Clarify the expected usage of I2C 7-bit slave addresses on ioctl(2)
interface.

While here add the cross reference to iic(4) on iicbus(4).

CR:		D210
Suggested by:	jmg
MFC after:	1 week
Correct memset size.

Submitted by:	Sascha Wildner (swildner at dragonflybsd dot org)
Reviewed by:	Kashyap Desai <kashyap.desai avagotech.com>
MFC after:	2 weeks
Apply vendor fixes for big endian support and 20GBps/25GBps link speeds.

Many thanks to Emulex for their continued support of FreeBSD!

Submitted by:	Venkata Duvvuru <VenkatKumar.Duvvuru Emulex.Com>
MFC after:	3 days
Catch up with many years of changes:

o Document PF_LOCAL as being an alias for PF_UNIX
o Document POSIX standardization of this interface using AF_*
  constants rather than PF_* constants, and note the three particular
  families which POSIX standardizes.
o Note anticipated POSIX standardization of SOCK_CLOEXEC.
o Delete from listing protocol families that FreeBSD doesn't support
  (in some cases, like PF_PUP, has never supported).
o Add to listing some current protocol families that have been
  introduced in the last decade or so.
o Document the correspondence of PF_* and AF_* constants.

We should probably change the documentation to make the AF_* constants
primary, but this commit does not do so.

Reviewed by:	kevlo@
MFC after:	1 month
Unbreak installation of the rtld tests.

X-MFC-With:	r267679
Vendor import of file 5.19.
Make sure that the sub-makes for unwind.h start from the CURDIR
(/usr/src) tree rather than the OBJDIR (/usr/obj) tree. This fixes
broken incremental builds with the canonical MAKESYSPATH workaround
of .../share/mk. This is a gross kludge.
Now that vm_map_insert() sets MAP_ENTRY_GROWS_{DOWN,UP} on the stack entries
that it creates (r267645), we can place the check that blocks map entry
coalescing on stack entries in vm_map_simplify_entry() where it properly
belongs.

Reviewed by:	kib
Continue the crusade towards a dev_clone()-free kernel, removing its
usage from dtrace. The dtrace code already uses cdevpriv(9) since FreeBSD
8, so this change should be quite harmless.

Reviewed by:	markj
Approved by:	markj
MFC after:	never
Fixed an IIC timing issue between the glxiic master and a slave of
peripheral devices.  When transmitting (rx) from slave to master,
sometimes nAKC delays. As a result, some slaves fails their
transmission.

Submitted by:	Masanori OZAWA <ozawa@ongs.co.jp>
Reviewed by:	brix
MFC after:	1 week
Add m_pulldown and m_unshare to MLINKS.
Add fpu_kern.9 man page to the install.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
xen/virtio: fix balloon drivers to not mark pages as WIRED

Prevent the Xen and VirtIO balloon drivers from marking pages as
wired. This prevents them from increasing the system wired page count,
which can lead to mlock failing because of hitting the limit in
vm.max_wired.

In the Xen case make sure pages are zeroed before giving them back to
the hypervisor, or else we might be leaking data. Also remove the
balloon_{append/retrieve} and link pages directly into the
ballooned_pages queue using the plinks.q field in the page struct.

Sponsored by: Citrix Systems R&D
Reviewed by: kib, bryanv
Approved by: gibbs

dev/virtio/balloon/virtio_balloon.c:
 - Don't allocate pages with VM_ALLOC_WIRED.

dev/xen/balloon/balloon.c:
 - Don't allocate pages with VM_ALLOC_WIRED.
 - Make sure pages are zeroed before giving them back to the
   hypervisor.
 - Remove the balloon_entry struct and the balloon_{append/retrieve}
   functions and use the page plinks.q entry to link the pages
   directly into the ballooned_pages queue.
Mark send-pr info page as an obsolete file
Remove csup(1) and its associated cpasswd(1) tool.

With the move by the FreeBSD Project away from CVSup as a distribution
mechanism, there is no longer a need to keep this in base.

Approved by:	mux (around a year ago), silence on -hackers
X-MFC-after:	never
Remove an nunnecessary reference to csup.
Drop example variables for updating over csup.  These have not functioned
since r251084.

MFC after:	1 week
Drop references to updating over csup from build(7).

MFC after:	1 week
Remove example cvsup config files.

MFC after:	1 week
MFV	r260708

4427 pid provider rejects probes with valid UTF-8 names

This make use of Solaris' u8_validate() which we happen to
use since r185029 for ZFS.

Illumos Revision:	1444d846b126463eb1059a572ff114d51f7562e5

Reference:
https://www.illumos.org/issues/4427

Obtained from:	Illumos
MFC after:	2 weeks