address and use this mechanism when:

1. kmem_alloc_{attr,contig}() can't find suitable free pages in the physical
   memory allocator's free page lists.  This replaces the long-standing
   approach of scanning the inactive and inactive queues, converting clean
   pages into PG_CACHED pages and laundering dirty pages.  In contrast, the
   new mechanism does not use PG_CACHED pages nor does it trigger a large
   number of I/O operations.

2. on 32-bit MIPS processors, uma_small_alloc() and the pmap can't find
   free pages in the physical memory allocator's free page lists that are
   covered by the direct map.  Tested by: adrian

3. ttm_bo_global_init() and ttm_vm_page_alloc_dma32() can't find suitable
   free pages in the physical memory allocator's free page lists.

In the coming months, I expect that this new mechanism will be applied in
other places.  For example, balloon drivers should use relocation to
minimize fragmentation of the guest physical address space.

Make vm_phys_alloc_contig() a little smarter (and more efficient in some
cases).  Specifically, use vm_phys_segs[] earlier to avoid scanning free
page lists that can't possibly contain suitable pages.

Reviewed by:	kib, markj
Glanced at:	jhb
Discussed with:	jeff
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D4444

reported link state is fictional (always up) since the hypervisor does
not provide this information.

MFC after:	1 week

Use strlcpy instead of strncpy to guarantee NULL termination.

Pointed out by:	imp
CID:		1007252
X-MFC with:	r292454

CID:		1007252
MFC after:	2 weeks

We need to change netdb.h to make it actually enabled.

PR:		198092
MFC after:	1 week

Suggested by:	hrs
MFC after:	1 week

PR:		198092
MFC after:	1 week

Submitted by:	luke <luke.tw@gmail.com>
Pointy hat to:	jhb

EFI return values set the high bit to indicate an error. The log
messages changed here are printed only in the case of an error,
so including the error bit is redundant. Also switch to decimal to
match the error definitions (in sys/boot/efi/include/efierr.h).

MFC after:	1 week
Sponsored by:	The FreeBSD Foundation

FreeBSD local name resolution.
If /var/yp/ipnodes exists, we generate them from it for backward
compatibility.

Inspired by:	NetBSD
MFC after:	1 week

During fork p_starcopy - p_endcopy area of a process is populated with bcopy
with only proc lock held. Another forking thread can find such a process and
proceed to access p_pgrp included in said area.

Fix the problem by moving the field outside. It is being properly assigned
later.

Reviewed by:	kib
Diagnosed by:	kib
Tested by:	Fabian Keil <freebsd-listen fabiankeil.de>
MFC after:	10 days

message garbling was becoming very noticeable on the 64-CPU systems we now
support and run on.

for the softc for the delay module.

Noticed by: rpokala@

- Add comment how we handle hosts and ipnodes. (from NetBSD)

MFC after:	1 week.

MFC after:	2 weeks

MFC after:	2 weeks

MFC after:	2 weeks
Relnotes:	yes

kernel. This will be used for passing in things like the system table
from EFI or other similar metadata that can be used by the kernel to
communicate with the firmware.

though the encoding is bit-wise today...

Suggested by: jmallet@

The ci20 port (by kan@) is going to reuse almost all of the intrng code
since the SoC in question looks suspiciously like someone took an ARM
SoC design and replaced the ARM core with a MIPS core.

* migrate out the code;
* rename ARM_ -> INTR_;
* rename arm_ -> intr_;
* move the interrupt flush routine from intr.c / intrng.c into
  arm/machdep_intr.c - removing the code duplication and removing
  the ARM specific bits from here.

Thanks to the Star Wars: The Force Awakens premiere line for allowing
me a couple hours of quiet time to finish the universe builds.

Tested:

* make universe

TODO:

* The structure definitions in subr_intr.c still includes machine/intr.h
  which requires one duplicates all of the intrng definitions in
  the platform code (which kan has done, and I think we don't have to.)

  Instead I should break out the generic things (function declarations,
  common intr structures, etc) into a separate header.

* Kan has requested I make the PIC based IPI stuff optional.

Differential Review: https://reviews.freebsd.org/D4517

bus probing during system startup.

I don't know what alternate universe I was inhabiting when I wrote it
originally, but apparently the basic workings of mathematics were different
than in this universe.  I also can't explain how it ever worked, except "by
accident", because completely bogus values were being written into the
divisor register.

Different revisions support different operations.  Refer to Intel
External Design Specifications to figure out what your hardware
supports.

Sponsored by:	EMC / Isilon Storage Division

Submitted by:	avos
Reported by:	Ev Bogdanov <evbogdanov yahoo.com>
Tested by:	Ivan Kormachev <ikormachev depit.ru>
MFC after:	3 days

current MBR.

PR:		205322
Submitted by:	Alexander Kuleshov <kuleshovmail@gmail.com>
MFC after:	1 week

instead of GMBUS access for I2C transfers.  The GMBUS driver falls back
to this mode when a transfer times out.  However, the first transfer to
timeout was sending the request back to itself resulting in an panic due
to recursing on a lock.  Fix it to forward the request on to the proper
device.  This appears to have been accidentally changed in r277487.

Reported by:	Joe Maloney <jmaloney@pcbsd.org>
Reviewed by:	adrian, dumbbell, imp
MFC after:	1 week
Differential Revision:	https://reviews.freebsd.org/D4599

PR:		204769
Submitted by:	David Binderman <dcb314@hotmail.com>
MFC after:	1 week

kernel and userland.

Reviewed by:	andrew, imp, kib
Sponsored by:	DARPA, AFRL
Sponsored by:	HEIF5
Differential Revision:	https://reviews.freebsd.org/D4554

It turns out the callers of vm_page_replace know exactly which page they are
replacing and would like to assert about it.  Change those from hard panics to
KASSERTs, and provide them with a wrapper so they don't have to deal with
warnings from an INVARIANTS-dependent dead store of the return value of
vm_page_replace.

Submitted by:	Ryan Libby <rlibby@gmail.com>
Reviewed by:	alc, kib (earlier version)
Sponsored by:	EMC / Isilon Storage Division
Differential Revision:	https://reviews.freebsd.org/D4497

the #address-cells property set. For this we need to read more data before
the parent interrupt description.

this is only enabled on arm64 for now as it's not quite compliant with the
ePAPR spec. We should use a default of 2 where the #address-cells property
is missing, however this will need further testing across architectures.

Obtained from:	ABT Systems Ltd
Sponsored by:	SoftIron Inc
Differential Revision:	https://reviews.freebsd.org/D4518

glebius has concerns about these changes so reverting those can be discussed
and addressed.

Sponsored by:	Multiplay