Alphabetize the kernel changes section by manpage reference or
keyword, where possible.
This commit is contained in:
Bruce A. Mah
parent
3bfbfd1770
commit
eb2e201983
@ -72,6 +72,63 @@
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<sect2 id="kernel">
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<title>Kernel Changes</title>
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<para arch="i386">The &man.amdpm.4; driver has been added to
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provide access to the system monitoring functions of the AMD 756
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chipset. &merged;</para>
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<para>The &man.agp.4; driver for AGP devices has been added. &merged;</para>
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<para>A new &man.ddb.4; command <command>show pcpu</command> lists
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some of the per-CPU data.</para>
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<para>Two new &man.ddb.4; commands, <command>hwatch</command> and
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<command>dhwatch</command>, have been introduced. Analogous to
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<command>watch</command> and <command>dwatch</command>, they install
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hardware watchpoints (as opposed to software watchpoints) if supported
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by the architecture. &merged;</para>
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<para>&man.devfs.5;, which allows entries in the
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<filename>/dev</filename> directory to be built automatically and
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supports more flexible attachment of devices, has been largely
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reworked. &man.devfs.5; is now enabled by default and can be
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disabled by the <literal>NODEVFS</literal> kernel option.</para>
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<para>The dgm driver has been removed in favor of the digi driver.</para>
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<para>A new digi driver has been added to support PCI Xr-based and ISA
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Xem Digiboard cards. A new &man.digictl.8; program is (mainly) used to
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re-initialize cards that have external port modules attached such as
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the PC/Xem.</para>
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<para>An &man.eaccess.2; system call has been added, similar to
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&man.access.2; except that the former uses effective credentials
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rather than real credentials.</para>
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<para arch="i386">The &man.ichsmb.4; driver for the Intel 82801AA
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(ICH) SMBus controller and compatibles has been
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added. &merged;</para>
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<para>Each &man.jail.2; environment can now run under its own
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securelevel.</para>
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<para>The tunable sysctl variables for &man.jail.2; have moved
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from <varname>jail.*</varname> to the
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<varname>security.*</varname> hierarchy. Other security-related
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sysctl variables have moved from <varname>kern.security.*</varname> to
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<varname>security.*</varname>.</para>
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<para>The <varname>kern.maxvnodes</varname> limit now properly
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limits the number of vnodes in use. Previously only vnodes with
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no cached pages could be freed; this could allow the number of
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vnodes to grow without limit on large-memory machines accessing
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many small files. A <literal>vnlru</literal> kernel thread helps
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to flush and reuse vnodes. &merged;</para>
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<para>The kernel message buffer is now accessible by the
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(machine-independent) <varname>kern.msgbuf</varname> sysctl
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variable; &man.dmesg.8; no longer needs to be SGID
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<groupname>kmem</groupname>.</para>
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<para>The &man.kqueue.2; event notification facility was added to
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the &os; kernel. This is a new interface which is able to
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replace &man.poll.2;/&man.select.2;, offering improved performance,
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@ -79,22 +136,54 @@
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Support for monitoring changes in sockets, pipes, fifos, and files
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are present, as well as for signals and processes. &merged;</para>
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<para>Support for USB devices was added to the
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<filename>GENERIC</filename> kernel and to the installation
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programs to support USB devices out of the box. Note that SRM
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does not support USB devices at the moment, so you must still use
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an AT keyboard if you are not using a serial console. &merged;</para>
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<para arch="i386">A new <varname>KVA_SPACE</varname> kernel option
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can be used to reconfigure the size of the kernel virtual address
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space. &merged;</para>
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<para>POSIX.1b Shared Memory Objects are now supported. The
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implementation uses regular files, but automatically enables the
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MAP_NOSYNC flag when they are &man.mmap.2;-ed. &merged;</para>
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<para>The &man.labpc.4; driver has been removed due to
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<quote>bitrot</quote>.</para>
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<para>The &man.agp.4; driver for AGP devices has been added. &merged;</para>
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<para>The loader and kernel linker now look for files named
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<filename>linker.hints</filename> in each directory with KLDs for a
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module name and version to KLD filename mapping. The new
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&man.kldxref.8; utility is used to generate these files.</para>
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<para>Replaced the <literal>PQ_*CACHE</literal> options with a
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single <literal>PQ_CACHESIZE</literal> option to be set to
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the cache size in kilobytes. The old options are still supported
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for backwards compatibility. &merged;</para>
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<para>Linux emulation now supports the kernel functionality
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required by the
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<port>emulators/linux_base-7</port> (RedHat 7.X emulation)
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port. &merged;</para>
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<para>&man.lomac.4;, a Low-Watermark Mandatory Access Control
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security facility, has been added as a kernel module. It provides
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a drop-in security mechanism in addition to the traditional
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UID-based security facilities, requiring no additional
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configuration from the administrator. Work on this feature was
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sponsored by DARPA and NAI Labs.</para>
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<para>The <varname>maxusers</varname> kernel configuration
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parameter is now a boot-time tunable variable. The kernel
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parameters derived from <varname>maxusers</varname> are now also
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tunables and can be overridden at boot-time. The
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<varname>hz</varname> parameter is also now a tunable. &merged;</para>
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<para>Specifying a value of <literal>0</literal> for the
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<varname>maxusers</varname> kernel configuration parameter will
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now cause an appropriate value to be calculated at boot-time
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(between 32 and 512, depending on the amount of memory present).
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This value is now the default for all
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<filename>GENERIC</filename> kernels. &merged;</para>
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<para arch="alpha">A <varname>MAXMEM</varname> kernel option,
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along with the <varname>hw.physmem</varname> environment variable, can be
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used to artificially reduce the memory size of a machine for
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testing (or other purposes). &merged;</para>
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<para>The kernel configuration parameters
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<varname>MAXTSIZ</varname>, <varname>DFLDSIZ</varname>,
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<varname>MAXDSIZ</varname>, <varname>DFLSSIZ</varname>,
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<varname>MAXSSIZ</varname>, and <varname>SGROWSIZ</varname> are
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all loader tunables (<varname>kern.maxtsiz</varname>,
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<varname>kern.maxdfldsiz</varname>, etc.). &merged;</para>
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<para arch="i386">The <literal>NCPU</literal>, <literal>NAPIC</literal>,
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<literal>NBUS</literal>, and <literal>NINTR</literal> kernel
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@ -103,59 +192,33 @@
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and the other, aforementioned options are now
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dynamic. &merged;</para>
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<para>&man.devfs.5;, which allows entries in the
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<filename>/dev</filename> directory to be built automatically and
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supports more flexible attachment of devices, has been largely
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reworked. &man.devfs.5; is now enabled by default and can be
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disabled by the <literal>NODEVFS</literal> kernel option.</para>
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<para>A &man.nmdm.4; null-modem terminal driver has been added.
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&merged;</para>
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<para>Write combining for crashdumps has been implemented. This
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feature is useful when write caching is disabled on both SCSI and
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IDE disks, where large memory dumps could take up to an hour to
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complete. &merged;</para>
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<para>The <literal>O_DIRECT</literal> flag has been added to
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&man.open.2; and &man.fcntl.2;. Specifying this flag for open
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files will attempt to minimize the cache effects of reading and
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writing. &merged;</para>
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<para>Extremely large swap areas (>67 GB) no longer panic the
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system.</para>
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<para arch="i386">The &man.ichsmb.4; driver for the Intel 82801AA
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(ICH) SMBus controller and compatibles has been
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added. &merged;</para>
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<para arch="i386">The &man.uscanner.4; driver for basic USB scanner support
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using SANE has been added. See <ulink
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url="http://www.mostang.com/sane/">the SANE home page</ulink> for
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supported scanners. The HP ScanJet 4100C, 5200C and 6300C are
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known to be working.</para>
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<para arch="i386">The umodem driver for USB modems has been added.
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Support is provided for the 3Com 5605 and Metricom Ricochet GS
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wireless USB modems.</para>
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<para arch="alpha">Support for threads under Linux emulation has been
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added.</para>
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<para>A number of cleanups and enhancements have been applied to
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the PCI subsystem.</para>
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<para arch="i386">The &man.spic.4; driver, which provides access to the jog
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dial device on some Sony laptops, has been added.</para>
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<para>An &man.orm.4; device has been added to claim the option
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ROMs in the ISA memory I/O space, to prevent other drivers from
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mistakenly assigning addresses that conflict with these ROMs. &merged;</para>
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<para arch="i386">PECOFF (Win32 Execution file format) support has been
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added.</para>
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<para>A VESA S3 linear framebuffer driver has been added.</para>
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<para arch="i386">The pmc driver, which supports the power
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management controller of the NEC PC-98NOTE, has been
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added. &merged;</para>
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<para>The <maketarget>buildkernel</maketarget> target now gets the
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name of the configuration(s) to build from the
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<varname>KERNCONF</varname> variable, not
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<varname>KERNEL</varname>. It is no longer required, in some
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cases, for a <maketarget>buildworld</maketarget> to precede a
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<maketarget>buildkernel</maketarget>. (The
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<maketarget>buildworld</maketarget> is still required when
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upgrading across major releases, across
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<application>binutil</application> updates and when &man.config.8;
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changes version.) &merged;
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</para>
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<para>POSIX.1b Shared Memory Objects are now supported. The
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implementation uses regular files, but automatically enables the
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MAP_NOSYNC flag when they are &man.mmap.2;-ed. &merged;</para>
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<para>Replaced the <literal>PQ_*CACHE</literal> options with a
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single <literal>PQ_CACHESIZE</literal> option to be set to
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the cache size in kilobytes. The old options are still supported
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for backwards compatibility. &merged;</para>
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<para>The &man.random.4; device has been rewritten to use the
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<application>Yarrow</application> algorithm. It harvests entropy
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@ -169,38 +232,65 @@
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generates a stream of pseudo-random data and now behaves exactly
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as <filename>/dev/urandom</filename>.</para>
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<para>The &man.syscons.4; driver now supports keyboard-controlled
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pasting, by default bound to
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<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
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<para>The &man.labpc.4; driver has been removed due to
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<quote>bitrot</quote>.</para>
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<para>A new kernel option, <literal>options REGRESSION</literal>,
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enables interfaces and functionality intended for use during
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correctness and regression testing.</para>
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<para arch="i386">The &man.spic.4; driver, which provides access to the jog
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dial device on some Sony laptops, has been added.</para>
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<para>The &man.syscons.4; driver now supports keyboard-controlled
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pasting, by default bound to
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<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
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<para>Support for USB devices was added to the
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<filename>GENERIC</filename> kernel and to the installation
|
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programs to support USB devices out of the box. Note that SRM
|
||||
does not support USB devices at the moment, so you must still use
|
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an AT keyboard if you are not using a serial console. &merged;</para>
|
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|
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<para arch="i386">The umodem driver for USB modems has been added.
|
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Support is provided for the 3Com 5605 and Metricom Ricochet GS
|
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wireless USB modems.</para>
|
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|
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<para arch="i386">The &man.uscanner.4; driver for basic USB scanner support
|
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using SANE has been added. See <ulink
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url="http://www.mostang.com/sane/">the SANE home page</ulink> for
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supported scanners. The HP ScanJet 4100C, 5200C and 6300C are
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known to be working.</para>
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<para>The <literal>USER_LDT</literal> kernel option is now
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activated by default.</para>
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<para>A new &man.ddb.4; command <command>show pcpu</command> lists
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some of the per-CPU data.</para>
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<para>A VESA S3 linear framebuffer driver has been added.</para>
|
||||
|
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<para>A new digi driver has been added to support PCI Xr-based and ISA
|
||||
Xem Digiboard cards. A new &man.digictl.8; program is (mainly) used to
|
||||
re-initialize cards that have external port modules attached such as
|
||||
the PC/Xem.</para>
|
||||
<!-- Above this line, sort kernel changes by manpage/keyword-->
|
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|
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<para>The dgm driver has been removed in favor of the digi driver.</para>
|
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<para>Write combining for crashdumps has been implemented. This
|
||||
feature is useful when write caching is disabled on both SCSI and
|
||||
IDE disks, where large memory dumps could take up to an hour to
|
||||
complete. &merged;</para>
|
||||
|
||||
<para>The <literal>O_DIRECT</literal> flag has been added to
|
||||
&man.open.2; and &man.fcntl.2;. Specifying this flag for open
|
||||
files will attempt to minimize the cache effects of reading and
|
||||
writing. &merged;</para>
|
||||
<para>Extremely large swap areas (>67 GB) no longer panic the
|
||||
system.</para>
|
||||
|
||||
<para>An &man.orm.4; device has been added to claim the option
|
||||
ROMs in the ISA memory I/O space, to prevent other drivers from
|
||||
mistakenly assigning addresses that conflict with these ROMs. &merged;</para>
|
||||
<para arch="alpha">Support for threads under Linux emulation has been
|
||||
added.</para>
|
||||
|
||||
<para>A number of cleanups and enhancements have been applied to
|
||||
the PCI subsystem.</para>
|
||||
|
||||
<para>The <maketarget>buildkernel</maketarget> target now gets the
|
||||
name of the configuration(s) to build from the
|
||||
<varname>KERNCONF</varname> variable, not
|
||||
<varname>KERNEL</varname>. It is no longer required, in some
|
||||
cases, for a <maketarget>buildworld</maketarget> to precede a
|
||||
<maketarget>buildkernel</maketarget>. (The
|
||||
<maketarget>buildworld</maketarget> is still required when
|
||||
upgrading across major releases, across
|
||||
<application>binutil</application> updates and when &man.config.8;
|
||||
changes version.) &merged;
|
||||
</para>
|
||||
|
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<para>The out-of-swap process termination code now begins killing
|
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processes earlier to avoid deadlocks; it now also takes into
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@ -220,42 +310,10 @@
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<option>create</option> option should be used when another device
|
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instance is desired. &merged;</para>
|
||||
|
||||
<para>The kernel message buffer is now accessible by the
|
||||
(machine-independent) <varname>kern.msgbuf</varname> sysctl
|
||||
variable; &man.dmesg.8; no longer needs to be SGID
|
||||
<groupname>kmem</groupname>.</para>
|
||||
|
||||
<para>Two new &man.ddb.4; commands, <command>hwatch</command> and
|
||||
<command>dhwatch</command>, have been introduced. Analogous to
|
||||
<command>watch</command> and <command>dwatch</command>, they install
|
||||
hardware watchpoints (as opposed to software watchpoints) if supported
|
||||
by the architecture. &merged;</para>
|
||||
|
||||
<para>A &man.nmdm.4; null-modem terminal driver has been added.
|
||||
&merged;</para>
|
||||
|
||||
<para>The <varname>maxusers</varname> kernel configuration
|
||||
parameter is now a boot-time tunable variable. The kernel
|
||||
parameters derived from <varname>maxusers</varname> are now also
|
||||
tunables and can be overridden at boot-time. The
|
||||
<varname>hz</varname> parameter is also now a tunable. &merged;</para>
|
||||
|
||||
<para>Specifying a value of <literal>0</literal> for the
|
||||
<varname>maxusers</varname> kernel configuration parameter will
|
||||
now cause an appropriate value to be calculated at boot-time
|
||||
(between 32 and 512, depending on the amount of memory present).
|
||||
This value is now the default for all
|
||||
<filename>GENERIC</filename> kernels. &merged;</para>
|
||||
|
||||
<para>It is now possible to hardwire kernel environment variables (such
|
||||
as tuneables) at compile-time using &man.config.8;'s
|
||||
<literal>ENV</literal> directive.</para>
|
||||
|
||||
<para>The loader and kernel linker now look for files named
|
||||
<filename>linker.hints</filename> in each directory with KLDs for a
|
||||
module name and version to KLD filename mapping. The new
|
||||
&man.kldxref.8; utility is used to generate these files.</para>
|
||||
|
||||
<para>Idle zeroing of pages can be enabled with the
|
||||
<varname>vm.zeroidle_enable</varname> sysctl variable.</para>
|
||||
|
||||
@ -264,30 +322,10 @@
|
||||
utilities such as &man.ps.1; can work with kernels compiled at
|
||||
different addresses. &merged;</para>
|
||||
|
||||
<para arch="i386">A new <varname>KVA_SPACE</varname> kernel option
|
||||
can be used to reconfigure the size of the kernel virtual address
|
||||
space. &merged;</para>
|
||||
|
||||
<para>Coredumps of large processes (or of a large number of
|
||||
processes) no longer lock up the machine for long periods of
|
||||
time. &merged;</para>
|
||||
|
||||
<para>Each &man.jail.2; environment can now run under its own
|
||||
securelevel.</para>
|
||||
|
||||
<para arch="alpha">A <varname>MAXMEM</varname> kernel option,
|
||||
along with the <varname>hw.physmem</varname> environment variable, can be
|
||||
used to artificially reduce the memory size of a machine for
|
||||
testing (or other purposes). &merged;</para>
|
||||
|
||||
<para>An &man.eaccess.2; system call has been added, similar to
|
||||
&man.access.2; except that the former uses effective credentials
|
||||
rather than real credentials.</para>
|
||||
|
||||
<para arch="i386">The &man.amdpm.4; driver has been added to
|
||||
provide access to the system monitoring functions of the AMD 756
|
||||
chipset. &merged;</para>
|
||||
|
||||
<para>The kernel is now aware of the concept that there are
|
||||
smaller units of scheduling than a process (but only one thread
|
||||
per process is allowed at this time).</para>
|
||||
@ -305,26 +343,10 @@
|
||||
booting (instead of the stripped-down kernel used on
|
||||
floppies). &merged;</para>
|
||||
|
||||
<para arch="i386">The pmc driver, which supports the power
|
||||
management controller of the NEC PC-98NOTE, has been
|
||||
added. &merged;</para>
|
||||
|
||||
<para>The kernel configuration parameters
|
||||
<varname>MAXTSIZ</varname>, <varname>DFLDSIZ</varname>,
|
||||
<varname>MAXDSIZ</varname>, <varname>DFLSSIZ</varname>,
|
||||
<varname>MAXSSIZ</varname>, and <varname>SGROWSIZ</varname> are
|
||||
all loader tunables (<varname>kern.maxtsiz</varname>,
|
||||
<varname>kern.maxdfldsiz</varname>, etc.). &merged;</para>
|
||||
|
||||
<para>The system load average computation now adds some jitter to
|
||||
the timing of samples, in order to avoid synchronization with
|
||||
processes that run periodically. &merged;</para>
|
||||
|
||||
<para>Linux emulation now supports the kernel functionality
|
||||
required by the
|
||||
<port>emulators/linux_base-7</port> (RedHat 7.X emulation)
|
||||
port. &merged;</para>
|
||||
|
||||
<para>If a debugging kernel with modules is being built
|
||||
(i.e. using <literal>makeoptions DEBUG=-g</literal>), the modules
|
||||
will now be built with debugging support as well, for
|
||||
@ -332,26 +354,6 @@
|
||||
and installed with debugging kernels will now occupy more space on
|
||||
disk than they did previously. &merged;</para>
|
||||
|
||||
<para>&man.lomac.4;, a Low-Watermark Mandatory Access Control
|
||||
security facility, has been added as a kernel module. It provides
|
||||
a drop-in security mechanism in addition to the traditional
|
||||
UID-based security facilities, requiring no additional
|
||||
configuration from the administrator. Work on this feature was
|
||||
sponsored by DARPA and NAI Labs.</para>
|
||||
|
||||
<para>The tunable sysctl variables for &man.jail.2; have moved
|
||||
from <varname>jail.*</varname> to the
|
||||
<varname>security.*</varname> hierarchy. Other security-related
|
||||
sysctl variables have moved from <varname>kern.security.*</varname> to
|
||||
<varname>security.*</varname>.</para>
|
||||
|
||||
<para>The <varname>kern.maxvnodes</varname> limit now properly
|
||||
limits the number of vnodes in use. Previously only vnodes with
|
||||
no cached pages could be freed; this could allow the number of
|
||||
vnodes to grow without limit on large-memory machines accessing
|
||||
many small files. A <literal>vnlru</literal> kernel thread helps
|
||||
to flush and reuse vnodes. &merged;</para>
|
||||
|
||||
<sect3>
|
||||
<title>Processor/Motherboard Support</title>
|
||||
|
||||
|
||||
@ -72,6 +72,63 @@
|
||||
<sect2 id="kernel">
|
||||
<title>Kernel Changes</title>
|
||||
|
||||
<para arch="i386">The &man.amdpm.4; driver has been added to
|
||||
provide access to the system monitoring functions of the AMD 756
|
||||
chipset. &merged;</para>
|
||||
|
||||
<para>The &man.agp.4; driver for AGP devices has been added. &merged;</para>
|
||||
|
||||
<para>A new &man.ddb.4; command <command>show pcpu</command> lists
|
||||
some of the per-CPU data.</para>
|
||||
|
||||
<para>Two new &man.ddb.4; commands, <command>hwatch</command> and
|
||||
<command>dhwatch</command>, have been introduced. Analogous to
|
||||
<command>watch</command> and <command>dwatch</command>, they install
|
||||
hardware watchpoints (as opposed to software watchpoints) if supported
|
||||
by the architecture. &merged;</para>
|
||||
|
||||
<para>&man.devfs.5;, which allows entries in the
|
||||
<filename>/dev</filename> directory to be built automatically and
|
||||
supports more flexible attachment of devices, has been largely
|
||||
reworked. &man.devfs.5; is now enabled by default and can be
|
||||
disabled by the <literal>NODEVFS</literal> kernel option.</para>
|
||||
|
||||
<para>The dgm driver has been removed in favor of the digi driver.</para>
|
||||
|
||||
<para>A new digi driver has been added to support PCI Xr-based and ISA
|
||||
Xem Digiboard cards. A new &man.digictl.8; program is (mainly) used to
|
||||
re-initialize cards that have external port modules attached such as
|
||||
the PC/Xem.</para>
|
||||
|
||||
<para>An &man.eaccess.2; system call has been added, similar to
|
||||
&man.access.2; except that the former uses effective credentials
|
||||
rather than real credentials.</para>
|
||||
|
||||
<para arch="i386">The &man.ichsmb.4; driver for the Intel 82801AA
|
||||
(ICH) SMBus controller and compatibles has been
|
||||
added. &merged;</para>
|
||||
|
||||
<para>Each &man.jail.2; environment can now run under its own
|
||||
securelevel.</para>
|
||||
|
||||
<para>The tunable sysctl variables for &man.jail.2; have moved
|
||||
from <varname>jail.*</varname> to the
|
||||
<varname>security.*</varname> hierarchy. Other security-related
|
||||
sysctl variables have moved from <varname>kern.security.*</varname> to
|
||||
<varname>security.*</varname>.</para>
|
||||
|
||||
<para>The <varname>kern.maxvnodes</varname> limit now properly
|
||||
limits the number of vnodes in use. Previously only vnodes with
|
||||
no cached pages could be freed; this could allow the number of
|
||||
vnodes to grow without limit on large-memory machines accessing
|
||||
many small files. A <literal>vnlru</literal> kernel thread helps
|
||||
to flush and reuse vnodes. &merged;</para>
|
||||
|
||||
<para>The kernel message buffer is now accessible by the
|
||||
(machine-independent) <varname>kern.msgbuf</varname> sysctl
|
||||
variable; &man.dmesg.8; no longer needs to be SGID
|
||||
<groupname>kmem</groupname>.</para>
|
||||
|
||||
<para>The &man.kqueue.2; event notification facility was added to
|
||||
the &os; kernel. This is a new interface which is able to
|
||||
replace &man.poll.2;/&man.select.2;, offering improved performance,
|
||||
@ -79,22 +136,54 @@
|
||||
Support for monitoring changes in sockets, pipes, fifos, and files
|
||||
are present, as well as for signals and processes. &merged;</para>
|
||||
|
||||
<para>Support for USB devices was added to the
|
||||
<filename>GENERIC</filename> kernel and to the installation
|
||||
programs to support USB devices out of the box. Note that SRM
|
||||
does not support USB devices at the moment, so you must still use
|
||||
an AT keyboard if you are not using a serial console. &merged;</para>
|
||||
<para arch="i386">A new <varname>KVA_SPACE</varname> kernel option
|
||||
can be used to reconfigure the size of the kernel virtual address
|
||||
space. &merged;</para>
|
||||
|
||||
<para>POSIX.1b Shared Memory Objects are now supported. The
|
||||
implementation uses regular files, but automatically enables the
|
||||
MAP_NOSYNC flag when they are &man.mmap.2;-ed. &merged;</para>
|
||||
<para>The &man.labpc.4; driver has been removed due to
|
||||
<quote>bitrot</quote>.</para>
|
||||
|
||||
<para>The &man.agp.4; driver for AGP devices has been added. &merged;</para>
|
||||
<para>The loader and kernel linker now look for files named
|
||||
<filename>linker.hints</filename> in each directory with KLDs for a
|
||||
module name and version to KLD filename mapping. The new
|
||||
&man.kldxref.8; utility is used to generate these files.</para>
|
||||
|
||||
<para>Replaced the <literal>PQ_*CACHE</literal> options with a
|
||||
single <literal>PQ_CACHESIZE</literal> option to be set to
|
||||
the cache size in kilobytes. The old options are still supported
|
||||
for backwards compatibility. &merged;</para>
|
||||
<para>Linux emulation now supports the kernel functionality
|
||||
required by the
|
||||
<port>emulators/linux_base-7</port> (RedHat 7.X emulation)
|
||||
port. &merged;</para>
|
||||
|
||||
<para>&man.lomac.4;, a Low-Watermark Mandatory Access Control
|
||||
security facility, has been added as a kernel module. It provides
|
||||
a drop-in security mechanism in addition to the traditional
|
||||
UID-based security facilities, requiring no additional
|
||||
configuration from the administrator. Work on this feature was
|
||||
sponsored by DARPA and NAI Labs.</para>
|
||||
|
||||
<para>The <varname>maxusers</varname> kernel configuration
|
||||
parameter is now a boot-time tunable variable. The kernel
|
||||
parameters derived from <varname>maxusers</varname> are now also
|
||||
tunables and can be overridden at boot-time. The
|
||||
<varname>hz</varname> parameter is also now a tunable. &merged;</para>
|
||||
|
||||
<para>Specifying a value of <literal>0</literal> for the
|
||||
<varname>maxusers</varname> kernel configuration parameter will
|
||||
now cause an appropriate value to be calculated at boot-time
|
||||
(between 32 and 512, depending on the amount of memory present).
|
||||
This value is now the default for all
|
||||
<filename>GENERIC</filename> kernels. &merged;</para>
|
||||
|
||||
<para arch="alpha">A <varname>MAXMEM</varname> kernel option,
|
||||
along with the <varname>hw.physmem</varname> environment variable, can be
|
||||
used to artificially reduce the memory size of a machine for
|
||||
testing (or other purposes). &merged;</para>
|
||||
|
||||
<para>The kernel configuration parameters
|
||||
<varname>MAXTSIZ</varname>, <varname>DFLDSIZ</varname>,
|
||||
<varname>MAXDSIZ</varname>, <varname>DFLSSIZ</varname>,
|
||||
<varname>MAXSSIZ</varname>, and <varname>SGROWSIZ</varname> are
|
||||
all loader tunables (<varname>kern.maxtsiz</varname>,
|
||||
<varname>kern.maxdfldsiz</varname>, etc.). &merged;</para>
|
||||
|
||||
<para arch="i386">The <literal>NCPU</literal>, <literal>NAPIC</literal>,
|
||||
<literal>NBUS</literal>, and <literal>NINTR</literal> kernel
|
||||
@ -103,59 +192,33 @@
|
||||
and the other, aforementioned options are now
|
||||
dynamic. &merged;</para>
|
||||
|
||||
<para>&man.devfs.5;, which allows entries in the
|
||||
<filename>/dev</filename> directory to be built automatically and
|
||||
supports more flexible attachment of devices, has been largely
|
||||
reworked. &man.devfs.5; is now enabled by default and can be
|
||||
disabled by the <literal>NODEVFS</literal> kernel option.</para>
|
||||
<para>A &man.nmdm.4; null-modem terminal driver has been added.
|
||||
&merged;</para>
|
||||
|
||||
<para>Write combining for crashdumps has been implemented. This
|
||||
feature is useful when write caching is disabled on both SCSI and
|
||||
IDE disks, where large memory dumps could take up to an hour to
|
||||
complete. &merged;</para>
|
||||
<para>The <literal>O_DIRECT</literal> flag has been added to
|
||||
&man.open.2; and &man.fcntl.2;. Specifying this flag for open
|
||||
files will attempt to minimize the cache effects of reading and
|
||||
writing. &merged;</para>
|
||||
|
||||
<para>Extremely large swap areas (>67 GB) no longer panic the
|
||||
system.</para>
|
||||
|
||||
<para arch="i386">The &man.ichsmb.4; driver for the Intel 82801AA
|
||||
(ICH) SMBus controller and compatibles has been
|
||||
added. &merged;</para>
|
||||
|
||||
<para arch="i386">The &man.uscanner.4; driver for basic USB scanner support
|
||||
using SANE has been added. See <ulink
|
||||
url="http://www.mostang.com/sane/">the SANE home page</ulink> for
|
||||
supported scanners. The HP ScanJet 4100C, 5200C and 6300C are
|
||||
known to be working.</para>
|
||||
|
||||
<para arch="i386">The umodem driver for USB modems has been added.
|
||||
Support is provided for the 3Com 5605 and Metricom Ricochet GS
|
||||
wireless USB modems.</para>
|
||||
|
||||
<para arch="alpha">Support for threads under Linux emulation has been
|
||||
added.</para>
|
||||
|
||||
<para>A number of cleanups and enhancements have been applied to
|
||||
the PCI subsystem.</para>
|
||||
|
||||
<para arch="i386">The &man.spic.4; driver, which provides access to the jog
|
||||
dial device on some Sony laptops, has been added.</para>
|
||||
<para>An &man.orm.4; device has been added to claim the option
|
||||
ROMs in the ISA memory I/O space, to prevent other drivers from
|
||||
mistakenly assigning addresses that conflict with these ROMs. &merged;</para>
|
||||
|
||||
<para arch="i386">PECOFF (Win32 Execution file format) support has been
|
||||
added.</para>
|
||||
|
||||
<para>A VESA S3 linear framebuffer driver has been added.</para>
|
||||
<para arch="i386">The pmc driver, which supports the power
|
||||
management controller of the NEC PC-98NOTE, has been
|
||||
added. &merged;</para>
|
||||
|
||||
<para>The <maketarget>buildkernel</maketarget> target now gets the
|
||||
name of the configuration(s) to build from the
|
||||
<varname>KERNCONF</varname> variable, not
|
||||
<varname>KERNEL</varname>. It is no longer required, in some
|
||||
cases, for a <maketarget>buildworld</maketarget> to precede a
|
||||
<maketarget>buildkernel</maketarget>. (The
|
||||
<maketarget>buildworld</maketarget> is still required when
|
||||
upgrading across major releases, across
|
||||
<application>binutil</application> updates and when &man.config.8;
|
||||
changes version.) &merged;
|
||||
</para>
|
||||
<para>POSIX.1b Shared Memory Objects are now supported. The
|
||||
implementation uses regular files, but automatically enables the
|
||||
MAP_NOSYNC flag when they are &man.mmap.2;-ed. &merged;</para>
|
||||
|
||||
<para>Replaced the <literal>PQ_*CACHE</literal> options with a
|
||||
single <literal>PQ_CACHESIZE</literal> option to be set to
|
||||
the cache size in kilobytes. The old options are still supported
|
||||
for backwards compatibility. &merged;</para>
|
||||
|
||||
<para>The &man.random.4; device has been rewritten to use the
|
||||
<application>Yarrow</application> algorithm. It harvests entropy
|
||||
@ -169,38 +232,65 @@
|
||||
generates a stream of pseudo-random data and now behaves exactly
|
||||
as <filename>/dev/urandom</filename>.</para>
|
||||
|
||||
<para>The &man.syscons.4; driver now supports keyboard-controlled
|
||||
pasting, by default bound to
|
||||
<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
|
||||
|
||||
<para>The &man.labpc.4; driver has been removed due to
|
||||
<quote>bitrot</quote>.</para>
|
||||
|
||||
<para>A new kernel option, <literal>options REGRESSION</literal>,
|
||||
enables interfaces and functionality intended for use during
|
||||
correctness and regression testing.</para>
|
||||
|
||||
<para arch="i386">The &man.spic.4; driver, which provides access to the jog
|
||||
dial device on some Sony laptops, has been added.</para>
|
||||
|
||||
<para>The &man.syscons.4; driver now supports keyboard-controlled
|
||||
pasting, by default bound to
|
||||
<keycap>Shift</keycap>-<keycap>Insert</keycap>.</para>
|
||||
|
||||
<para>Support for USB devices was added to the
|
||||
<filename>GENERIC</filename> kernel and to the installation
|
||||
programs to support USB devices out of the box. Note that SRM
|
||||
does not support USB devices at the moment, so you must still use
|
||||
an AT keyboard if you are not using a serial console. &merged;</para>
|
||||
|
||||
<para arch="i386">The umodem driver for USB modems has been added.
|
||||
Support is provided for the 3Com 5605 and Metricom Ricochet GS
|
||||
wireless USB modems.</para>
|
||||
|
||||
<para arch="i386">The &man.uscanner.4; driver for basic USB scanner support
|
||||
using SANE has been added. See <ulink
|
||||
url="http://www.mostang.com/sane/">the SANE home page</ulink> for
|
||||
supported scanners. The HP ScanJet 4100C, 5200C and 6300C are
|
||||
known to be working.</para>
|
||||
|
||||
<para>The <literal>USER_LDT</literal> kernel option is now
|
||||
activated by default.</para>
|
||||
|
||||
<para>A new &man.ddb.4; command <command>show pcpu</command> lists
|
||||
some of the per-CPU data.</para>
|
||||
<para>A VESA S3 linear framebuffer driver has been added.</para>
|
||||
|
||||
<para>A new digi driver has been added to support PCI Xr-based and ISA
|
||||
Xem Digiboard cards. A new &man.digictl.8; program is (mainly) used to
|
||||
re-initialize cards that have external port modules attached such as
|
||||
the PC/Xem.</para>
|
||||
<!-- Above this line, sort kernel changes by manpage/keyword-->
|
||||
|
||||
<para>The dgm driver has been removed in favor of the digi driver.</para>
|
||||
<para>Write combining for crashdumps has been implemented. This
|
||||
feature is useful when write caching is disabled on both SCSI and
|
||||
IDE disks, where large memory dumps could take up to an hour to
|
||||
complete. &merged;</para>
|
||||
|
||||
<para>The <literal>O_DIRECT</literal> flag has been added to
|
||||
&man.open.2; and &man.fcntl.2;. Specifying this flag for open
|
||||
files will attempt to minimize the cache effects of reading and
|
||||
writing. &merged;</para>
|
||||
<para>Extremely large swap areas (>67 GB) no longer panic the
|
||||
system.</para>
|
||||
|
||||
<para>An &man.orm.4; device has been added to claim the option
|
||||
ROMs in the ISA memory I/O space, to prevent other drivers from
|
||||
mistakenly assigning addresses that conflict with these ROMs. &merged;</para>
|
||||
<para arch="alpha">Support for threads under Linux emulation has been
|
||||
added.</para>
|
||||
|
||||
<para>A number of cleanups and enhancements have been applied to
|
||||
the PCI subsystem.</para>
|
||||
|
||||
<para>The <maketarget>buildkernel</maketarget> target now gets the
|
||||
name of the configuration(s) to build from the
|
||||
<varname>KERNCONF</varname> variable, not
|
||||
<varname>KERNEL</varname>. It is no longer required, in some
|
||||
cases, for a <maketarget>buildworld</maketarget> to precede a
|
||||
<maketarget>buildkernel</maketarget>. (The
|
||||
<maketarget>buildworld</maketarget> is still required when
|
||||
upgrading across major releases, across
|
||||
<application>binutil</application> updates and when &man.config.8;
|
||||
changes version.) &merged;
|
||||
</para>
|
||||
|
||||
<para>The out-of-swap process termination code now begins killing
|
||||
processes earlier to avoid deadlocks; it now also takes into
|
||||
@ -220,42 +310,10 @@
|
||||
<option>create</option> option should be used when another device
|
||||
instance is desired. &merged;</para>
|
||||
|
||||
<para>The kernel message buffer is now accessible by the
|
||||
(machine-independent) <varname>kern.msgbuf</varname> sysctl
|
||||
variable; &man.dmesg.8; no longer needs to be SGID
|
||||
<groupname>kmem</groupname>.</para>
|
||||
|
||||
<para>Two new &man.ddb.4; commands, <command>hwatch</command> and
|
||||
<command>dhwatch</command>, have been introduced. Analogous to
|
||||
<command>watch</command> and <command>dwatch</command>, they install
|
||||
hardware watchpoints (as opposed to software watchpoints) if supported
|
||||
by the architecture. &merged;</para>
|
||||
|
||||
<para>A &man.nmdm.4; null-modem terminal driver has been added.
|
||||
&merged;</para>
|
||||
|
||||
<para>The <varname>maxusers</varname> kernel configuration
|
||||
parameter is now a boot-time tunable variable. The kernel
|
||||
parameters derived from <varname>maxusers</varname> are now also
|
||||
tunables and can be overridden at boot-time. The
|
||||
<varname>hz</varname> parameter is also now a tunable. &merged;</para>
|
||||
|
||||
<para>Specifying a value of <literal>0</literal> for the
|
||||
<varname>maxusers</varname> kernel configuration parameter will
|
||||
now cause an appropriate value to be calculated at boot-time
|
||||
(between 32 and 512, depending on the amount of memory present).
|
||||
This value is now the default for all
|
||||
<filename>GENERIC</filename> kernels. &merged;</para>
|
||||
|
||||
<para>It is now possible to hardwire kernel environment variables (such
|
||||
as tuneables) at compile-time using &man.config.8;'s
|
||||
<literal>ENV</literal> directive.</para>
|
||||
|
||||
<para>The loader and kernel linker now look for files named
|
||||
<filename>linker.hints</filename> in each directory with KLDs for a
|
||||
module name and version to KLD filename mapping. The new
|
||||
&man.kldxref.8; utility is used to generate these files.</para>
|
||||
|
||||
<para>Idle zeroing of pages can be enabled with the
|
||||
<varname>vm.zeroidle_enable</varname> sysctl variable.</para>
|
||||
|
||||
@ -264,30 +322,10 @@
|
||||
utilities such as &man.ps.1; can work with kernels compiled at
|
||||
different addresses. &merged;</para>
|
||||
|
||||
<para arch="i386">A new <varname>KVA_SPACE</varname> kernel option
|
||||
can be used to reconfigure the size of the kernel virtual address
|
||||
space. &merged;</para>
|
||||
|
||||
<para>Coredumps of large processes (or of a large number of
|
||||
processes) no longer lock up the machine for long periods of
|
||||
time. &merged;</para>
|
||||
|
||||
<para>Each &man.jail.2; environment can now run under its own
|
||||
securelevel.</para>
|
||||
|
||||
<para arch="alpha">A <varname>MAXMEM</varname> kernel option,
|
||||
along with the <varname>hw.physmem</varname> environment variable, can be
|
||||
used to artificially reduce the memory size of a machine for
|
||||
testing (or other purposes). &merged;</para>
|
||||
|
||||
<para>An &man.eaccess.2; system call has been added, similar to
|
||||
&man.access.2; except that the former uses effective credentials
|
||||
rather than real credentials.</para>
|
||||
|
||||
<para arch="i386">The &man.amdpm.4; driver has been added to
|
||||
provide access to the system monitoring functions of the AMD 756
|
||||
chipset. &merged;</para>
|
||||
|
||||
<para>The kernel is now aware of the concept that there are
|
||||
smaller units of scheduling than a process (but only one thread
|
||||
per process is allowed at this time).</para>
|
||||
@ -305,26 +343,10 @@
|
||||
booting (instead of the stripped-down kernel used on
|
||||
floppies). &merged;</para>
|
||||
|
||||
<para arch="i386">The pmc driver, which supports the power
|
||||
management controller of the NEC PC-98NOTE, has been
|
||||
added. &merged;</para>
|
||||
|
||||
<para>The kernel configuration parameters
|
||||
<varname>MAXTSIZ</varname>, <varname>DFLDSIZ</varname>,
|
||||
<varname>MAXDSIZ</varname>, <varname>DFLSSIZ</varname>,
|
||||
<varname>MAXSSIZ</varname>, and <varname>SGROWSIZ</varname> are
|
||||
all loader tunables (<varname>kern.maxtsiz</varname>,
|
||||
<varname>kern.maxdfldsiz</varname>, etc.). &merged;</para>
|
||||
|
||||
<para>The system load average computation now adds some jitter to
|
||||
the timing of samples, in order to avoid synchronization with
|
||||
processes that run periodically. &merged;</para>
|
||||
|
||||
<para>Linux emulation now supports the kernel functionality
|
||||
required by the
|
||||
<port>emulators/linux_base-7</port> (RedHat 7.X emulation)
|
||||
port. &merged;</para>
|
||||
|
||||
<para>If a debugging kernel with modules is being built
|
||||
(i.e. using <literal>makeoptions DEBUG=-g</literal>), the modules
|
||||
will now be built with debugging support as well, for
|
||||
@ -332,26 +354,6 @@
|
||||
and installed with debugging kernels will now occupy more space on
|
||||
disk than they did previously. &merged;</para>
|
||||
|
||||
<para>&man.lomac.4;, a Low-Watermark Mandatory Access Control
|
||||
security facility, has been added as a kernel module. It provides
|
||||
a drop-in security mechanism in addition to the traditional
|
||||
UID-based security facilities, requiring no additional
|
||||
configuration from the administrator. Work on this feature was
|
||||
sponsored by DARPA and NAI Labs.</para>
|
||||
|
||||
<para>The tunable sysctl variables for &man.jail.2; have moved
|
||||
from <varname>jail.*</varname> to the
|
||||
<varname>security.*</varname> hierarchy. Other security-related
|
||||
sysctl variables have moved from <varname>kern.security.*</varname> to
|
||||
<varname>security.*</varname>.</para>
|
||||
|
||||
<para>The <varname>kern.maxvnodes</varname> limit now properly
|
||||
limits the number of vnodes in use. Previously only vnodes with
|
||||
no cached pages could be freed; this could allow the number of
|
||||
vnodes to grow without limit on large-memory machines accessing
|
||||
many small files. A <literal>vnlru</literal> kernel thread helps
|
||||
to flush and reuse vnodes. &merged;</para>
|
||||
|
||||
<sect3>
|
||||
<title>Processor/Motherboard Support</title>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user