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Marius Strobl 33d3fffa90 Add ABI backwards compatibility to the FreeBSD 4/5/6 versions of 
the PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was broken
with the introduction of PCI domain support.
As the size of struct pci_conf_io wasn't changed with that commit,
this unfortunately requires the ABI of PCIOCGETCONF to be broken
again in order to be able to provide backwards compatibility to
the old version of that IOCTL.

Requested by:	imp
Discussed with:	re (kensmith)
Reviewed by:	PCI maintainers (imp, jhb)
MFC after:	5 days
2007-10-24 20:51:44 +00:00

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Updating Information for FreeBSD current users
This file is maintained and copyrighted by M. Warner Losh
<imp@village.org>. See end of file for further details. For commonly
done items, please see the COMMON ITEMS: section later in the file.
Items affecting the ports and packages system can be found in
/usr/ports/UPDATING. Please read that file before running
portupgrade.
NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS SLOW:
FreeBSD 8.x has many debugging features turned on, in
both the kernel and userland. These features attempt to detect
incorrect use of system primitives, and encourage loud failure
through extra sanity checking and fail stop semantics. They
also substantially impact system performance. If you want to
do performance measurement, benchmarking, and optimization,
you'll want to turn them off. This includes various WITNESS-
related kernel options, INVARIANTS, malloc debugging flags
in userland, and various verbose features in the kernel. Many
developers choose to disable these features on build machines
to maximize performance.
20071024:
It has been decided that it is desirable to provide ABI
backwards compatibility to the FreeBSD 4/5/6 versions of the
PCIOCGETCONF, PCIOCREAD and PCIOCWRITE IOCTLs, which was
broken with the introduction of PCI domain support (see the
20070930 entry). Unfortunately, this required the ABI of
PCIOCGETCONF to be broken again in order to be able to
provide backwards compatibility to the old version of that
IOCTL. Thus consumers of PCIOCGETCONF have to be recompiled
again. As for prominent ports this affects neither pciutils
nor xorg-server this time, the hal port needs to be rebuilt
however.
20071020:
The misnamed kthread_create() and friends have been renamed
to kproc_create() etc. Many of the callers already
used kproc_start()..
I will return kthread_create() and friends in a while
with implementations that actually create threads, not procs.
Renaming corresponds with version 800002.
20071010:
RELENG_7 branched.
20071009:
Setting WITHOUT_LIBPTHREAD now means WITHOUT_LIBKSE and
WITHOUT_LIBTHR are set.
20070930:
The PCI code has been made aware of PCI domains. This means that
the location strings as used by pciconf(8) etc are now in the
following format: pci<domain>:<bus>:<device>[:<function>]. It
also means that consumers of <sys/pciio.h> potentially need to
be recompiled; this includes the hal and xorg-server ports.
20070928:
The caching daemon (cached) was renamed to nscd. nscd.conf
configuration file should be used instead of cached.conf and
nscd_enable, nscd_pidfile and nscd_flags options should be used
instead of cached_enable, cached_pidfile and cached_flags in
rc.conf.
20070921:
The getfacl(1) utility now prints owning user and group name
instead of owning uid and gid in the three line comment header.
This is the same behavior as getfacl(1) on Solaris and Linux.
20070704:
The new IPsec code is now compiled in using the IPSEC option. The
IPSEC option now requires "device crypto" be defined in your kernel
configuration. The FAST_IPSEC kernel option is now deprecated.
20070702:
The packet filter (pf) code has been updated to OpenBSD 4.1 Please
note the changed syntax - keep state is now on by default. Also
note the fact that ftp-proxy(8) has been changed from bottom up and
has been moved from libexec to usr/sbin. Changes in the ALTQ
handling also affect users of IPFW's ALTQ capabilities.
20070701:
Remove KAME IPsec in favor of FAST_IPSEC, which is now the
only IPsec supported by FreeBSD. The new IPsec stack
supports both IPv4 and IPv6. The kernel option will change
after the code changes have settled in. For now the kernel
option IPSEC is deprecated and FAST_IPSEC is the only option, that
will change after some settling time.
20070701:
The wicontrol(8) utility has been removed from the base system. wi(4)
cards should be configured using ifconfig(8), see the man page for more
information.
20070612:
The i386/amd64 GENERIC kernel now defaults to the nfe(4) driver
instead of the nve(4) driver. Please update your configuration
accordingly.
20070612:
By default, /etc/rc.d/sendmail no longer rebuilds the aliases
database if it is missing or older than the aliases file. If
desired, set the new rc.conf option sendmail_rebuild_aliases
to "YES" to restore that functionality.
20070612:
The IPv4 multicast socket code has been considerably modified, and
moved to the file sys/netinet/in_mcast.c. Initial support for the
RFC 3678 Source-Specific Multicast Socket API has been added to
the IPv4 network stack.
Strict multicast and broadcast reception is now the default for
UDP/IPv4 sockets; the net.inet.udp.strict_mcast_mship sysctl variable
has now been removed.
The RFC 1724 hack for interface selection has been removed; the use
of the Linux-derived ip_mreqn structure with IP_MULTICAST_IF has
been added to replace it. Consumers such as routed will soon be
updated to reflect this.
These changes affect users who are running routed(8) or rdisc(8)
from the FreeBSD base system on point-to-point or unnumbered
interfaces.
20070610:
The net80211 layer has changed significantly and all wireless
drivers that depend on it need to be recompiled. Further these
changes require that any program that interacts with the wireless
support in the kernel be recompiled; this includes: ifconfig,
wpa_supplicant, hostapd, and wlanstats. Users must also, for
the moment, kldload the wlan_scan_sta and/or wlan_scan_ap modules
if they use modules for wireless support. These modules implement
scanning support for station and ap modes, respectively. Failure
to load the appropriate module before marking a wireless interface
up will result in a message to the console and the device not
operating properly.
20070610:
The pam_nologin(8) module ceases to provide an authentication
function and starts providing an account management function.
Consequent changes to /etc/pam.d should be brought in using
mergemaster(8). Third-party files in /usr/local/etc/pam.d may
need manual editing as follows. Locate this line (or similar):
auth required pam_nologin.so no_warn
and change it according to this example:
account required pam_nologin.so no_warn
That is, the first word needs to be changed from "auth" to
"account". The new line can be moved to the account section
within the file for clarity. Not updating pam.conf(5) files
will result in nologin(5) ignored by the respective services.
20070529:
The ether_ioctl() function has been synchronized with ioctl(2)
and ifnet.if_ioctl. Due to that, the size of one of its arguments
has changed on 64-bit architectures. All kernel modules using
ether_ioctl() need to be rebuilt on such architectures.
20070516:
Improved INCLUDE_CONFIG_FILE support has been introduced to the
config(8) utility. In order to take advantage of this new
functionality, you are expected to recompile and install
src/usr.sbin/config. If you don't rebuild config(8), and your
kernel configuration depends on INCLUDE_CONFIG_FILE, the kernel
build will be broken because of a missing "kernconfstring"
symbol.
20070513:
Symbol versioning is enabled by default. To disable it, use
option WITHOUT_SYMVER. It is not advisable to attempt to
disable symbol versioning once it is enabled; your installworld
will break because a symbol version-less libc will get installed
before the install tools. As a result, the old install tools,
which previously had symbol dependencies to FBSD_1.0, will fail
because the freshly installed libc will not have them.
The default threading library (providing "libpthread") has been
changed to libthr. If you wish to have libkse as your default,
use option DEFAULT_THREAD_LIB=libkse for the buildworld.
20070423:
The ABI breakage in sendmail(8)'s libmilter has been repaired
so it is no longer necessary to recompile mail filters (aka,
milters). If you recompiled mail filters after the 20070408
note, it is not necessary to recompile them again.
20070417:
The new trunk(4) driver has been renamed to lagg(4) as it better
reflects its purpose. ifconfig will need to be recompiled.
20070408:
sendmail(8) has been updated to version 8.14.1. Mail filters
(aka, milters) compiled against the libmilter included in the
base operating system should be recompiled.
20070302:
Firmwares for ipw(4) and iwi(4) are now included in the base tree.
In order to use them one must agree to the respective LICENSE in
share/doc/legal and define legal.intel_<name>.license_ack=1 via
loader.conf(5) or kenv(1). Make sure to deinstall the now
deprecated modules from the respective firmware ports.
20070228:
The name resolution/mapping functions addr2ascii(3) and ascii2addr(3)
were removed from FreeBSD's libc. These originally came from INRIA
IPv6. Nothing in FreeBSD ever used them. They may be regarded as
deprecated in previous releases.
The AF_LINK support for getnameinfo(3) was merged from NetBSD to
replace it as a more portable (and re-entrant) API.
20070224:
To support interrupt filtering a modification to the newbus API
has occurred, ABI was broken and __FreeBSD_version was bumped
to 700031. Please make sure that your kernel and modules are in
sync. For more info:
http://docs.freebsd.org/cgi/mid.cgi?20070221233124.GA13941
20070224:
The IPv6 multicast forwarding code may now be loaded into GENERIC
kernels by loading the ip_mroute.ko module. This is built into the
module unless WITHOUT_INET6 or WITHOUT_INET6_SUPPORT options are
set; see src.conf(5) for more information.
20070214:
The output of netstat -r has changed. Without -n, we now only
print a "network name" without the prefix length if the network
address and mask exactly match a Class A/B/C network, and an entry
exists in the nsswitch "networks" map.
With -n, we print the full unabbreviated CIDR network prefix in
the form "a.b.c.d/p". 0.0.0.0/0 is always printed as "default".
This change is in preparation for changes such as equal-cost
multipath, and to more generally assist operational deployment
of FreeBSD as a modern IPv4 router.
20070210:
PIM has been turned on by default in the IPv4 multicast
routing code. The kernel option 'PIM' has now been removed.
PIM is now built by default if option 'MROUTING' is specified.
It may now be loaded into GENERIC kernels by loading the
ip_mroute.ko module.
20070207:
Support for IPIP tunnels (VIFF_TUNNEL) in IPv4 multicast routing
has been removed. Its functionality may be achieved by explicitly
configuring gif(4) interfaces and using the 'phyint' keyword in
mrouted.conf.
XORP does not support source-routed IPv4 multicast tunnels nor the
integrated IPIP tunneling, therefore it is not affected by this
change. The __FreeBSD_version macro has been bumped to 700030.
20061221:
Support for PCI Message Signalled Interrupts has been
re-enabled in the bge driver, only for those chips which are
believed to support it properly. If there are any problems,
MSI can be disabled completely by setting the
'hw.pci.enable_msi' and 'hw.pci.enable_msix' tunables to 0
in the loader.
20061214:
Support for PCI Message Signalled Interrupts has been
disabled again in the bge driver. Many revisions of the
hardware fail to support it properly. Support can be
re-enabled by removing the #define of BGE_DISABLE_MSI in
"src/sys/dev/bge/if_bge.c".
20061214:
Support for PCI Message Signalled Interrupts has been added
to the bge driver. If there are any problems, MSI can be
disabled completely by setting the 'hw.pci.enable_msi' and
'hw.pci.enable_msix' tunables to 0 in the loader.
20061205:
The removal of several facets of the experimental Threading
system from the kernel means that the proc and thread structures
have changed quite a bit. I suggest all kernel modules that might
reference these structures be recompiled.. Especially the
linux module.
20061126:
Sound infrastructure has been updated with various fixes and
improvements. Most of the changes are pretty much transparent,
with exceptions of followings:
1) All sound driver specific sysctls (hw.snd.pcm%d.*) have been
moved to their own dev sysctl nodes, for example:
hw.snd.pcm0.vchans -> dev.pcm.0.vchans
2) /dev/dspr%d.%d has been deprecated. Each channel now has its
own chardev in the form of "dsp%d.<function>%d", where <function>
is p = playback, r = record and v = virtual, respectively. Users
are encouraged to use these devs instead of (old) "/dev/dsp%d.%d".
This does not affect those who are using "/dev/dsp".
20061122:
The following binaries have been disconnected from the build:
mount_devfs, mount_ext2fs, mount_fdescfs, mount_procfs, mount_linprocfs,
and mount_std. The functionality of these programs has been
moved into the mount program. For example, to mount a devfs
filesystem, instead of using mount_devfs, use: "mount -t devfs".
This does not affect entries in /etc/fstab, since entries in
/etc/fstab are always processed with "mount -t fstype".
20061113:
Support for PCI Message Signalled Interrupts on i386 and amd64
has been added to the kernel and various drivers will soon be
updated to use MSI when it is available. If there are any problems,
MSI can be disabled completely by setting the 'hw.pci.enable_msi'
and 'hw.pci.enable_msix' tunables to 0 in the loader.
20061110:
The MUTEX_PROFILING option has been renamed to LOCK_PROFILING.
The lockmgr object layout has been changed as a result of having
a lock_object embedded in it. As a consequence all file system
kernel modules must be re-compiled. The mutex profiling man page
has not yet been updated to reflect this change.
20061026:
KSE in the kernel has now been made optional and turned on by
default. Use 'nooption KSE' in your kernel config to turn it
off. All kernel modules *must* be recompiled after this change.
There-after, modules from a KSE kernel should be compatible with
modules from a NOKSE kernel due to the temporary padding fields
added to 'struct proc'.
20060929:
mrouted and its utilities have been removed from the base system.
20060927:
Some ioctl(2) command codes have changed. Full backward ABI
compatibility is provided if the "options COMPAT_FREEBSD6" is
present in the kernel configuration file. Make sure to add
this option to your kernel config file, or recompile X.Org
and the rest of ports; otherwise they may refuse to work.
20060924:
tcpslice has been removed from the base system.
20060913:
The sizes of struct tcpcb (and struct xtcpcb) have changed due to
the rewrite of TCP syncookies. Tools like netstat, sockstat, and
systat needs to be rebuilt.
20060903:
libpcap updated to v0.9.4 and tcpdump to v3.9.4
20060816:
The IPFIREWALL_FORWARD_EXTENDED option is gone and the behaviour
for IPFIREWALL_FORWARD is now as it was before when it was first
committed and for years after. The behaviour is now ON.
20060725:
enigma(1)/crypt(1) utility has been changed on 64 bit architectures.
Now it can decrypt files created from different architectures.
Unfortunately, it is no longer able to decrypt a cipher text
generated with an older version on 64 bit architectures.
If you have such a file, you need old utility to decrypt it.
20060709:
The interface version of the i4b kernel part has changed. So
after updating the kernel sources and compiling a new kernel,
the i4b user space tools in "/usr/src/usr.sbin/i4b" must also
be rebuilt, and vice versa.
20060627:
The XBOX kernel now defaults to the nfe(4) driver instead of
the nve(4) driver. Please update your configuration
accordingly.
20060514:
The i386-only lnc(4) driver for the AMD Am7900 LANCE and Am79C9xx
PCnet family of NICs has been removed. The new le(4) driver serves
as an equivalent but cross-platform replacement with the pcn(4)
driver still providing performance-optimized support for the subset
of AMD Am79C971 PCnet-FAST and greater chips as before.
20060511:
The machdep.* sysctls and the adjkerntz utility have been
modified a bit. The new adjkerntz utility uses the new
sysctl names and sysctlbyname() calls, so it may be impossible
to run an old /sbin/adjkerntz utility in single-user mode
with a new kernel. Replace the `adjkerntz -i' step before
`make installworld' with:
/usr/obj/usr/src/sbin/adjkerntz/adjkerntz -i
and proceed as usual with the rest of the installworld-stage
steps. Otherwise, you risk installing binaries with their
timestamp set several hours in the future, especially if
you are running with local time set to GMT+X hours.
20060412:
The ip6fw utility has been removed. The behavior provided by
ip6fw has been in ipfw2 for a good while and the rc.d scripts
have been updated to deal with it. There are some rules that
might not migrate cleanly. Use rc.firewall6 as a template to
rewrite rules.
20060428:
The puc(4) driver has been overhauled. The ebus(4) and sbus(4)
attachments have been removed. Make sure to configure scc(4)
on sparc64. Note also that by default puc(4) will use uart(4)
and not sio(4) for serial ports because interrupt handling has
been optimized for multi-port serial cards and only uart(4)
implements the interface to support it.
20060330:
The scc(4) driver replaces puc(4) for Serial Communications
Controllers (SCCs) like the Siemens SAB82532 and the Zilog
Z8530. On sparc64, it is advised to add scc(4) to the kernel
configuration to make sure that the serial ports remain
functional.
20060317:
Most world/kernel related NO_* build options changed names.
New knobs have common prefixes WITHOUT_*/WITH_* (modelled
after FreeBSD ports) and should be set in /etc/src.conf
(the src.conf(5) manpage is provided). Full backwards
compatibility is maintained for the time being though it's
highly recommended to start moving old options out of the
system-wide /etc/make.conf file into the new /etc/src.conf
while also properly renaming them. More conversions will
likely follow. Posting to current@:
http://lists.freebsd.org/pipermail/freebsd-current/2006-March/061725.html
20060305:
The NETSMBCRYPTO kernel option has been retired because its
functionality is always included in NETSMB and smbfs.ko now.
20060303:
The TDFX_LINUX kernel option was retired and replaced by the
tdfx_linux device. The latter can be loaded as the 3dfx_linux.ko
kernel module. Loading it alone should suffice to get 3dfx support
for Linux apps because it will pull in 3dfx.ko and linux.ko through
its dependencies.
20060204:
The 'audit' group was added to support the new auditing functionality
in the base system. Be sure to follow the directions for updating,
including the requirement to run mergemaster -p.
20060201:
The kernel ABI to file system modules was changed on i386.
Please make sure that your kernel and modules are in sync.
20060118:
This actually occured some time ago, but installing the kernel
now also installs a bunch of symbol files for the kernel modules.
This increases the size of /boot/kernel to about 67Mbytes. You
will need twice this if you will eventually back this up to kernel.old
on your next install.
If you have a shortage of room in your root partition, you should add
-DINSTALL_NODEBUG to your make arguments or add INSTALL_NODEBUG="yes"
to your /etc/make.conf.
20060113:
libc's malloc implementation has been replaced. This change has the
potential to uncover application bugs that previously went unnoticed.
See the malloc(3) manual page for more details.
20060112:
The generic netgraph(4) cookie has been changed. If you upgrade
kernel passing this point, you also need to upgrade userland
and netgraph(4) utilities like ports/net/mpd or ports/net/mpd4.
20060106:
si(4)'s device files now contain the unit number.
Uses of {cua,tty}A[0-9a-f] should be replaced by {cua,tty}A0[0-9a-f].
20060106:
The kernel ABI was mostly destroyed due to a change in the size
of struct lock_object which is nested in other structures such
as mutexes which are nested in all sorts of other structures.
Make sure your kernel and modules are in sync.
20051231:
The page coloring algorithm in the VM subsystem was converted
from tuning with kernel options to autotuning. Please remove
any PQ_* option except PQ_NOOPT from your kernel config.
20051211:
The net80211-related tools in the tools/tools/ath directory
have been moved to tools/tools/net80211 and renamed with a
"wlan" prefix. Scripts that use them should be adjusted
accordingly.
20051202:
Scripts in the local_startup directories (as defined in
/etc/defaults/rc.conf) that have the new rc.d semantics will
now be run as part of the base system rcorder. If there are
errors or problems with one of these local scripts, it could
cause boot problems. If you encounter such problems, boot in
single user mode, remove that script from the */rc.d directory.
Please report the problem to the port's maintainer, and the
freebsd-ports@freebsd.org mailing list.
20051129:
The nodev mount option was deprecated in RELENG_6 (where it
was a no-op), and is now unsupported. If you have nodev or dev listed
in /etc/fstab, remove it, otherwise it will result in a mount error.
20051129:
ABI between ipfw(4) and ipfw(8) has been changed. You need
to rebuild ipfw(8) when rebuilding kernel.
20051108:
rp(4)'s device files now contain the unit number.
Uses of {cua,tty}R[0-9a-f] should be replaced by {cua,tty}R0[0-9a-f].
20051029:
/etc/rc.d/ppp-user has been renamed to /etc/rc.d/ppp.
Its /etc/rc.conf.d configuration file has been `ppp' from
the beginning, and hence there is no need to touch it.
20051014:
Now most modules get their build-time options from the kernel
configuration file. A few modules still have fixed options
due to their non-conformant implementation, but they will be
corrected eventually. You may need to review the options of
the modules in use, explicitly specify the non-default options
in the kernel configuration file, and rebuild the kernel and
modules afterwards.
20051001:
kern.polling.enable sysctl MIB is now deprecated. Use ifconfig(8)
to turn polling(4) on your interfaces.
20050927:
The old bridge(4) implementation was retired. The new
if_bridge(4) serves as a full functional replacement.
20050722:
The ai_addrlen of a struct addrinfo was changed to a socklen_t
to conform to POSIX-2001. This change broke an ABI
compatibility on 64 bit architecture. You have to recompile
userland programs that use getaddrinfo(3) on 64 bit
architecture.
20050711:
RELENG_6 branched here.
20050629:
The pccard_ifconfig rc.conf variable has been removed and a new
variable, ifconfig_DEFAULT has been introduced. Unlike
pccard_ifconfig, ifconfig_DEFAULT applies to ALL interfaces that
do not have ifconfig_ifn entries rather than just those in
removable_interfaces.
20050616:
Some previous versions of PAM have permitted the use of
non-absolute paths in /etc/pam.conf or /etc/pam.d/* when referring
to third party PAM modules in /usr/local/lib. A change has been
made to require the use of absolute paths in order to avoid
ambiguity and dependence on library path configuration, which may
affect existing configurations.
20050610:
Major changes to network interface API. All drivers must be
recompiled. Drivers not in the base system will need to be
updated to the new APIs.
20050609:
Changes were made to kinfo_proc in sys/user.h. Please recompile
userland, or commands like `fstat', `pkill', `ps', `top' and `w'
will not behave correctly.
The API and ABI for hwpmc(4) have changed with the addition
of sampling support. Please recompile lib/libpmc(3) and
usr.sbin/{pmcstat,pmccontrol}.
20050606:
The OpenBSD dhclient was imported in place of the ISC dhclient
and the network interface configuration scripts were updated
accordingly. If you use DHCP to configure your interfaces, you
must now run devd. Also, DNS updating was lost so you will need
to find a workaround if you use this feature.
The '_dhcp' user was added to support the OpenBSD dhclient. Be
sure to run mergemaster -p (like you are supposed to do every time
anyway).
20050605:
if_bridge was added to the tree. This has changed struct ifnet.
Please recompile userland and all network related modules.
20050603:
The n_net of a struct netent was changed to an uint32_t, and
1st argument of getnetbyaddr() was changed to an uint32_t, to
conform to POSIX-2001. These changes broke an ABI
compatibility on 64 bit architecture. With these changes,
shlib major of libpcap was bumped. You have to recompile
userland programs that use getnetbyaddr(3), getnetbyname(3),
getnetent(3) and/or libpcap on 64 bit architecture.
20050528:
Kernel parsing of extra options on '#!' first lines of shell
scripts has changed. Lines with multiple options likely will
fail after this date. For full details, please see
http://people.freebsd.org/~gad/Updating-20050528.txt
20050503:
The packet filter (pf) code has been updated to OpenBSD 3.7
Please note the changed anchor syntax and the fact that
authpf(8) now needs a mounted fdescfs(5) to function.
20050415:
The NO_MIXED_MODE kernel option has been removed from the i386
amd64 platforms as its use has been superceded by the new local
APIC timer code. Any kernel config files containing this option
should be updated.
20050227:
The on-disk format of LC_CTYPE files was changed to be machine
independent. Please make sure NOT to use NO_CLEAN buildworld
when crossing this point. Crossing this point also requires
recompile or reinstall of all locale depended packages.
20050225:
The ifi_epoch member of struct if_data has been changed to
contain the uptime at which the interface was created or the
statistics zeroed rather then the wall clock time because
wallclock time may go backwards. This should have no impact
unless an snmp implementation is using this value (I know of
none at this point.)
20050224:
The acpi_perf and acpi_throttle drivers are now part of the
acpi(4) main module. They are no longer built separately.
20050223:
The layout of struct image_params has changed. You have to
recompile all compatibility modules (linux, svr4, etc) for use
with the new kernel.
20050223:
The p4tcc driver has been merged into cpufreq(4). This makes
"options CPU_ENABLE_TCC" obsolete. Please load cpufreq.ko or
compile in "device cpufreq" to restore this functionality.
20050220:
The responsibility of recomputing the file system summary of
a SoftUpdates-enabled dirty volume has been transferred to the
background fsck. A rebuild of fsck(8) utility is recommended
if you have updated the kernel.
To get the old behavior (recompute file system summary at mount
time), you can set vfs.ffs.compute_summary_at_mount=1 before
mounting the new volume.
20050206:
The cpufreq import is complete. As part of this, the sysctls for
acpi(4) throttling have been removed. The power_profile script
has been updated, so you can use performance/economy_cpu_freq in
rc.conf(5) to set AC on/offline cpu frequencies.
20050206:
NG_VERSION has been increased. Recompiling kernel (or ng_socket.ko)
requires recompiling libnetgraph and userland netgraph utilities.
20050114:
Support for abbreviated forms of a number of ipfw options is
now deprecated. Warnings are printed to stderr indicating the
correct full form when a match occurs. Some abbreviations may
be supported at a later date based on user feedback. To be
considered for support, abbreviations must be in use prior to
this commit and unlikely to be confused with current key words.
20041221:
By a popular demand, a lot of NOFOO options were renamed
to NO_FOO (see bsd.compat.mk for a full list). The old
spellings are still supported, but will cause annoying
warnings on stderr. Make sure you upgrade properly (see
the COMMON ITEMS: section later in this file).
20041219:
Auto-loading of ancillary wlan modules such as wlan_wep has
been temporarily disabled; you need to statically configure
the modules you need into your kernel or explicitly load them
prior to use. Specifically, if you intend to use WEP encryption
with an 802.11 device load/configure wlan_wep; if you want to
use WPA with the ath driver load/configure wlan_tkip, wlan_ccmp,
and wlan_xauth as required.
20041213:
The behaviour of ppp(8) has changed slightly. If lqr is enabled
(``enable lqr''), older versions would revert to LCP ECHO mode on
negotiation failure. Now, ``enable echo'' is required for this
behaviour. The ppp version number has been bumped to 3.4.2 to
reflect the change.
20041201:
The wlan support has been updated to split the crypto support
into separate modules. For static WEP you must configure the
wlan_wep module in your system or build and install the module
in place where it can be loaded (the kernel will auto-load
the module when a wep key is configured).
20041201:
The ath driver has been updated to split the tx rate control
algorithm into a separate module. You need to include either
ath_rate_onoe or ath_rate_amrr when configuring the kernel.
20041116:
Support for systems with an 80386 CPU has been removed. Please
use FreeBSD 5.x or earlier on systems with an 80386.
20041110:
We have had a hack which would mount the root filesystem
R/W if the device were named 'md*'. As part of the vnode
work I'm doing I have had to remove this hack. People
building systems which use preloaded MD root filesystems
may need to insert a "/sbin/mount -u -o rw /dev/md0 /" in
their /etc/rc scripts.
20041104:
FreeBSD 5.3 shipped here.
20041102:
The size of struct tcpcb has changed again due to the removal
of RFC1644 T/TCP. You have to recompile userland programs that
read kmem for tcp sockets directly (netstat, sockstat, etc.)
20041022:
The size of struct tcpcb has changed. You have to recompile
userland programs that read kmem for tcp sockets directly
(netstat, sockstat, etc.)
20041016:
RELENG_5 branched here. For older entries, please see updating
in the RELENG_5 branch.
COMMON ITEMS:
General Notes
-------------
Avoid using make -j when upgrading. From time to time in the
past there have been problems using -j with buildworld and/or
installworld. This is especially true when upgrading between
"distant" versions (eg one that cross a major release boundary
or several minor releases, or when several months have passed
on the -current branch).
Sometimes, obscure build problems are the result of environment
poisoning. This can happen because the make utility reads its
environment when searching for values for global variables.
To run your build attempts in an "environmental clean room",
prefix all make commands with 'env -i '. See the env(1) manual
page for more details.
When upgrading from one major version to another it is generally
best to upgrade to the latest code in the currently installed branch
first, then do an upgrade to the new branch. This is the best-tested
upgrade path, and has the highest probability of being successful.
Please try this approach before reporting problems with a major
version upgrade.
To build a kernel
-----------------
If you are updating from a prior version of FreeBSD (even one just
a few days old), you should follow this procedure. It is the most
failsafe as it uses a /usr/obj tree with a fresh mini-buildworld,
make kernel-toolchain
make -DALWAYS_CHECK_MAKE buildkernel KERNCONF=YOUR_KERNEL_HERE
make -DALWAYS_CHECK_MAKE installkernel KERNCONF=YOUR_KERNEL_HERE
To test a kernel once
---------------------
If you just want to boot a kernel once (because you are not sure
if it works, or if you want to boot a known bad kernel to provide
debugging information) run
make installkernel KERNCONF=YOUR_KERNEL_HERE KODIR=/boot/testkernel
nextboot -k testkernel
To just build a kernel when you know that it won't mess you up
--------------------------------------------------------------
This assumes you are already running a 5.X system. Replace
${arch} with the architecture of your machine (e.g. "i386",
"alpha", "amd64", "ia64", "pc98", "sparc64", etc).
cd src/sys/${arch}/conf
config KERNEL_NAME_HERE
cd ../compile/KERNEL_NAME_HERE
make depend
make
make install
If this fails, go to the "To build a kernel" section.
To rebuild everything and install it on the current system.
-----------------------------------------------------------
# Note: sometimes if you are running current you gotta do more than
# is listed here if you are upgrading from a really old current.
<make sure you have good level 0 dumps>
make buildworld
make kernel KERNCONF=YOUR_KERNEL_HERE
[1]
<reboot in single user> [3]
mergemaster -p [5]
make installworld
make delete-old
mergemaster [4]
<reboot>
To cross-install current onto a separate partition
--------------------------------------------------
# In this approach we use a separate partition to hold
# current's root, 'usr', and 'var' directories. A partition
# holding "/", "/usr" and "/var" should be about 2GB in
# size.
<make sure you have good level 0 dumps>
<boot into -stable>
make buildworld
make buildkernel KERNCONF=YOUR_KERNEL_HERE
<maybe newfs current's root partition>
<mount current's root partition on directory ${CURRENT_ROOT}>
make installworld DESTDIR=${CURRENT_ROOT}
make distribution DESTDIR=${CURRENT_ROOT} # if newfs'd
make installkernel KERNCONF=YOUR_KERNEL_HERE DESTDIR=${CURRENT_ROOT}
cp /etc/fstab ${CURRENT_ROOT}/etc/fstab # if newfs'd
<edit ${CURRENT_ROOT}/etc/fstab to mount "/" from the correct partition>
<reboot into current>
<do a "native" rebuild/install as described in the previous section>
<maybe install compatibility libraries from src/lib/compat>
<reboot>
To upgrade in-place from 5.x-stable to current
----------------------------------------------
<make sure you have good level 0 dumps>
make buildworld [9]
make kernel KERNCONF=YOUR_KERNEL_HERE [8]
[1]
<reboot in single user> [3]
mergemaster -p [5]
make installworld
make delete-old
mergemaster -i [4]
<reboot>
Make sure that you've read the UPDATING file to understand the
tweaks to various things you need. At this point in the life
cycle of current, things change often and you are on your own
to cope. The defaults can also change, so please read ALL of
the UPDATING entries.
Also, if you are tracking -current, you must be subscribed to
freebsd-current@freebsd.org. Make sure that before you update
your sources that you have read and understood all the recent
messages there. If in doubt, please track -stable which has
much fewer pitfalls.
[1] If you have third party modules, such as vmware, you
should disable them at this point so they don't crash your
system on reboot.
[3] From the bootblocks, boot -s, and then do
fsck -p
mount -u /
mount -a
cd src
adjkerntz -i # if CMOS is wall time
Also, when doing a major release upgrade, it is required that
you boot into single user mode to do the installworld.
[4] Note: This step is non-optional. Failure to do this step
can result in a significant reduction in the functionality of the
system. Attempting to do it by hand is not recommended and those
that pursue this avenue should read this file carefully, as well
as the archives of freebsd-current and freebsd-hackers mailing lists
for potential gotchas.
[5] Usually this step is a noop. However, from time to time
you may need to do this if you get unknown user in the following
step. It never hurts to do it all the time. You may need to
install a new mergemaster (cd src/usr.sbin/mergemaster && make
install) after the buildworld before this step if you last updated
from current before 20020224 or from -stable before 20020408.
[8] In order to have a kernel that can run the 4.x binaries
needed to do an installworld, you must include the COMPAT_FREEBSD4
option in your kernel. Failure to do so may leave you with a system
that is hard to boot to recover. A similar kernel option COMPAT_FREEBSD5
is required to run the 5.x binaries on more recent kernels.
Make sure that you merge any new devices from GENERIC since the
last time you updated your kernel config file.
[9] When checking out sources, you must include the -P flag to have
cvs prune empty directories.
If CPUTYPE is defined in your /etc/make.conf, make sure to use the
"?=" instead of the "=" assignment operator, so that buildworld can
override the CPUTYPE if it needs to.
MAKEOBJDIRPREFIX must be defined in an environment variable, and
not on the command line, or in /etc/make.conf. buildworld will
warn if it is improperly defined.
FORMAT:
This file contains a list, in reverse chronological order, of major
breakages in tracking -current. Not all things will be listed here,
and it only starts on October 16, 2004. Updating files can found in
previous releases if your system is older than this.
Copyright information:
Copyright 1998-2005 M. Warner Losh. All Rights Reserved.
Redistribution, publication, translation and use, with or without
modification, in full or in part, in any form or format of this
document are permitted without further permission from the author.
THIS DOCUMENT IS PROVIDED BY WARNER LOSH ``AS IS'' AND ANY EXPRESS OR
IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL WARNER LOSH BE LIABLE FOR ANY DIRECT,
INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.
If you find this document useful, and you want to, you may buy the
author a beer.
Contact Warner Losh if you have any questions about your use of
this document.
$FreeBSD$
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