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&os; &release.current; Release Notes The &os; Project $FreeBSD$ 2015 The &os; Documentation Project &tm-attrib.freebsd; &tm-attrib.ibm; &tm-attrib.ieee; &tm-attrib.intel; &tm-attrib.sparc; &tm-attrib.general; The release notes for &os; &release.current; contain a summary of the changes made to the &os; base system on the &release.branch; development line. This document lists applicable security advisories that were issued since the last release, as well as significant changes to the &os; kernel and userland. Some brief remarks on upgrading are also presented. Introduction This document contains the release notes for &os; &release.current;. It describes recently added, changed, or deleted features of &os;. It also provides some notes on upgrading from previous versions of &os;. The &release.type; distribution to which these release notes apply represents the latest point along the &release.branch; development branch since &release.branch; was created. Information regarding pre-built, binary &release.type; distributions along this branch can be found at &release.url;. The &release.type; distribution to which these release notes apply represents a point along the &release.branch; development branch between &release.prev; and the future &release.next;. Information regarding pre-built, binary &release.type; distributions along this branch can be found at &release.url;. This distribution of &os; &release.current; is a &release.type; distribution. It can be found at &release.url; or any of its mirrors. More information on obtaining this (or other) &release.type; distributions of &os; can be found in the Obtaining &os; appendix to the &os; Handbook. All users are encouraged to consult the release errata before installing &os;. The errata document is updated with late-breaking information discovered late in the release cycle or after the release. Typically, it contains information on known bugs, security advisories, and corrections to documentation. An up-to-date copy of the errata for &os; &release.current; can be found on the &os; Web site. + + This document describes the most user-visible new or changed + features in &os; since &release.prev;. In general, changes + described here are unique to the &release.branch; branch unless + specifically marked as &merged; features. + + Typical release note items document recent security + advisories issued after &release.prev;, new drivers or hardware + support, new commands or options, major bug fixes, or + contributed software upgrades. They may also list changes to + major ports/packages or release engineering practices. Clearly + the release notes cannot list every single change made to &os; + between releases; this document focuses primarily on security + advisories, user-visible changes, and major architectural + improvements. Upgrading from Previous Releases of &os; Binary upgrades between RELEASE versions (and snapshots of the various security branches) are supported using the &man.freebsd-update.8; utility. The binary upgrade procedure will update unmodified userland utilities, as well as unmodified GENERIC kernels distributed as a part of an official &os; release. The &man.freebsd-update.8; utility requires that the host being upgraded have Internet connectivity. Source-based upgrades (those based on recompiling the &os; base system from source code) from previous versions are supported, according to the instructions in /usr/src/UPDATING. Upgrading &os; should only be attempted after backing up all data and configuration files. - - What's New + + Security and Errata - This section describes the most user-visible new or changed - features in &os; since &release.prev;. In general, changes - described here are unique to the &release.branch; branch unless - specifically marked as &merged; features. + This section lists the various Security Advisories and + Errata Notices since &release.prev;. - Typical release note items document recent security - advisories issued after &release.prev;, new drivers or hardware - support, new commands or options, major bug fixes, or - contributed software upgrades. They may also list changes to - major ports/packages or release engineering practices. Clearly - the release notes cannot list every single change made to &os; - between releases; this document focuses primarily on security - advisories, user-visible changes, and major architectural - improvements. - Security Advisories No advisories. - - Kernel Changes + + Errata Notices - Support for GPS ports has been added to - &man.uhso.4;. + No errata notices. - The if_nf10bmac(4) - device has been added, providing support for NetFPGA-10G - Embedded CPU Ethernet Core. + + - - The if_nf10bmac(4) driver operates on - the FPGA, and is not suited for the PCI host - interface. - + + Userland - The &man.full.4; device has been added, - and the lindev(4) device has been removed. - Prior to this change, lindev(4) provided - only the /dev/full character device, - returning ENOSPC on write attempts. As - this device is not specific to &linux;, a native &os; version - has been added. + This section covers changes and additions to userland + applications, contributed software, and system utilities. - The &man.mpr.4; - device has been added, providing support for LSI Fusion-MPT - 3 12Gb SCSI/SATA controllers. + + Userland Configuration Changes - The &man.mrsas.4; driver has been added, - providing support for LSI MegaRAID SAS controllers. The - &man.mfi.4; driver will attach to the controller, by default. - To enable &man.mrsas.4; add - hw.mfi.mrsas_enable=1 to - /boot/loader.conf, which turns off - &man.mfi.4; device probing. + The default &man.newsyslog.conf.5; now + includes files in the + /etc/newsyslog.conf.d/ and + /usr/local/etc/newsyslog.conf.d/ + directories by default for &man.newsyslog.8;. - - At this time, the &man.mfiutil.8; utility and the &os; - version of MegaCLI and - StorCli do not work with - &man.mrsas.4;. - + The &man.mailwrapper.8; utility has been + updated to use &man.mailer.conf.5; from the + LOCALBASE environment variable, which + defaults to /usr/local + if unset. - A kernel bug that inhibited proper - functionality of the dev.cpu.0.freq - &man.sysctl.8; on &intel; processors with Turbo - Boost ™ enabled has been fixed. - - The IMAGACT_BINMISC - kernel configuration option has been enabled by default, - which enables application execution through emulators, such - as Qemu. - - Support for the &man.cxgbe.4; Terminator - 5 (T5) 10G/40G cards has been added to &man.netmap.4;. - - The VT kernel - configuration file has been removed, and the &man.vt.4; - driver is included in the GENERIC kernel. - To enable &man.vt.4;, enter set kern.vty=vt - at the &man.loader.8; prompt during boot, or add - kern.vty=vt to &man.loader.conf.5; and - reboot the system. - - Support for - &man.dtrace.1; stack tracing has been fixed for - &os;/&arch.powerpc;, using the trapexit() - and asttrapexit() functions instead of - checking within addressed kernel space. - - Hardware context support has been - added to the drm/i915 driver, adding - support for Mesa 9.2 and - later. - - The &man.vt.4; driver has been updated, - replacing the bitmapped kern.vt.spclkeys - &man.sysctl.8; with individual - kern.vt.kbd_* variants. - - The &man.hpet.4; driver has been updated - to create a - /dev/hpetN - device, providing access to HPET from - userspace. - - The &man.vt.4; driver has been made the - default system console driver. The &man.syscons.4; driver is - still available, and can be enabled by adding - kern.vty=sc in &man.loader.conf.5;. - Alternatively, &man.syscons.4; can be enabled at boot time by - entering set kern.vty=sc at the - &man.loader.8; prompt. - - An issue that could cause a system to - hang when entering ACPI - S3 state (suspend to - RAM) has been corrected in the &man.acpi.4; - and &man.pci.4; drivers. - - The power management unit - subsystem has been updated to support power button events on - certain &arch.powerpc; hardware, such as aluminum - PowerBook ®. - - The &man.hwpmc.4; - driver has been updated to correct performance counter - sampling on G4 (MPC74xxx) and G5 class processors. - - The - OpenCrypto framework has been - updated to include AES-ICM and - AES-GCM modes, both of which have also been - added to the &man.aesni.4; driver. - - - Virtualization Support - - Support for the Virtual - Interrupt Delivery feature of &intel; VT-x is - enabled if supported by the CPU. This feature can be - disabled by running sysctl - hw.vmm.vmx.use_apic_vid=0. Additionally, to - persist this setting across reboots, add - hw.vmm.vmx.use_apic_vid=0 to - /etc/sysctl.conf. - - Support for Posted Interrupt - Processing is enabled if supported by the CPU. - This feature can be disabled by running sysctl - hw.vmm.vmx.use_apic_pir=0. Additionally, to - persist this setting across reboots, add - hw.vmm.vmx.use_apic_pir=0 to - /etc/sysctl.conf. - - Unmapped IO support has been added to - &man.virtio_blk.4;. - - Unmapped IO support has been added to - &man.virtio_scsi.4;. - - The &man.virtio_random.4; driver has - been added to harvest entropy from the host system. - - Support for running - a &os;/&arch.amd64; Xen guest - instance as PVH guest has been added. - PVH mode, short for - Para-Virtualized Hardware, uses - para-virtualized drivers for boot and I/O, and uses hardware - virtualization extensions for all other tasks, without the - need for emulation. - - The &man.virtio.console.4; driver has - been added, which provides an interface to VirtIO console - devices through a &man.tty.4; device. - - - - ARM Support - - The &man.nand.4; device is enabled for - ARM devices by default. - - An issue that could cause - instability when detecting SD cards on - the Raspberry Pi SOC has been - fixed. - - The bcm2835_cpufreq - driver has been added, which supports CPU - frequency and voltage control on the Raspberry Pi - SOC. - - - - Boot Loader Changes - -   - - - - Hardware Support - - The &man.asmc.4; driver has been - updated to support the &apple; MacMini 3,1. - - Support for &os;/ia64 has been dropped - as of &os; 11. - - - Multimedia Support - -   - - - - Network Interface Support - - Support for Broadcom chipsets - BCM57764, BCM57767, BCM57782, BCM57786 and BCM57787 has - been added to &man.bge.4;. - - Support for the &intel; - Centrino™ Wireless-N 135 chipset has been - added. - - Firmware for &intel; Centrino™ - Wireless-N 105 devices has been added to the base - system. - - The deprecated nve(4) driver has - been removed. Users of NVIDIA nForce MCP network adapters - are advised to use the &man.nfe.4; driver instead, which - has been the default driver for this hardware since - &os; 7.0. - - The &man.ath.hal.4; driver has been - updated to support the Atheros AR1111 chipset. - - Support for the &intel; - Centrino™ Wireless-N 105 chipset has been - added. - - A bug in &man.ipfw.4; that could - potentially lead to a kernel panic when using - &man.dummynet.4; at layer 2 has been fixed. - - The &man.alc.4; driver has been - updated to support AR816x and AR817x ethernet - controllers. - - The &man.vxlan.4; driver has been - added, which creates a virtual Layer 2 (Ethernet) network - overlaid in a Layer 3 (IP/UDP) network. The &man.vxlan.4; - driver is analogous to &man.vlan.4;, but is designed to be - better suited for large, multiple-tenant datacenter - environments. - - The &man.gre.4; driver has been - significantly overhauled, and has been split into two - separate modules, &man.gre.4; and &man.me.4;. - - - - - Network Protocols - - Support for the IPX network transport - protocol has been removed, and will not be supported in - &os; 11 and later releases. - - Support for PLPMTUD - blackhole detection (RFC 4821) has been - added to the &man.tcp.4; stack, disabled by default. New - control tunables have been added: - - - - - - - - Tunable - Description - - - - - - net.inet.tcp.pmtud_blackhole_detection - Enables or disables PLPMTUD - blackhole detection - - - - net.inet.tcp.pmtud_blackhole_mss - MSS to try for IPv4 - - - - net.inet.tcp.v6pmtud_blackhole_mss - MSS to try for IPv6 - - - - - - New monitoring &man.sysctl.8;s haven been added: - - - - - - - - Tunable - Description - - - - - - net.inet.tcp.pmtud_blackhole_activated - Number of times the code was activated to - attempt downshifting the - MSS - - - - net.inet.tcp.pmtud_blackhole_min_activated - Number of times the blackhole - MSS was used in an attempt to - downshift - - - - net.inet.tcp.pmtud_blackhole_failed - Number of times that the blackhole failed to - connect after downshifting the - MSS - - - - - - - - Disks and Storage - - Support for the - disklabel64 partitioning scheme has been - added to &man.gpart.8;. - - The asr(4) driver - has been removed, and is no longer supported. - - The - &man.ctl.4; subsystem has been updated, increasing the ports - limit from 128 to 256, - and LUN limit from 256 - to 1024. - - - - File Systems - - The - new filesystem automount facility, &man.autofs.5;, has been - added. The new &man.autofs.5; facility is similar to that - found in other &unix;-like operating systems, such as - OS X™ and Solaris™. The &man.autofs.5; - facility uses a &sun;-compatible &man.auto.master.5; - configuration file, and is administered with the - &man.automount.8; userland utility, and the - &man.automountd.8; and &man.autounmountd.8; daemons. - - - ZFS - - The - arc_meta_limit statistics are now - visible through the kstat - &man.sysctl.8;. As a result of this change, the - vfs.zfs.arc_meta_used &man.sysctl.8; - has been removed, and replaced with the - kstat.zfs.misc.arcstats.arc_meta_used - &man.sysctl.8;. - - + The MK_ARM_EABI + &man.src.conf.5; option has been removed. - - Userland Changes + + Userland Application Changes The &man.casperd.8; daemon has been added, which provides access to functionality that is not available in the capability mode sandbox. When unable to load a kernel module with &man.kldload.8;, a message informing to view output of &man.dmesg.8; is now printed, opposed to the previous output Exec format error.. Allow &man.pciconf.8; to identify PCI devices that are attached to a driver to be identified by their device name instead of just the selector. Additionally, an optional device argument to the -l flag to restrict the output to only listing details about a single device. A new flag, onifconsole has been added to /etc/ttys. This allows the system to provide a login prompt via serial console if the device is an active kernel console, otherwise it is equivalent to off. Support for displaying VPD for PCI devices via &man.pciconf.8; has been added. &man.ping.8; protects against malicious network packets using the Capsicum framework to drop privileges. - &os;/&arch.i386; guests can be run under - bhyve. - The &man.ps.1; utility has been updated to include the -J flag, used to filter output by matching &man.jail.8; IDs and names. Additionally, argument 0 can be used to -J to only list processes running on the host system. The &man.top.1; utility has been updated to filter by &man.jail.8; ID or name, in followup to the &man.ps.1; change in r265229. The Blowfish &man.crypt.3; default format has been changed to $2b$. The &man.pmcstat.8; utility has been updated to include a new flag, -l, which ends event collection after the specified number of seconds. - The default &man.newsyslog.conf.5; now - includes files in the - /etc/newsyslog.conf.d/ and - /usr/local/etc/newsyslog.conf.d/ - directories by default for &man.newsyslog.8;. - - The &man.readline.3; library is now - statically linked in software within the base system, and the - shared library is no longer installed, allowing the Ports - Collection to use a modern version of the library. - - The &man.mailwrapper.8; utility has been - updated to use &man.mailer.conf.5; from the - LOCALBASE environment variable, which - defaults to /usr/local - if unset. - The &man.ps.1; utility has been updated to include a new keyword, tracer, which displays the PID of the tracing process. Support for adding empty partitions has been added to the &man.mkimg.1; utility. - The &man.bsdinstall.8; partition editor - and &man.sade.8; utility have been updated to include native - ZFS support. - The &man.primes.6; utility has been updated to correctly enumerate prime numbers between 4295098369 and 3825123056546413050, which prior to this change, it would be possible for returned values to be incorrectly identified as prime numbers. The &man.mkimg.1; utility has been updated to include three options used to print information about &man.mkimg.1; itself: Option Output --version The current version of the &man.mkimg.1; utility --formats The disk image file formats supported by &man.mkimg.1; --schemes The partition schemes supported by &man.mkimg.1; - The &man.strptime.3; library has been - updated to add support for POSIX-2001 - features %U and - %W. - - The &os; installation utility, - &man.bsdinstall.8;, has been updated to set the - canmount &man.zfs.8; property to - off for the /var dataset, preventing the - contents of directories within /var from conflicting when - using multiple boot environments, such as that provided by - sysutils/beadm. - - The MK_ARM_EABI - &man.src.conf.5; option has been removed. - Userland &man.ctf.5; support in &man.dtrace.1; has been added. With this change, &man.dtrace.1; is able to resolve type info for function and USDT probe arguments, and function return values. - The &man.dl.iterate.phdr.3; library has been - changed to always return the path name of the - ELF object in the - dlpi_name structure member. - - A - userland library for Chelsio Terminator 5 based iWARP cards - has been added, allowing userland RDMA - applications to work over compatible - NICs. - - The &man.bsdconfig.8; utility has been - updated to skip the initial &man.tzsetup.8; - UTC versus wall-clock time prompt when run - in a virtual machine, determined when the - kern.vm_guest &man.sysctl.8; is set to - 1. - The &man.elfdump.1; utility has been updated to support capability mode provided by &man.capsicum.4;. - The &man.gpio.3; library has been added, - providing a wrapper around the &man.gpio.4; kernel - interface. - The &man.fstyp.8; utility has been added, which is used to determine the filesystem on a specified device. - The &man.bsdinstall.8; utility has been - updated to use the new &man.dpv.3; library to display progress - when extracting the &os; distributions. - The libedit library has been updated to support UTF-8, which additionally provides unicode support to &man.sh.1;. The &man.ptrace.2; system call has been updated include support for Altivec registers on &os;/&arch.powerpc;. - - - <acronym>ABI</acronym> Compatibility - - The &linux; compatibility version has - been updated to 2.6.18. The - compat.linux.osrelease &man.sysctl.8; is - evaluated when building the emulators/linux-c6 and related - ports. - - - - <filename>/etc/rc.d</filename> Scripts - - The &man.rc.8; subsystem has been - updated to allow configuring services in ${LOCALBASE}/etc/rc.conf.d/. - If LOCALBASE is unset, it defaults to - /usr/local. - - The mrouted - &man.rc.8; script has been removed from the base system. An - equivalent script is available from the net/mrouted port. - - - - <filename>/etc/periodic</filename> Scripts - - The daily &man.periodic.8; script - 110.clean-tmps has been updated to - avoid crossing filesystem mount boundaries when cleaning - files in /tmp. - - + Contributed Software &man.lldb.1; has been updated to upstream snapshot version r196259. Timezone data files have been updated to version 2013i. &man.byacc.1; has been updated to version 20140101. &man.jemalloc.3; has been updated to version 3.5.0. bmake has been updated to version 20140101. libc++ has been updated to version 3.4. OpenSSH has been updated to 6.5p1. mdocml has been updated to version 1.12.3. LLVM and Clang have been updated to version 3.4. Sendmail has been updated from 8.14.7 to 8.14.9. file has been updated to version 5.22. The binutils suite of utilities has been updated to include upstream patches that add new relocations for &arch.powerpc; support. The ELF Tool Chain has been updated to upstream revision r3136. The texinfo utility and info pages were removed from the base system. The print/texinfo port should be installed on systems where info pages are needed. The ELF object manipulation tools addr2line, elfcopy (strip), nm, size, and strings were switched to the versions from the ELF Tool Chain project. The libedit library has been updated to include UTF-8 support, adding UTF-8 support to the &man.sh.1; shell. OpenSSL has been updated to version 1.0.1l. - - Ports/Packages Collection Infrastructure + + Installation and Configuration Tools + The &man.bsdinstall.8; partition editor + and &man.sade.8; utility have been updated to include native + ZFS support. + + The &os; installation utility, + &man.bsdinstall.8;, has been updated to set the + canmount &man.zfs.8; property to + off for the /var dataset, preventing the + contents of directories within /var from conflicting when + using multiple boot environments, such as that provided by + sysutils/beadm. + + The &man.bsdconfig.8; utility has been + updated to skip the initial &man.tzsetup.8; + UTC versus wall-clock time prompt when run + in a virtual machine, determined when the + kern.vm_guest &man.sysctl.8; is set to + 1. + + The &man.bsdinstall.8; utility has been + updated to use the new &man.dpv.3; library to display progress + when extracting the &os; distributions. + + + + <filename class="directory">/etc/rc.d</filename> + Scripts + + The &man.rc.8; subsystem has been + updated to allow configuring services in ${LOCALBASE}/etc/rc.conf.d/. + If LOCALBASE is unset, it defaults to + /usr/local. + + The mrouted + &man.rc.8; script has been removed from the base system. An + equivalent script is available from the net/mrouted port. + + + + <filename class="directory">/etc/periodic</filename> + Scripts + + The daily &man.periodic.8; script + 110.clean-tmps has been updated to avoid + crossing filesystem mount boundaries when cleaning files in + /tmp. + + + + Runtime Libraries and API + + The &man.readline.3; library is now + statically linked in software within the base system, and the + shared library is no longer installed, allowing the Ports + Collection to use a modern version of the library. + + The &man.strptime.3; library has been + updated to add support for POSIX-2001 + features %U and + %W. + + The &man.dl.iterate.phdr.3; library has been + changed to always return the path name of the + ELF object in the + dlpi_name structure member. + + A + userland library for Chelsio Terminator 5 based iWARP cards + has been added, allowing userland RDMA + applications to work over compatible + NICs. + + The &man.gpio.3; library has been added, + providing a wrapper around the &man.gpio.4; kernel + interface. + + + + ABI Compatibility + + The &linux; compatibility version has + been updated to 2.6.18. The + compat.linux.osrelease &man.sysctl.8; is + evaluated when building the emulators/linux-c6 and related + ports. + + + + + Kernel + + This section covers changes to kernel configurations, system + tuning, and system control parameters that are not otherwise + categorized. + + + Kernel Bug Fixes + + A kernel bug that inhibited proper + functionality of the dev.cpu.0.freq + &man.sysctl.8; on &intel; processors with Turbo + Boost ™ enabled has been fixed. + + Support for + &man.dtrace.1; stack tracing has been fixed for + &os;/&arch.powerpc;, using the trapexit() + and asttrapexit() functions instead of + checking within addressed kernel space. + + A bug in &man.ipfw.4; that could + potentially lead to a kernel panic when using &man.dummynet.4; + at layer 2 has been fixed. + + + + Kernel Configuration + + The IMAGACT_BINMISC + kernel configuration option has been enabled by default, + which enables application execution through emulators, such + as Qemu. + + The VT kernel + configuration file has been removed, and the &man.vt.4; + driver is included in the GENERIC kernel. + To enable &man.vt.4;, enter set kern.vty=vt + at the &man.loader.8; prompt during boot, or add + kern.vty=vt to &man.loader.conf.5; and + reboot the system. + + + + System Tuning and Controls +   + - - Release Engineering and Integration + + Devices and Drivers - The - Release Engineering build tools have been updated to include - support for producing virtual machine disk images for various - cloud hosting providers. + This section covers changes and additions to devices and + device drivers since &release.prev;. + + + Device Drivers + + Support for GPS ports has been added to + &man.uhso.4;. + + The &man.full.4; device has been added, + and the lindev(4) device has been removed. + Prior to this change, lindev(4) provided + only the /dev/full character device, + returning ENOSPC on write attempts. As + this device is not specific to &linux;, a native &os; version + has been added. + + Hardware context support has been + added to the drm/i915 driver, adding + support for Mesa 9.2 and + later. + + The &man.vt.4; driver has been updated, + replacing the bitmapped kern.vt.spclkeys + &man.sysctl.8; with individual + kern.vt.kbd_* variants. + + The &man.hpet.4; driver has been updated + to create a + /dev/hpetN + device, providing access to HPET from + userspace. - - Documentation + + Storage Drivers + The &man.mpr.4; + device has been added, providing support for LSI Fusion-MPT + 3 12Gb SCSI/SATA controllers. + + The &man.mrsas.4; driver has been added, + providing support for LSI MegaRAID SAS controllers. The + &man.mfi.4; driver will attach to the controller, by default. + To enable &man.mrsas.4; add + hw.mfi.mrsas_enable=1 to + /boot/loader.conf, which turns off + &man.mfi.4; device probing. + + + At this time, the &man.mfiutil.8; utility and the &os; + version of MegaCLI and + StorCli do not work with + &man.mrsas.4;. + + + The + &man.ctl.4; subsystem has been updated, increasing the ports + limit from 128 to 256, + and LUN limit from 256 + to 1024. + + The asr(4) driver has + been removed, and is no longer supported. + + + + Network Drivers + + Support for Broadcom chipsets BCM57764, + BCM57767, BCM57782, BCM57786 and BCM57787 has been added to + &man.bge.4;. + + Support for the &intel; Centrino™ + Wireless-N 135 chipset has been added. + + Firmware for &intel; Centrino™ + Wireless-N 105 devices has been added to the base + system. + + The deprecated nve(4) driver has been + removed. Users of NVIDIA nForce MCP network adapters are + advised to use the &man.nfe.4; driver instead, which has been + the default driver for this hardware since + &os; 7.0. + + The if_nf10bmac(4) + device has been added, providing support for NetFPGA-10G + Embedded CPU Ethernet Core. + + + The if_nf10bmac(4) driver operates on + the FPGA, and is not suited for the PCI host + interface. + + + The &man.ath.hal.4; driver has been + updated to support the Atheros AR1111 chipset. + + Support for the &intel; Centrino™ + Wireless-N 105 chipset has been added. + + Support for the &man.cxgbe.4; Terminator + 5 (T5) 10G/40G cards has been added to &man.netmap.4;. + + The &man.alc.4; driver has been updated + to support AR816x and AR817x ethernet controllers. + + The &man.vxlan.4; driver has been added, + which creates a virtual Layer 2 (Ethernet) network overlaid in + a Layer 3 (IP/UDP) network. The &man.vxlan.4; driver is + analogous to &man.vlan.4;, but is designed to be better suited + for large, multiple-tenant datacenter environments. + + The + &man.gre.4; driver has been significantly overhauled, and has + been split into two separate modules, &man.gre.4; and + &man.me.4;. + + + + + Hardware Support + + This section covers general hardware support for physical + machines, hypervisors, and virtualization environments, as well + as hardware changes and updates that do not otherwise fit in + other sections of this document. + + + Hardware Support + + The &man.asmc.4; driver has been + updated to support the &apple; MacMini 3,1. + + Support for &os;/ia64 has been dropped + as of &os; 11. + + An issue that could cause a system to + hang when entering ACPI + S3 state (suspend to + RAM) has been corrected in the &man.acpi.4; + and &man.pci.4; drivers. + + The power management unit + subsystem has been updated to support power button events on + certain &arch.powerpc; hardware, such as aluminum + PowerBook ®. + + The &man.hwpmc.4; + driver has been updated to correct performance counter + sampling on G4 (MPC74xxx) and G5 class processors. + + The + OpenCrypto framework has been + updated to include AES-ICM and + AES-GCM modes, both of which have also been + added to the &man.aesni.4; driver. + + + + Virtualization Support + + Support for the Virtual Interrupt + Delivery feature of &intel; VT-x is enabled if + supported by the CPU. This feature can be disabled by running + sysctl hw.vmm.vmx.use_apic_vid=0. + Additionally, to persist this setting across reboots, add + hw.vmm.vmx.use_apic_vid=0 to + /etc/sysctl.conf. + + Support for Posted Interrupt + Processing is enabled if supported by the CPU. This + feature can be disabled by running sysctl + hw.vmm.vmx.use_apic_pir=0. Additionally, to + persist this setting across reboots, add + hw.vmm.vmx.use_apic_pir=0 to + /etc/sysctl.conf. + + Unmapped IO support has been added to + &man.virtio_blk.4;. + + Unmapped IO support has been added to + &man.virtio_scsi.4;. + + The &man.virtio_random.4; driver has + been added to harvest entropy from the host system. + + &os;/&arch.i386; guests can be run under + bhyve. + + Support for running a &os;/&arch.amd64; + Xen guest instance as + PVH guest has been added. + PVH mode, short for Para-Virtualized + Hardware, uses para-virtualized drivers for boot and + I/O, and uses hardware virtualization extensions for all other + tasks, without the need for emulation. + + The &man.virtio.console.4; driver has + been added, which provides an interface to VirtIO console + devices through a &man.tty.4; device. + + + + ARM Support + + The &man.nand.4; device is enabled for + ARM devices by default. + + An issue that could cause + instability when detecting SD cards on the + Raspberry Pi SOC has been fixed. + + The bcm2835_cpufreq + driver has been added, which supports CPU + frequency and voltage control on the Raspberry Pi + SOC. + + + + + Storage + + This section covers changes and additions to file systems + and other storage subsystems, both local and networked. + + + Networked Storage + + The new + filesystem automount facility, &man.autofs.5;, has been added. + The new &man.autofs.5; facility is similar to that found in + other &unix;-like operating systems, such as OS X™ + and Solaris™. The &man.autofs.5; facility uses + a &sun;-compatible &man.auto.master.5; configuration file, and + is administered with the &man.automount.8; userland utility, + and the &man.automountd.8; and &man.autounmountd.8; + daemons. + + + + ZFS + + The arc_meta_limit + statistics are now visible through the + kstat &man.sysctl.8;. As a result of this + change, the vfs.zfs.arc_meta_used + &man.sysctl.8; has been removed, and replaced with the + kstat.zfs.misc.arcstats.arc_meta_used + &man.sysctl.8;. + + + + &man.geom.4; + + Support for the + disklabel64 partitioning scheme has been + added to &man.gpart.8;. + + + + + Boot Loader Changes + + This section covers the boot loader, boot menu, and other + boot-related changes. + + + Boot Loader Changes + + The &man.vt.4; driver has been made the + default system console driver. The &man.syscons.4; driver is + still available, and can be enabled by adding + kern.vty=sc in &man.loader.conf.5;. + Alternatively, &man.syscons.4; can be enabled at boot time by + entering set kern.vty=sc at the + &man.loader.8; prompt. + + + + Boot Menu Changes +   + + + + + Networking + + This section describes changes that affect networking in + &os;. + + + Network Procols + + Support for the IPX network transport + protocol has been removed, and will not be supported in + &os; 11 and later releases. + + Support for PLPMTUD + blackhole detection (RFC 4821) has been + added to the &man.tcp.4; stack, disabled by default. New + control tunables have been added: + + + + + + + + Tunable + Description + + + + + + net.inet.tcp.pmtud_blackhole_detection + Enables or disables PLPMTUD + blackhole detection + + + + net.inet.tcp.pmtud_blackhole_mss + MSS to try for IPv4 + + + + net.inet.tcp.v6pmtud_blackhole_mss + MSS to try for IPv6 + + + + + + New monitoring &man.sysctl.8;s haven been added: + + + + + + + + Tunable + Description + + + + + + net.inet.tcp.pmtud_blackhole_activated + Number of times the code was activated to attempt + downshifting the MSS + + + + net.inet.tcp.pmtud_blackhole_min_activated + Number of times the blackhole + MSS was used in an attempt to + downshift + + + + net.inet.tcp.pmtud_blackhole_failed + Number of times that the blackhole failed to + connect after downshifting the + MSS + + + + + + + + + Ports Collection and Package Infrastructure + + This section covers changes to the &os; Ports + Collection, package infrastructure, and package maintenance and + installation tools. + + + Infrastructure Changes + +   + + + + Packaging Changes + +   + + + + + Documentation + + This section covers changes to the &os; Documentation + Project sources and toolchain. + + + Documentation Source Changes + +   + + + + Documentation Toolchain Changes + +   + + + + + Release Engineering and Integration + + This section convers changes that are specific to the + &os; Release Engineering processes. + + + Integration Changes + + The + Release Engineering build tools have been updated to include + support for producing virtual machine disk images for various + cloud hosting providers.