Make tiny volatile to prevent the compiler(s) from
constant folding expressions of the form "1 - tiny",
which are used to raise FE_INEXACT.
Fix the order of "const volatile" to be consistent with
the rest of msun.
Save and restore FPU state across suspend and resume.  In earlier revisions
of this patch, resumectx() called npxresume() directly, but that doesn't
work because resumectx() runs with a non-standard %cs selector.  Instead,
all of the FPU suspend/resume handling is done in C.

MFC after:	1 week
Replace cvsweb link wihg svnweb URL in bktr(4) release notes.
Set the 'inst_length' to '0' early on before any error conditions are detected
in the emulation of the task switch. If any exceptions are triggered then the
guest %rip should point to instruction that caused the task switch as opposed
to the one after it.
Use define from if_var.h to access a field inside struct if_data,
that resides in struct ifnet.

Sponsored by:	Nginx, Inc.
The "SUB" instruction used in getcc() actually does 'x -= y' so use the
proper constraint for 'x'. The "+r" constraint indicates that 'x' is an
input and output register operand.

While here generate code for different variants of getcc() using a macro
GETCC(sz) where 'sz' indicates the operand size.

Update the status bits in %rflags when emulating AND and OR opcodes.

Reviewed by:	grehan
Remove FDT option, since it is in every file, which includes this one.
Enable SCTP support. It runs perfectly fine on a Wandboard quad.

MFC after: 3 days
Ensure that ZFS ARC free memory checks include cached pages

Also restore kmem_used() check for i386 as it has KVA limits that the raw
page counts above don't consider

PR:		187594
Reviewed by:	peter
X-MFC-With: r270759
Review:	D700
Sponsored by:	Multiplay
Merge remote-tracking branch 'freebsd/master' into hardened/current/segvguard
Fix the handling of MMU type in the AP entry code.  The ARM_MMU_V6/V7
symbols are always #defined to 0 or 1, so use #if SYM not #if defined(SYM).
Also, it helps if you include the header file that defines the symbols.
Allow the make_dtb script to work outside of a "make buildkernel" context
by setting MACHINE from uname -m if it's not set already.

Reviewed by:	imp, tuexen
Merge remote-tracking branch 'freebsd/master' into hardened/current/segvguard
Remove ability to write to struct if_data residing in struct ifnet
via net.link.generic.IFMIB_IFDATA.*.IFDATA_GENERAL sysctl. Reasons
for removal are:
- No code in tree uses this possibility.
- The documentation ifmib(4) doesn't say that such possibility
  exist. The example provided in manual page only reads data.
- On many interfaces the feature simply doesn't work, since they
  do accounting in hardware, and overwrite if_data on tick.

Sponsored by:	Nginx, Inc.
Use macros instead of referencing struct if_data that resides in ifnet.

Sponsored by:	Nginx, Inc.
o Remove struct if_data from struct ifnet. Now it is merely API structure
  for route(4) socket and ifmib(4) sysctl.
o Move fields from if_data to ifnet, but keep all statistic counters
  separate, since they should disappear later.
o Provide function if_data_copy() to fill if_data, utilize it in routing
  socket and ifmib handler.
o Provide overridable ifnet(9) method to fetch counters. If no provided,
  if_get_counters_compat() would be used, that returns old counters.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
Move the restored #ifdef i386 test back inside the #ifdef _KERNEL block
where it originally was.
Merge remote-tracking branch 'freebsd/master' into hardened/current/segvguard
Fix character case in examples for "camcontrol security" - should be
"-U user" not "-u user".

PR:		193179
Submitted by:	milios ccsys com
MFC after:	3 days