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">
6 <!ENTITY % sponsor PUBLIC "-//FreeBSD//ENTITIES Sponsor Specification//EN" "sponsor.ent">
8 <!ENTITY % vendor PUBLIC "-//FreeBSD//ENTITIES Vendor Specification//EN" "vendor.ent">
10 <!ENTITY security SYSTEM "../../share/xml/security.xml">
11 <!ENTITY errata SYSTEM "../../share/xml/errata.xml">
13 <article xmlns="http://docbook.org/ns/docbook"
14 xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0">
17 <title>&os; &release.current; Release Notes</title>
20 <orgname>The &os; Project</orgname>
23 <pubdate>$FreeBSD$</pubdate>
25 <!-- Last rev: 278934 -->
29 <holder role="mailto:doc@FreeBSD.org">The &os; Documentation
33 <legalnotice xml:id="trademarks" role="trademarks">
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
53 <sect1 xml:id="intro">
54 <title>Introduction</title>
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>
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
67 xlink:href="&release.url;">&release.url;</uri>.</para>
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
75 xlink:href="&release.url;">&release.url;</uri>.</para>
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
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>
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>
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>
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
112 <sect1 xml:id="upgrade">
113 <title>Upgrading from Previous Releases of &os;</title>
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>
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>
129 <para>Upgrading &os; should only be attempted after backing up
130 <emphasis>all</emphasis> data and configuration files.</para>
134 <sect1 xml:id="security-errata">
135 <title>Security and Errata</title>
137 <para>This section lists the various Security Advisories and
138 Errata Notices since &release.prev;.</para>
140 <sect2 xml:id="security">
141 <title>Security Advisories</title>
146 <sect2 xml:id="errata">
147 <title>Errata Notices</title>
153 <sect1 xml:id="userland">
154 <title>Userland</title>
156 <para>This section covers changes and additions to userland
157 applications, contributed software, and system utilities.</para>
159 <sect2 xml:id="userland-config">
160 <title>Userland Configuration Changes</title>
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>
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>
174 <para revision="272350">The <literal>MK_ARM_EABI</literal>
175 &man.src.conf.5; option has been removed.</para>
178 <sect2 xml:id="userland-programs">
179 <title>Userland Application Changes</title>
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>
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>
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
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>
205 <para revision="260926">Support for displaying VPD for PCI
206 devices via &man.pciconf.8; has been added.</para>
208 <para revision="261498">&man.ping.8; protects against malicious
209 network packets using the Capsicum framework to drop
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
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>
223 <para revision="265995">The Blowfish &man.crypt.3; default
224 format has been changed to
225 <literal>$2b$</literal>.</para>
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
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
237 <para revision="271482">Support for adding empty partitions has
238 been added to the &man.mkimg.1; utility.</para>
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>
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>
251 <informaltable frame="none" pgwide="0">
253 <colspec colwidth="1*"/>
254 <colspec colwidth="1*"/>
257 <entry>Option</entry>
258 <entry>Output</entry>
264 <entry><literal>--version</literal></entry>
265 <entry>The current version of the &man.mkimg.1;
270 <entry><literal>--formats</literal></entry>
271 <entry>The disk image file formats supported by
272 &man.mkimg.1;</entry>
276 <entry><literal>--schemes</literal></entry>
277 <entry>The partition schemes supported by
278 &man.mkimg.1;</entry>
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
290 <para revision="274960">The &man.elfdump.1; utility has been
291 updated to support capability mode provided by
292 &man.capsicum.4;.</para>
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>
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>
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>
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>
314 <sect2 xml:id="userland-contrib">
315 <title>Contributed Software</title>
317 <para revision="258884" contrib="sponsor"
318 sponsor="&darpa_afrl;">&man.lldb.1; has been updated to
319 upstream snapshot version r196259.</para>
321 <para revision="259626">Timezone data files have been updated to
322 version 2013i.</para>
324 <para revision="260445">&man.byacc.1; has been updated to
325 version 20140101.</para>
327 <para revision="261071">&man.jemalloc.3; has been updated to
328 version 3.5.0.</para>
330 <para revision="261212"><application>bmake</application> has
331 been updated to version 20140101.</para>
333 <para revision="261283"><application>libc++</application> has
334 been updated to version 3.4.</para>
336 <para revision="261320"><application>OpenSSH</application> has
337 been updated to 6.5p1.</para>
339 <para revision="261344"><application>mdocml</application> has
340 been updated to version 1.12.3.</para>
342 <para revision="261991"><application>LLVM</application> and
343 <application>Clang</application> have been updated to
346 <para revision="266527"
347 role="merged"><application>Sendmail</application> has been
348 updated from 8.14.7 to 8.14.9.</para>
350 <para revision="276577"><application>file</application> has been
351 updated to version 5.22.</para>
353 <para revision="275718">The <application>binutils</application>
354 suite of utilities has been updated to include upstream
355 patches that add new relocations for &arch.powerpc;
358 <para revision="276398" contrib="sponsor" sponsor="&ff;">The
359 <application>ELF Tool Chain</application> has been updated to
360 upstream revision r3136.</para>
362 <para revision="276551">The <application>texinfo</application>
363 utility and <literal>info</literal> pages were removed from
364 the base system. The <filename
365 role="package">print/texinfo</filename> port should be
366 installed on systems where <literal>info</literal> pages are
369 <para revision="276796" contrib="sponsor" sponsor="&ff;">The ELF
370 object manipulation tools
371 <application>addr2line</application>,
372 <application>elfcopy (strip)</application>,
373 <application>nm</application>,
374 <application>size</application>, and
375 <application>strings</application> were switched to the
376 versions from the ELF Tool Chain project.</para>
378 <para revision="276881">The <literal>libedit</literal> library
379 has been updated to include <acronym>UTF-8</acronym> support,
380 adding <acronym>UTF-8</acronym> support to the &man.sh.1;
383 <para revision="277270"><application>OpenSSL</application> has
384 been updated to version 1.0.1l.</para>
386 <para revision="278433">The &man.xz.1; utility has been udpated
387 to version 5.2.0.</para>
389 <para revision="278433">The &man.xz.1; utility has been updated
390 to support multi-threaded compression.</para>
393 <sect2 xml:id="userland-installer">
394 <title>Installation and Configuration Tools</title>
396 <para revision="271539">The &man.bsdinstall.8; partition editor
397 and &man.sade.8; utility have been updated to include native
398 <acronym>ZFS</acronym> support.</para>
400 <para revision="272274">The &os; installation utility,
401 &man.bsdinstall.8;, has been updated to set the
402 <literal>canmount</literal> &man.zfs.8; property to
403 <literal>off</literal> for the <filename
404 class="directory">/var</filename> dataset, preventing the
405 contents of directories within <filename
406 class="directory">/var</filename> from conflicting when
407 using multiple boot environments, such as that provided by
408 <filename role="package">sysutils/beadm</filename>.</para>
410 <para revision="274394">The &man.bsdconfig.8; utility has been
411 updated to skip the initial &man.tzsetup.8;
412 <acronym>UTC</acronym> versus wall-clock time prompt when run
413 in a virtual machine, determined when the
414 <literal>kern.vm_guest</literal> &man.sysctl.8; is set to
415 <literal>1</literal>.</para>
417 <para revision="275874">The &man.bsdinstall.8; utility has been
418 updated to use the new &man.dpv.3; library to display progress
419 when extracting the &os; distributions.</para>
422 <sect2 xml:id="userland-rc">
423 <title><filename class="directory">/etc/rc.d</filename>
426 <para revision="270676">The &man.rc.8; subsystem has been
427 updated to allow configuring services in <filename
428 class="directory">${LOCALBASE}/etc/rc.conf.d/</filename>.
429 If <literal>LOCALBASE</literal> is unset, it defaults to
430 <filename class="directory">/usr/local</filename>.</para>
432 <para revision="275299">The <filename>mrouted</filename>
433 &man.rc.8; script has been removed from the base system. An
434 equivalent script is available from the <filename
435 role="package">net/mrouted</filename> port.</para>
438 <sect2 xml:id="userland-periodic">
439 <title><filename class="directory">/etc/periodic</filename>
442 <para revision="271321">The daily &man.periodic.8; script
443 <filename>110.clean-tmps</filename> has been updated to avoid
444 crossing filesystem mount boundaries when cleaning files in
445 <filename class="directory">/tmp</filename>.</para>
448 <sect2 xml:id="userland-libraries">
449 <title>Runtime Libraries and API</title>
451 <para revision="268461">The &man.readline.3; library is now
452 statically linked in software within the base system, and the
453 shared library is no longer installed, allowing the Ports
454 Collection to use a modern version of the library.</para>
456 <para revision="272273">The &man.strptime.3; library has been
457 updated to add support for <acronym>POSIX</acronym>-2001
458 features <literal>%U</literal> and
459 <literal>%W</literal>.</para>
461 <para revision="272842,272848" contrib="sponsor"
462 sponsor="&ff;">The &man.dl.iterate.phdr.3; library has been
463 changed to always return the path name of the
464 <acronym>ELF</acronym> object in the
465 <literal>dlpi_name</literal> structure member.</para>
467 <para revision="273806" contrib="sponsor" sponsor="&chelsio;">A
468 userland library for Chelsio Terminator 5 based iWARP cards
469 has been added, allowing userland <acronym>RDMA</acronym>
470 applications to work over compatible
471 <acronym>NIC</acronym>s.</para>
473 <para revision="274987">The &man.gpio.3; library has been added,
474 providing a wrapper around the &man.gpio.4; kernel
477 <para revision="277610">The <literal>futimens()</literal> and
478 <literal>utimensat()</literal> system calls have been
479 added. See &man.utimensat.2; for more information.</para>
481 <para revision="278934">The &man.elf.3; compile-time dependency
482 has been removed from <filename>dtri.o</filename>, which
483 allows adding <application>DTrace</application> probes to
484 userland applications and libraries without also linking
485 against &man.elf.3;.</para>
488 <sect2 xml:id="userland-abi">
489 <title>ABI Compatibility</title>
491 <para revision="271982">The &linux; compatibility version has
492 been updated to <literal>2.6.18</literal>. The
493 <literal>compat.linux.osrelease</literal> &man.sysctl.8; is
494 evaluated when building the <filename
495 role="package">emulators/linux-c6</filename> and related
500 <sect1 xml:id="kernel">
501 <title>Kernel</title>
503 <para>This section covers changes to kernel configurations, system
504 tuning, and system control parameters that are not otherwise
507 <sect2 xml:id="kernel-bugfix">
508 <title>Kernel Bug Fixes</title>
510 <para revision="265876">A kernel bug that inhibited proper
511 functionality of the <literal>dev.cpu.0.freq</literal>
512 &man.sysctl.8; on &intel; processors with Turbo
513 Boost ™ enabled has been fixed.</para>
515 <para revision="271697" arch="powerpc">Support for
516 &man.dtrace.1; stack tracing has been fixed for
517 &os;/&arch.powerpc;, using the <literal>trapexit()</literal>
518 and <literal>asttrapexit()</literal> functions instead of
519 checking within addressed kernel space.</para>
521 <para revision="272089">A bug in &man.ipfw.4; that could
522 potentially lead to a kernel panic when using &man.dummynet.4;
523 at layer 2 has been fixed.</para>
526 <sect2 xml:id="kernel-config">
527 <title>Kernel Configuration</title>
529 <para revision="266531">The <literal>IMAGACT_BINMISC</literal>
530 kernel configuration option has been enabled by default,
531 which enables application execution through emulators, such
532 as <application>Qemu</application>.</para>
534 <para revision="268045">The <literal>VT</literal> kernel
535 configuration file has been removed, and the &man.vt.4;
536 driver is included in the <literal>GENERIC</literal> kernel.
537 To enable &man.vt.4;, enter <literal>set kern.vty=vt</literal>
538 at the &man.loader.8; prompt during boot, or add
539 <literal>kern.vty=vt</literal> to &man.loader.conf.5; and
540 reboot the system.</para>
542 <para revision="277904">The &man.config.8; utility has been
543 updated to allow using a non-standard <filename
544 class="directory">src/</filename> tree, specified as an
545 argument to the <literal>-s</literal> flag.</para>
547 <para revision="277990" arch="powerpc64">The
548 &os;/&arch.powerpc64; kernel now builds as
549 a position-independent executable, allowing the kernel to be
550 loaded into and run from any physical or virtual
554 <para>This change requires an update to &man.loader.8;.
555 The userland and kernel must be updated before rebooting the
560 <sect2 xml:id="kernel-sysctl">
561 <title>System Tuning and Controls</title>
563 <para revision="275140" contrib="sponsor" sponsor="&ff;">The
564 &man.hwpmc.4; default and maximum callchain depths have been
565 increased. The default has been increased from 16 to 32, and
566 the maximum increased from 32 to 128.</para>
570 <sect1 xml:id="drivers">
571 <title>Devices and Drivers</title>
573 <para>This section covers changes and additions to devices and
574 device drivers since &release.prev;.</para>
576 <sect2 xml:id="drivers-device">
577 <title>Device Drivers</title>
579 <para revision="260903">Support for GPS ports has been added to
582 <para revision="265132">The &man.full.4; device has been added,
583 and the <literal>lindev(4)</literal> device has been removed.
584 Prior to this change, <literal>lindev(4)</literal> provided
585 only the <filename>/dev/full</filename> character device,
586 returning <literal>ENOSPC</literal> on write attempts. As
587 this device is not specific to &linux;, a native &os; version
588 has been added.</para>
590 <para revision="271705">Hardware context support has been
591 added to the <literal>drm/i915</literal> driver, adding
592 support for <application>Mesa</application> 9.2 and
595 <para revision="273178">The &man.vt.4; driver has been updated,
596 replacing the bitmapped <literal>kern.vt.spclkeys</literal>
597 &man.sysctl.8; with individual
598 <literal>kern.vt.kbd_*</literal> variants.</para>
600 <para revision="273598">The &man.hpet.4; driver has been updated
602 <filename>/dev/hpet<replaceable>N</replaceable></filename>
603 device, providing access to <acronym>HPET</acronym> from
607 <sect2 xml:id="drivers-storage">
608 <title>Storage Drivers</title>
610 <para revision="265236" contrib="sponsor"
611 sponsor="&lsi;, &spectralogic;" sponsorurl="">The &man.mpr.4;
612 device has been added, providing support for LSI Fusion-MPT
613 3 12Gb SCSI/SATA controllers.</para>
615 <para revision="265555" contrib="sponsor"
616 sponsor="&lsi;">The &man.mrsas.4; driver has been added,
617 providing support for LSI MegaRAID SAS controllers. The
618 &man.mfi.4; driver will attach to the controller, by default.
619 To enable &man.mrsas.4; add
620 <literal>hw.mfi.mrsas_enable=1</literal> to
621 <filename>/boot/loader.conf</filename>, which turns off
622 &man.mfi.4; device probing.</para>
625 <para>At this time, the &man.mfiutil.8; utility and the &os;
626 version of <application>MegaCLI</application> and
627 <application>StorCli</application> do not work with
628 &man.mrsas.4;.</para>
631 <para revision="275461" contrib="sponsor" sponsor="&ix;">The
632 &man.ctl.4; subsystem has been updated, increasing the ports
633 limit from <literal>128</literal> to <literal>256</literal>,
634 and <acronym>LUN</acronym> limit from <literal>256</literal>
635 to <literal>1024</literal>.</para>
637 <para revision="276526">The <literal>asr(4)</literal> driver has
638 been removed, and is no longer supported.</para>
641 <sect2 xml:id="drivers-network">
642 <title>Network Drivers</title>
644 <para revision="258830">Support for Broadcom chipsets BCM57764,
645 BCM57767, BCM57782, BCM57786 and BCM57787 has been added to
648 <para revision="260448">Support for the &intel; Centrino™
649 Wireless-N 135 chipset has been added.</para>
651 <para revision="260552">Firmware for &intel; Centrino™
652 Wireless-N 105 devices has been added to the base
655 <para revision="261975">The deprecated nve(4) driver has been
656 removed. Users of NVIDIA nForce MCP network adapters are
657 advised to use the &man.nfe.4; driver instead, which has been
658 the default driver for this hardware since
659 &os; 7.0.</para>
661 <para revision="264601" contrib="sponsor"
662 sponsor="&darpa_afrl;">The <literal>if_nf10bmac(4)</literal>
663 device has been added, providing support for NetFPGA-10G
664 Embedded CPU Ethernet Core.</para>
667 <para>The <literal>if_nf10bmac(4)</literal> driver operates on
668 the FPGA, and is not suited for the PCI host
672 <para revision="265348" contrib="sponsor"
673 sponsor="&netgate;">The &man.ath.hal.4; driver has been
674 updated to support the Atheros AR1111 chipset.</para>
676 <para revision="266770">Support for the &intel; Centrino™
677 Wireless-N 105 chipset has been added.</para>
679 <para revision="266757" contrib="sponsor"
680 sponsor="&chelsio;">Support for the &man.cxgbe.4; Terminator
681 5 (T5) 10G/40G cards has been added to &man.netmap.4;.</para>
683 <para revision="272730">The &man.alc.4; driver has been updated
684 to support AR816x and AR817x ethernet controllers.</para>
686 <para revision="273331">The &man.vxlan.4; driver has been added,
687 which creates a virtual Layer 2 (Ethernet) network overlaid in
688 a Layer 3 (IP/UDP) network. The &man.vxlan.4; driver is
689 analogous to &man.vlan.4;, but is designed to be better suited
690 for large, multiple-tenant datacenter environments.</para>
692 <para revision="274246" contrib="sponsor" sponsor="&yandex;">The
693 &man.gre.4; driver has been significantly overhauled, and has
694 been split into two separate modules, &man.gre.4; and
699 <sect1 xml:id="hardware">
700 <title>Hardware Support</title>
702 <para>This section covers general hardware support for physical
703 machines, hypervisors, and virtualization environments, as well
704 as hardware changes and updates that do not otherwise fit in
705 other sections of this document.</para>
707 <sect2 xml:id="hardware-support">
708 <title>Hardware Support</title>
710 <para revision="268303">The &man.asmc.4; driver has been
711 updated to support the &apple; MacMini 3,1.</para>
713 <para revision="268351">Support for &os;/ia64 has been dropped
714 as of &os; 11.</para>
716 <para revision="274386">An issue that could cause a system to
717 hang when entering <acronym>ACPI</acronym>
718 <literal>S3</literal> state (suspend to
719 <acronym>RAM</acronym>) has been corrected in the &man.acpi.4;
720 and &man.pci.4; drivers.</para>
722 <para revision="274733" arch="powerpc">The power management unit
723 subsystem has been updated to support power button events on
724 certain &arch.powerpc; hardware, such as aluminum
725 PowerBook ®.</para>
727 <para revision="275171,275190" arch="powerpc">The &man.hwpmc.4;
728 driver has been updated to correct performance counter
729 sampling on G4 (MPC74xxx) and G5 class processors.</para>
731 <para revision="275732" contrib="sponsor"
732 sponsor="&ff;,&netgate;">The
733 <application>OpenCrypto</application> framework has been
734 updated to include <literal>AES-ICM</literal> and
735 <literal>AES-GCM</literal> modes, both of which have also been
736 added to the &man.aesni.4; driver.</para>
739 <sect2 xml:id="hardware-virtualization">
740 <title>Virtualization Support</title>
742 <para revision="260410">Support for the <quote>Virtual Interrupt
743 Delivery</quote> feature of &intel; VT-x is enabled if
744 supported by the CPU. This feature can be disabled by running
745 <literal>sysctl hw.vmm.vmx.use_apic_vid=0</literal>.
746 Additionally, to persist this setting across reboots, add
747 <literal>hw.vmm.vmx.use_apic_vid=0</literal> to
748 <filename>/etc/sysctl.conf</filename>.</para>
750 <para revision="260532">Support for <quote>Posted Interrupt
751 Processing</quote> is enabled if supported by the CPU. This
752 feature can be disabled by running <literal>sysctl
753 hw.vmm.vmx.use_apic_pir=0</literal>. Additionally, to
754 persist this setting across reboots, add
755 <literal>hw.vmm.vmx.use_apic_pir=0</literal> to
756 <filename>/etc/sysctl.conf</filename>.</para>
758 <para revision="260582">Unmapped IO support has been added to
759 &man.virtio_blk.4;.</para>
761 <para revision="260583">Unmapped IO support has been added to
762 &man.virtio_scsi.4;.</para>
764 <para revision="260847">The &man.virtio_random.4; driver has
765 been added to harvest entropy from the host system.</para>
767 <para revision="261504">&os;/&arch.i386; guests can be run under
770 <para revision="267536" contrib="sponsor"
771 sponsor="&citrix.rd;">Support for running a &os;/&arch.amd64;
772 <application>Xen</application> guest instance as
773 <acronym>PVH</acronym> guest has been added.
774 <acronym>PVH</acronym> mode, short for <quote>Para-Virtualized
775 Hardware</quote>, uses para-virtualized drivers for boot and
776 I/O, and uses hardware virtualization extensions for all other
777 tasks, without the need for emulation.</para>
779 <para revision="273515">The &man.virtio.console.4; driver has
780 been added, which provides an interface to VirtIO console
781 devices through a &man.tty.4; device.</para>
784 <sect2 xml:id="hardware-arm">
785 <title>ARM Support</title>
787 <para revision="260921">The &man.nand.4; device is enabled for
788 ARM devices by default.</para>
790 <para revision="273264" arch="armv6">An issue that could cause
791 instability when detecting <acronym>SD</acronym> cards on the
792 Raspberry Pi <acronym>SOC</acronym> has been fixed.</para>
794 <para revision="275963">The <literal>bcm2835_cpufreq</literal>
795 driver has been added, which supports <acronym>CPU</acronym>
796 frequency and voltage control on the Raspberry Pi
797 <acronym>SOC</acronym>.</para>
801 <sect1 xml:id="storage">
802 <title>Storage</title>
804 <para>This section covers changes and additions to file systems
805 and other storage subsystems, both local and networked.</para>
807 <sect2 xml:id="storage-general">
808 <title>General Storage</title>
809 <para revision="278037" contrib="sponsor" sponsor="&ix;">The
810 &man.ctl.4; <acronym>LUN</acronym> mapping has been rewritten,
811 replacing <acronym>iSCSI</acronym>-specific mapping mechanisms
812 with a new mechanism that works for any port.</para>
814 <para revision="278354" contrib="sponsor" sponsor="&ix;">The
815 &man.ctld.8; utility has been updated to allow controlling
816 non-<acronym>iSCSI</acronym> &man.ctl.4; ports.</para>
819 <sect2 xml:id="storage-net">
820 <title>Networked Storage</title>
822 <para revision="270096" contrib="sponsor" sponsor="&ff;">The new
823 filesystem automount facility, &man.autofs.5;, has been added.
824 The new &man.autofs.5; facility is similar to that found in
825 other &unix;-like operating systems, such as OS X™
826 and Solaris™. The &man.autofs.5; facility uses
827 a &sun;-compatible &man.auto.master.5; configuration file, and
828 is administered with the &man.automount.8; userland utility,
829 and the &man.automountd.8; and &man.autounmountd.8;
833 <sect2 xml:id="storage-zfs">
836 <para revision="275748">The <literal>arc_meta_limit</literal>
837 statistics are now visible through the
838 <literal>kstat</literal> &man.sysctl.8;. As a result of this
839 change, the <literal>vfs.zfs.arc_meta_used</literal>
840 &man.sysctl.8; has been removed, and replaced with the
841 <literal>kstat.zfs.misc.arcstats.arc_meta_used</literal>
842 &man.sysctl.8;.</para>
845 <sect2 xml:id="storage-geom">
846 <title>&man.geom.4;</title>
848 <para revision="267359">Support for the
849 <literal>disklabel64</literal> partitioning scheme has been
850 added to &man.gpart.8;.</para>
854 <sect1 xml:id="boot">
855 <title>Boot Loader Changes</title>
857 <para>This section covers the boot loader, boot menu, and other
858 boot-related changes.</para>
860 <sect2 xml:id="boot-loader">
861 <title>Boot Loader Changes</title>
863 <para revision="274085">The &man.vt.4; driver has been made the
864 default system console driver. The &man.syscons.4; driver is
865 still available, and can be enabled by adding
866 <literal>kern.vty=sc</literal> in &man.loader.conf.5;.
867 Alternatively, &man.syscons.4; can be enabled at boot time by
868 entering <literal>set kern.vty=sc</literal> at the
869 &man.loader.8; prompt.</para>
872 <sect2 xml:id="boot-menu">
873 <title>Boot Menu Changes</title>
879 <sect1 xml:id="network">
880 <title>Networking</title>
882 <para>This section describes changes that affect networking in
885 <sect2 xml:id="network-protocols">
886 <title>Network Procols</title>
888 <para revision="263140">Support for the IPX network transport
889 protocol has been removed, and will not be supported in
890 &os; 11 and later releases.</para>
892 <para revision="272720" contrib="sponsor"
893 sponsor="&limelight;">Support for <acronym>PLPMTUD</acronym>
894 blackhole detection (<acronym>RFC</acronym> 4821) has been
895 added to the &man.tcp.4; stack, disabled by default. New
896 control tunables have been added:</para>
898 <informaltable frame="none" pgwide="0">
900 <colspec colwidth="1*"/>
901 <colspec colwidth="1*"/>
904 <entry>Tunable</entry>
905 <entry>Description</entry>
911 <entry><literal>net.inet.tcp.pmtud_blackhole_detection</literal></entry>
912 <entry>Enables or disables <acronym>PLPMTUD</acronym>
913 blackhole detection</entry>
917 <entry><literal>net.inet.tcp.pmtud_blackhole_mss</literal></entry>
918 <entry><acronym>MSS</acronym> to try for IPv4</entry>
922 <entry><literal>net.inet.tcp.v6pmtud_blackhole_mss</literal></entry>
923 <entry><acronym>MSS to try for IPv6</acronym></entry>
929 <para>New monitoring &man.sysctl.8;s haven been added:</para>
931 <informaltable frame="none" pgwide="0">
933 <colspec colwidth="1*"/>
934 <colspec colwidth="1*"/>
937 <entry>Tunable</entry>
938 <entry>Description</entry>
944 <entry><literal>net.inet.tcp.pmtud_blackhole_activated</literal></entry>
945 <entry>Number of times the code was activated to attempt
946 downshifting the <acronym>MSS</acronym></entry>
950 <entry><literal>net.inet.tcp.pmtud_blackhole_min_activated</literal></entry>
951 <entry>Number of times the blackhole
952 <acronym>MSS</acronym> was used in an attempt to
957 <entry><literal>net.inet.tcp.pmtud_blackhole_failed</literal></entry>
958 <entry>Number of times that the blackhole failed to
959 connect after downshifting the
960 <acronym>MSS</acronym></entry>
968 <sect1 xml:id="ports">
969 <title>Ports Collection and Package Infrastructure</title>
971 <para>This section covers changes to the &os; Ports
972 Collection, package infrastructure, and package maintenance and
973 installation tools.</para>
975 <sect2 xml:id="ports-infrastructure">
976 <title>Infrastructure Changes</title>
981 <sect2 xml:id="ports-packages ">
982 <title>Packaging Changes</title>
989 <title>Documentation</title>
991 <para>This section covers changes to the &os; Documentation
992 Project sources and toolchain.</para>
994 <sect2 xml:id="doc-sources">
995 <title>Documentation Source Changes</title>
1000 <sect2 xml:id="doc-toolchain">
1001 <title>Documentation Toolchain Changes</title>
1007 <sect1 xml:id="releng">
1008 <title>Release Engineering and Integration</title>
1010 <para>This section convers changes that are specific to the
1011 &os; Release Engineering processes.</para>
1013 <sect2 xml:id="releng-changes">
1014 <title>Integration Changes</title>
1016 <para revision="277458" contrib="sponsor" sponsor="&ff;">The
1017 Release Engineering build tools have been updated to include
1018 support for producing virtual machine disk images for various
1019 cloud hosting providers.</para>
1021 <para revision="278926">The Release Engineering build tools have
1022 been updated to use multi-threaded &man.xz.1;. By default,
1023 the number of &man.xz.1; threads is set to the number of cores