 398
 399     <sect2 xml:id="userland-installer">
 400       <title>Installation and Configuration Tools</title>
 401
 402       <para revision="271539">The &man.bsdinstall.8; partition editor
 403         and &man.sade.8; utility have been updated to include native
 404         <acronym>ZFS</acronym> support.</para>
 405
 406       <para revision="272274">The &os; installation utility,
 407         &man.bsdinstall.8;, has been updated to set the
 408         <literal>canmount</literal> &man.zfs.8; property to
 409         <literal>off</literal> for the <filename
 410           class="directory">/var</filename> dataset, preventing the
 411         contents of directories within <filename
 412           class="directory">/var</filename> from conflicting when
 413         using multiple boot environments, such as that provided by
 414         <filename role="package">sysutils/beadm</filename>.</para>
 415
 416       <para revision="274394">The &man.bsdconfig.8; utility has been
 417         updated to skip the initial &man.tzsetup.8;
 418         <acronym>UTC</acronym> versus wall-clock time prompt when run
 419         in a virtual machine, determined when the
 420         <literal>kern.vm_guest</literal> &man.sysctl.8; is set to
 421         <literal>1</literal>.</para>
 422
 423       <para revision="275874">The &man.bsdinstall.8; utility has been
 424         updated to use the new &man.dpv.3; library to display progress
 425         when extracting the &os; distributions.</para>
 426     </sect2>
 427
 428     <sect2 xml:id="userland-rc">
 429       <title><filename class="directory">/etc/rc.d</filename>
 430         Scripts</title>
 431
 432       <para revision="270676">The &man.rc.8; subsystem has been
 433         updated to allow configuring services in <filename
 434           class="directory">&dollar;{LOCALBASE}/etc/rc.conf.d/</filename>.
 435         If <literal>LOCALBASE</literal> is unset, it defaults to
 436         <filename class="directory">/usr/local</filename>.</para>
 437
 438       <para revision="275299">The <filename>mrouted</filename>
 439         &man.rc.8; script has been removed from the base system.  An
 440         equivalent script is available from the <filename
 441           role="package">net/mrouted</filename> port.</para>
 442
 443       <para revision="279463" contrib="sponsor"
 444         sponsor="&sandvine;">A new &man.rc.8; script,
 445         <filename>iovctl</filename>, has been added, which allows
 446         automatically starting the &man.iovctl.8; utility at
 447         boot.</para>
 448     </sect2>
 449
 450     <sect2 xml:id="userland-periodic">
 451       <title><filename class="directory">/etc/periodic</filename>
 452         Scripts</title>
 453
 454       <para revision="271321">The daily &man.periodic.8; script
 455         <filename>110.clean-tmps</filename> has been updated to avoid
 456         crossing filesystem mount boundaries when cleaning files in
 457         <filename class="directory">/tmp</filename>.</para>
 458     </sect2>
 459
 460     <sect2 xml:id="userland-libraries">
 461       <title>Runtime Libraries and API</title>
 462
 463       <para revision="268461">The &man.readline.3; library is now
 464         statically linked in software within the base system, and the
 465         shared library is no longer installed, allowing the Ports
 466         Collection to use a modern version of the library.</para>
 467
 468       <para revision="272273">The &man.strptime.3; library has been
 469         updated to add support for <acronym>POSIX</acronym>-2001
 470         features <literal>%U</literal> and
 471         <literal>%W</literal>.</para>
 472
 473       <para revision="272842,272848" contrib="sponsor"
 474         sponsor="&ff;">The &man.dl.iterate.phdr.3; library has been
 475         changed to always return the path name of the
 476         <acronym>ELF</acronym> object in the
 477         <literal>dlpi_name</literal> structure member.</para>
 478
 479       <para revision="273806" contrib="sponsor" sponsor="&chelsio;">A
 480         userland library for Chelsio Terminator 5 based iWARP cards
 481         has been added, allowing userland <acronym>RDMA</acronym>
 482         applications to work over compatible
 483         <acronym>NIC</acronym>s.</para>
 484
 485       <para revision="274987">The &man.gpio.3; library has been added,
 486         providing a wrapper around the &man.gpio.4; kernel
 487         interface.</para>
 488
 489       <para revision="277610">The <literal>futimens()</literal> and
 490         <literal>utimensat()</literal> system calls have been
 491         added.  See &man.utimensat.2; for more information.</para>
 492
 493       <para revision="278934">The &man.elf.3; compile-time dependency
 494         has been removed from <filename>dtri.o</filename>, which
 495         allows adding <application>DTrace</application> probes to
 496         userland applications and libraries without also linking
 497         against &man.elf.3;.</para>
 498
 499       <para revision="279186">The &man.setmode.3; function has been
 500         updated to consistently set <literal>errno</literal> on
 501         failure.</para>
 502     </sect2>
 503
 504     <sect2 xml:id="userland-abi">
 505       <title>ABI Compatibility</title>
 506
 507       <para revision="271982">The &linux; compatibility version has
 508         been updated to <literal>2.6.18</literal>.  The
 509         <literal>compat.linux.osrelease</literal> &man.sysctl.8; is
 510         evaluated when building the <filename
 511           role="package">emulators/linux-c6</filename> and related
 512         ports.</para>
 513     </sect2>
 514   </sect1>
 515
 516   <sect1 xml:id="kernel">
 517     <title>Kernel</title>
 518
 519     <para>This section covers changes to kernel configurations, system
 520       tuning, and system control parameters that are not otherwise
 521       categorized.</para>
 522
 523     <sect2 xml:id="kernel-bugfix">
 524       <title>Kernel Bug Fixes</title>
 525
 526       <para revision="265876">A kernel bug that inhibited proper
 527         functionality of the <literal>dev.cpu.0.freq</literal>
 528         &man.sysctl.8; on &intel; processors with Turbo
 529         Boost&nbsp;&trade; enabled has been fixed.</para>
 530
 531       <para revision="271697" arch="powerpc">Support for
 532         &man.dtrace.1; stack tracing has been fixed for
 533         &os;/&arch.powerpc;, using the <literal>trapexit()</literal>
 534         and <literal>asttrapexit()</literal> functions instead of
 535         checking within addressed kernel space.</para>
 536
 537       <para revision="272089">A bug in &man.ipfw.4; that could
 538         potentially lead to a kernel panic when using &man.dummynet.4;
 539         at layer 2 has been fixed.</para>
 540     </sect2>
 541
 542     <sect2 xml:id="kernel-config">
 543       <title>Kernel Configuration</title>
 544
 545       <para revision="266531">The <literal>IMAGACT_BINMISC</literal>
 546         kernel configuration option has been enabled by default,
 547         which enables application execution through emulators, such
 548         as <application>Qemu</application>.</para>
 549
 550       <para revision="268045">The <literal>VT</literal> kernel
 551         configuration file has been removed, and the &man.vt.4;
 552         driver is included in the <literal>GENERIC</literal> kernel.
 553         To enable &man.vt.4;, enter <literal>set kern.vty=vt</literal>
 554         at the &man.loader.8; prompt during boot, or add
 555         <literal>kern.vty=vt</literal> to &man.loader.conf.5; and
 556         reboot the system.</para>
 557
 558       <para revision="277904">The &man.config.8; utility has been
 559         updated to allow using a non-standard <filename
 560           class="directory">src/</filename> tree, specified as an
 561         argument to the <literal>-s</literal> flag.</para>
 562
 563       <para revision="277990" arch="powerpc64">The
 564         &os;/&arch.powerpc64; kernel now builds as
 565         a position-independent executable, allowing the kernel to be
 566         loaded into and run from any physical or virtual
 567         address.</para>
 568
 569       <important>
 570         <para>This change requires an update to &man.loader.8;.
 571           The userland and kernel must be updated before rebooting the
 572           system.</para>
 573       </important>
 574
 575       <para revision="279189" contrib="sponsor" sponsor="&ff;"
 576         arch="powerpc">Kernel support for Vector-Scalar eXtension
 577         (<acronym>VSX</acronym>) found on POWER7 and POWER8 hardware
 578         has been added.</para>
 579
 580       <para revision="279252" contrib="sponsor" sponsor="&ff;"
 581         arch="powerpc">The &man.pmap.9; implementation for 64-bit
 582         &powerpc; processors has been overhaulded to improve
 583         concurrency.</para>
 584     </sect2>
 585
 586     <sect2 xml:id="kernel-sysctl">
 587       <title>System Tuning and Controls</title>
 588
 589       <para revision="275140" contrib="sponsor" sponsor="&ff;">The
 590         &man.hwpmc.4; default and maximum callchain depths have been
 591         increased.  The default has been increased from 16 to 32, and
 592         the maximum increased from 32 to 128.</para>
 593
 594       <para revision="279361">The <literal>kern.osrelease</literal>
 595         and <literal>kern.osreldate</literal> are now configurable
 596         &man.jail.8; parameters.</para>
 597     </sect2>
 598   </sect1>
 599
 600   <sect1 xml:id="drivers">
 601     <title>Devices and Drivers</title>
 602
 603     <para>This section covers changes and additions to devices and
 604       device drivers since &release.prev;.</para>
 605
 606     <sect2 xml:id="drivers-device">
 607       <title>Device Drivers</title>
 608
 609       <para revision="260903">Support for GPS ports has been added to
 610         &man.uhso.4;.</para>
 611
 612       <para revision="265132">The &man.full.4; device has been added,
 613         and the <literal>lindev(4)</literal> device has been removed.
 614         Prior to this change, <literal>lindev(4)</literal> provided
 615         only the <filename>/dev/full</filename> character device,
 616         returning <literal>ENOSPC</literal> on write attempts.  As
 617         this device is not specific to &linux;, a native &os; version
 618         has been added.</para>
 619
 620       <para revision="271705">Hardware context support has been
 621         added to the <literal>drm/i915</literal> driver, adding
 622         support for <application>Mesa</application> 9.2 and
 623         later.</para>
 624
 625       <para revision="273178">The &man.vt.4; driver has been updated,
 626         replacing the bitmapped <literal>kern.vt.spclkeys</literal>
 627         &man.sysctl.8; with individual
 628         <literal>kern.vt.kbd_*</literal> variants.</para>
 629
 630       <para revision="273598">The &man.hpet.4; driver has been updated
 631         to create a
 632         <filename>/dev/hpet<replaceable>N</replaceable></filename>
 633         device, providing access to <acronym>HPET</acronym> from
 634         userspace.</para>
 635     </sect2>
 636
 637     <sect2 xml:id="drivers-storage">
 638       <title>Storage Drivers</title>
 639
 640       <para revision="265236" contrib="sponsor"
 641         sponsor="&lsi;, &spectralogic;" sponsorurl="">The &man.mpr.4;
 642         device has been added, providing support for LSI Fusion-MPT
 643         3 12Gb SCSI/SATA controllers.</para>
 644
 645       <para revision="265555" contrib="sponsor"
 646           sponsor="&lsi;">The &man.mrsas.4; driver has been added,
 647         providing support for LSI MegaRAID SAS controllers.  The
 648         &man.mfi.4; driver will attach to the controller, by default.
 649         To enable &man.mrsas.4; add
 650         <literal>hw.mfi.mrsas_enable=1</literal> to
 651         <filename>/boot/loader.conf</filename>, which turns off
 652         &man.mfi.4; device probing.</para>
 653
 654       <note>
 655         <para>At this time, the &man.mfiutil.8; utility and the &os;
 656           version of <application>MegaCLI</application> and
 657           <application>StorCli</application> do not work with
 658           &man.mrsas.4;.</para>
 659       </note>
 660
 661       <para revision="275461" contrib="sponsor" sponsor="&ix;">The
 662         &man.ctl.4; subsystem has been updated, increasing the ports
 663         limit from <literal>128</literal> to <literal>256</literal>,
 664         and <acronym>LUN</acronym> limit from <literal>256</literal>
 665         to <literal>1024</literal>.</para>
 666
 667       <para revision="276526">The <literal>asr(4)</literal> driver has
 668         been removed, and is no longer supported.</para>
 669     </sect2>
 670
 671     <sect2 xml:id="drivers-network">
 672       <title>Network Drivers</title>
 673
 674       <para revision="258830">Support for Broadcom chipsets BCM57764,
 675         BCM57767, BCM57782, BCM57786 and BCM57787 has been added to
 676         &man.bge.4;.</para>
 677
 678       <para revision="260448">Support for the &intel; Centrino&trade;
 679         Wireless-N 135 chipset has been added.</para>
 680
 681       <para revision="260552">Firmware for &intel; Centrino&trade;
 682         Wireless-N 105 devices has been added to the base
 683         system.</para>
 684
 685       <para revision="261975">The deprecated nve(4) driver has been
 686         removed.  Users of NVIDIA nForce MCP network adapters are
 687         advised to use the &man.nfe.4; driver instead, which has been
 688         the default driver for this hardware since
 689         &os;&nbsp;7.0.</para>
 690
 691       <para revision="264601" contrib="sponsor"
 692         sponsor="&darpa_afrl;">The <literal>if_nf10bmac(4)</literal>
 693         device has been added, providing support for NetFPGA-10G
 694         Embedded CPU Ethernet Core.</para>
 695
 696       <note>
 697         <para>The <literal>if_nf10bmac(4)</literal> driver operates on
 698           the FPGA, and is not suited for the PCI host
 699           interface.</para>
 700       </note>
 701
 702       <para revision="265348" contrib="sponsor"
 703         sponsor="&netgate;">The &man.ath.hal.4; driver has been
 704         updated to support the Atheros AR1111 chipset.</para>
 705
 706       <para revision="266770">Support for the &intel; Centrino&trade;
 707         Wireless-N 105 chipset has been added.</para>
 708
 709       <para revision="266757" contrib="sponsor"
 710         sponsor="&chelsio;">Support for the &man.cxgbe.4; Terminator
 711         5 (T5) 10G/40G cards has been added to &man.netmap.4;.</para>
 712
 713       <para revision="272730">The &man.alc.4; driver has been updated
 714         to support AR816x and AR817x ethernet controllers.</para>
 715
 716       <para revision="273331">The &man.vxlan.4; driver has been added,
 717         which creates a virtual Layer 2 (Ethernet) network overlaid in
 718         a Layer 3 (IP/UDP) network.  The &man.vxlan.4; driver is
 719         analogous to &man.vlan.4;, but is designed to be better suited
 720         for large, multiple-tenant datacenter environments.</para>
 721
 722       <para revision="274246" contrib="sponsor" sponsor="&yandex;">The
 723         &man.gre.4; driver has been significantly overhauled, and has
 724         been split into two separate modules, &man.gre.4; and
 725         &man.me.4;.</para>
 726     </sect2>
 727   </sect1>
 728
 729   <sect1 xml:id="hardware">
 730     <title>Hardware Support</title>
 731
 732     <para>This section covers general hardware support for physical
 733       machines, hypervisors, and virtualization environments, as well
 734       as hardware changes and updates that do not otherwise fit in
 735       other sections of this document.</para>
 736
 737     <sect2 xml:id="hardware-support">
 738       <title>Hardware Support</title>
 739
 740       <para revision="268303">The &man.asmc.4; driver has been
 741         updated to support the &apple;&nbsp;MacMini 3,1.</para>
 742
 743       <para revision="268351">Support for &os;/ia64 has been dropped
 744         as of &os;&nbsp;11.</para>
 745
 746       <para revision="274386">An issue that could cause a system to
 747         hang when entering <acronym>ACPI</acronym>
 748         <literal>S3</literal> state (suspend to
 749         <acronym>RAM</acronym>) has been corrected in the &man.acpi.4;
 750         and &man.pci.4; drivers.</para>
 751
 752       <para revision="274733" arch="powerpc">The power management unit
 753         subsystem has been updated to support power button events on
 754         certain &arch.powerpc; hardware, such as aluminum
 755         PowerBook&nbsp;&reg;.</para>
 756
 757       <para revision="275171,275190" arch="powerpc">The &man.hwpmc.4;
 758         driver has been updated to correct performance counter
 759         sampling on G4 (MPC74xxx) and G5 class processors.</para>
 760
 761       <para revision="275732" contrib="sponsor"
 762         sponsor="&ff;,&netgate;">The
 763         <application>OpenCrypto</application> framework has been
 764         updated to include <literal>AES-ICM</literal> and
 765         <literal>AES-GCM</literal> modes, both of which have also been
 766         added to the &man.aesni.4; driver.</para>
 767     </sect2>
 768
 769     <sect2 xml:id="hardware-virtualization">
 770       <title>Virtualization Support</title>
 771
 772       <para revision="260410">Support for the <quote>Virtual Interrupt
 773           Delivery</quote> feature of &intel;&nbsp;VT-x is enabled if
 774         supported by the CPU.  This feature can be disabled by running
 775         <literal>sysctl hw.vmm.vmx.use_apic_vid=0</literal>.
 776         Additionally, to persist this setting across reboots, add
 777         <literal>hw.vmm.vmx.use_apic_vid=0</literal> to
 778         <filename>/etc/sysctl.conf</filename>.</para>
 779
 780       <para revision="260532">Support for <quote>Posted Interrupt
 781           Processing</quote> is enabled if supported by the CPU.  This
 782         feature can be disabled by running <literal>sysctl
 783           hw.vmm.vmx.use_apic_pir=0</literal>.  Additionally, to
 784         persist this setting across reboots, add
 785         <literal>hw.vmm.vmx.use_apic_pir=0</literal> to
 786         <filename>/etc/sysctl.conf</filename>.</para>
 787
 788       <para revision="260582">Unmapped IO support has been added to
 789         &man.virtio_blk.4;.</para>
 790
 791       <para revision="260583">Unmapped IO support has been added to
 792         &man.virtio_scsi.4;.</para>
 793
 794       <para revision="260847">The &man.virtio_random.4; driver has
 795         been added to harvest entropy from the host system.</para>
 796
 797       <para revision="261504">&os;/&arch.i386; guests can be run under
 798         bhyve.</para>
 799
 800       <para revision="267536" contrib="sponsor"
 801         sponsor="&citrix.rd;">Support for running a &os;/&arch.amd64;
 802         <application>Xen</application> guest instance as
 803         <acronym>PVH</acronym> guest has been added.
 804         <acronym>PVH</acronym> mode, short for <quote>Para-Virtualized
 805           Hardware</quote>, uses para-virtualized drivers for boot and
 806         I/O, and uses hardware virtualization extensions for all other
 807         tasks, without the need for emulation.</para>
 808
 809       <para revision="273515">The &man.virtio.console.4; driver has
 810         been added, which provides an interface to VirtIO console
 811         devices through a &man.tty.4; device.</para>
 812     </sect2>
 813
 814     <sect2 xml:id="hardware-arm">
 815       <title>ARM Support</title>
 816
 817       <para revision="260921">The &man.nand.4; device is enabled for
 818         ARM devices by default.</para>
 819
 820       <para revision="273264" arch="armv6">An issue that could cause
 821         instability when detecting <acronym>SD</acronym> cards on the
 822         Raspberry Pi <acronym>SOC</acronym> has been fixed.</para>
 823
 824       <para revision="275963">The <literal>bcm2835_cpufreq</literal>
 825         driver has been added, which supports <acronym>CPU</acronym>
 826         frequency and voltage control on the Raspberry Pi
 827         <acronym>SOC</acronym>.</para>
 828     </sect2>
 829   </sect1>
 830
 831   <sect1 xml:id="storage">
 832     <title>Storage</title>
 833
 834     <para>This section covers changes and additions to file systems
 835       and other storage subsystems, both local and networked.</para>
 836
 837     <sect2 xml:id="storage-general">
 838       <title>General Storage</title>
 839       <para revision="278037" contrib="sponsor" sponsor="&ix;">The
 840         &man.ctl.4; <acronym>LUN</acronym> mapping has been rewritten,
 841         replacing <acronym>iSCSI</acronym>-specific mapping mechanisms
 842         with a new mechanism that works for any port.</para>
 843
 844       <para revision="278354" contrib="sponsor" sponsor="&ix;">The
 845         &man.ctld.8; utility has been updated to allow controlling
 846         non-<acronym>iSCSI</acronym> &man.ctl.4; ports.</para>
 847     </sect2>
 848
 849     <sect2 xml:id="storage-net">
 850       <title>Networked Storage</title>
 851
 852       <para revision="270096" contrib="sponsor" sponsor="&ff;">The new
 853         filesystem automount facility, &man.autofs.5;, has been added.
 854         The new &man.autofs.5; facility is similar to that found in
 855         other &unix;-like operating systems, such as OS&nbsp;X&trade;
 856         and Solaris&trade;.  The &man.autofs.5; facility uses
 857         a &sun;-compatible &man.auto.master.5; configuration file, and
 858         is administered with the &man.automount.8; userland utility,
 859         and the &man.automountd.8; and &man.autounmountd.8;
 860         daemons.</para>
 861     </sect2>
 862
 863     <sect2 xml:id="storage-zfs">
 864       <title>ZFS</title>
 865
 866       <para revision="275748">The <literal>arc_meta_limit</literal>
 867         statistics are now visible through the
 868         <literal>kstat</literal> &man.sysctl.8;.  As a result of this
 869         change, the <literal>vfs.zfs.arc_meta_used</literal>
 870         &man.sysctl.8; has been removed, and replaced with the
 871         <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
 872         &man.sysctl.8;.</para>
 873     </sect2>
 874
 875     <sect2 xml:id="storage-geom">
 876       <title>&man.geom.4;</title>
 877
 878       <para revision="267359">Support for the
 879         <literal>disklabel64</literal> partitioning scheme has been
 880         added to &man.gpart.8;.</para>
 881     </sect2>
 882   </sect1>
 883
 884   <sect1 xml:id="boot">
 885     <title>Boot Loader Changes</title>
 886
 887     <para>This section covers the boot loader, boot menu, and other
 888       boot-related changes.</para>
 889
 890     <sect2 xml:id="boot-loader">
 891       <title>Boot Loader Changes</title>
 892
 893       <para revision="274085">The &man.vt.4; driver has been made the
 894         default system console driver.  The &man.syscons.4; driver is
 895         still available, and can be enabled by adding
 896         <literal>kern.vty=sc</literal> in &man.loader.conf.5;.
 897         Alternatively, &man.syscons.4; can be enabled at boot time by
 898         entering <literal>set kern.vty=sc</literal> at the
 899         &man.loader.8; prompt.</para>
 900     </sect2>
 901
 902     <sect2 xml:id="boot-menu">
 903       <title>Boot Menu Changes</title>
 904
 905       <para>&nbsp;</para>
 906     </sect2>
 907   </sect1>
 908
 909   <sect1 xml:id="network">
 910     <title>Networking</title>
 911
 912     <para>This section describes changes that affect networking in
 913       &os;.</para>
 914
 915     <sect2 xml:id="network-protocols">
 916       <title>Network Procols</title>
 917
 918       <para revision="263140">Support for the IPX network transport
 919         protocol has been removed, and will not be supported in
 920         &os;&nbsp;11 and later releases.</para>
 921
 922       <para revision="272720" contrib="sponsor"
 923         sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym>
 924         blackhole detection (<acronym>RFC</acronym> 4821) has been
 925         added to the &man.tcp.4; stack, disabled by default.  New
 926         control tunables have been added:</para>
 927
 928       <informaltable frame="none" pgwide="0">
 929         <tgroup cols="2">
 930           <colspec colwidth="1*"/>
 931           <colspec colwidth="1*"/>
 932           <thead>
 933             <row>
 934               <entry>Tunable</entry>
 935               <entry>Description</entry>
 936             </row>
 937           </thead>
 938
 939           <tbody>
 940             <row>
 941               <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry>
 942               <entry>Enables or disables <acronym>PLPMTUD</acronym>
 943                 blackhole detection</entry>
 944             </row>
 945
 946             <row>
 947               <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry>
 948               <entry><acronym>MSS</acronym> to try for IPv4</entry>
 949             </row>
 950
 951             <row>
 952               <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry>
 953               <entry><acronym>MSS to try for IPv6</acronym></entry>
 954             </row>
 955           </tbody>
 956         </tgroup>
 957       </informaltable>
 958
 959       <para>New monitoring &man.sysctl.8;s haven been added:</para>
 960
 961       <informaltable frame="none" pgwide="0">
 962         <tgroup cols="2">
 963           <colspec colwidth="1*"/>
 964           <colspec colwidth="1*"/>
 965           <thead>
 966             <row>
 967               <entry>Tunable</entry>
 968               <entry>Description</entry>
 969             </row>
 970           </thead>
 971
 972           <tbody>
 973             <row>
 974               <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry>
 975               <entry>Number of times the code was activated to attempt
 976                 downshifting the <acronym>MSS</acronym></entry>
 977             </row>
 978
 979             <row>
 980               <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry>
 981               <entry>Number of times the blackhole
 982                 <acronym>MSS</acronym> was used in an attempt to
 983                 downshift</entry>
 984             </row>
 985
 986             <row>
 987               <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry>
 988               <entry>Number of times that the blackhole failed to
 989                 connect after downshifting the
 990                 <acronym>MSS</acronym></entry>
 991             </row>
 992           </tbody>
 993         </tgroup>
 994       </informaltable>
 995     </sect2>
 996   </sect1>
 997
 998   <sect1 xml:id="ports">
 999     <title>Ports Collection and Package Infrastructure</title>
1000
1001     <para>This section covers changes to the &os;&nbsp;Ports
1002       Collection, package infrastructure, and package maintenance and
1003       installation tools.</para>
1004
1005     <sect2 xml:id="ports-infrastructure">
1006       <title>Infrastructure Changes</title>
1007
1008       <para>&nbsp;</para>
1009     </sect2>
1010
1011     <sect2 xml:id="ports-packages ">
1012       <title>Packaging Changes</title>
1013
1014       <para>&nbsp;</para>
1015     </sect2>
1016   </sect1>
1017
1018   <sect1 xml:id="doc">
1019     <title>Documentation</title>
1020
1021     <para>This section covers changes to the &os;&nbsp;Documentation
1022       Project sources and toolchain.</para>
1023
1024     <sect2 xml:id="doc-sources">
1025       <title>Documentation Source Changes</title>
1026
1027       <para>&nbsp;</para>
1028     </sect2>
1029
1030     <sect2 xml:id="doc-toolchain">
1031       <title>Documentation Toolchain Changes</title>
1032
1033       <para>&nbsp;</para>
1034     </sect2>
1035   </sect1>
1036
1037   <sect1 xml:id="releng">
1038     <title>Release Engineering and Integration</title>
1039
1040     <para>This section convers changes that are specific to the
1041       &os;&nbsp;Release Engineering processes.</para>
1042
1043     <sect2 xml:id="releng-changes">
1044       <title>Integration Changes</title>
1045
1046       <para revision="277458" contrib="sponsor" sponsor="&ff;">The
1047         Release Engineering build tools have been updated to include
1048         support for producing virtual machine disk images for various
1049         cloud hosting providers.</para>
1050
1051       <para revision="278926">The Release Engineering build tools have
1052         been updated to use multi-threaded &man.xz.1;.  By default,
1053         the number of &man.xz.1; threads is set to the number of cores
1054         available.</para>
1055     </sect2>
1056   </sect1>
1057 </article>