- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

MFC r277454, r277460, r277465, r277466, r277467, r277469, r277470, r277471,
r277472, r277473, r277474, r277475, r277476, r277477, r277478, r277479,
r277480, r277512, r277516:

Add inline implementations of arm bus_space_read/write_N().

Revise the arm bus_space implementation to avoid dereferencing the tag on
every operation to retrieve the bs_cookie value almost nothing actually uses.

Use the explicit member initializer style to init the bus_space struct.

Use arm/bus_space-v6.c for all armv6 systems

Consolidate many identical implementations of bus_space to a single
common tag and implementation shared by armv4 and armv6.

Micro-optimize the new arm inline bus_space implementation by grouping all
the data the inline functions access together at the start of the bus_space
struct so that they all fit in a single cache line.

MFC 265852: Map device memory using PTE_DEVICE rather than PTE_NOCACHE.

MFC 262952, 262958, 262966, 262979, 262980, 262986, 262987, 262995, 262997,
263030, 263033, 263034, 263056, 263057,

Remove all the redundant external declarations of exception vectors and
runtime setting of the pointers that's scattered around various places.

Remove all traces of support for ARM chips prior to the arm9 series.

Make the default exception handler vectors point to where I thought they
were already pointing: the default handlers (not a panic that says there
is no default handler).

Eliminate irq_dispatch.S. Move the data items it contained into
arm/intr.c and the functionality it provided into arm/exception.S.

Move the exception vector table (so-called "page0" data) into exception.S
and eliminate vectors.S.

Change the way the asm GET_CURTHREAD_PTR() macro is defined so that code
using it doesn't have to have an "AST_LOCALS" macro somewhere in the file.

Arrange for arm fork_trampoline() to return to userland via the standard
swi_exit code in exception.S instead of having its own inline expansion
of the DO_AST and PULLFRAME macros.

Now that the PUSHFRAME and PULLFRAME macros are used only in the swi
entry/exit code, they don't need to be macros. Except that didn't work
and the whole change was reverted.

Remove some unnecessary indirection and jump right to the handler functions.

Use panic rather than printf to "handle" an arm26 address exception
(should never happen on arm32).

Remove the unreferenced DATA() macro.

Remove #include <machine/asmacros.h> from files that don't need it.

MFC r261643, r261646, r261648, r261649, r261651, r261656, r261657, r261663,
r261676, r261677, r261698, r261778

Consolidate code related to setting up physical memory configuration into
a new physmem.c file.

Replace compile-time constant KERNPHYSADDR with abp_physaddr

Calculate the kernel's load address from the PC in the elf / gzip
trampoline instead of relying on KERNPHYSADDR as a compile-time constant.

It turns out a global variable is the only straightforward way to
communicate the kernel's physical load address from where it's known in
initarm() into cpu_mp_start() which is called from non-arm code and
takes no parameters.

Remove the now unused MMU_INIT macro.

Use vm_paddr_t, not vm_offset_t, when dealing with physical addresses.

No need to set physmem in each initarm() instance anymore, it's handled
in common code now.

Pass the pagetable used from locore.S to initarm to allow it to map data
in as required.

Fix the physmem exclude-region clipping logic for the edge-trim case.

Add some extra debugging output when DEBUG is defined.

Update legacy platforms to use new arm_physmem helper routines.

MFC r257549, r261642

Don't create a distinct free page pool for segregating allocations that are
accessed through the direct map unless the kernel configuration actually
includes a direct map. Only a few configurations do, and for the rest the
unnecessary free page pool is a small pessimization.

Remove the ARM_USE_SMALL_ALLOC option and code related to it.

MFC r258392, r258412:

Call cpu_setup() immediately after the page tables are installed. This
enables data cache and other chip-specific features. It was previously
done via an early SYSINIT, but it was being done after pmap and vm setup,
and those setups need to use mutexes. On some modern ARM platforms,
the ldrex/strex instructions that implement mutexes require the data cache
to be enabled.

Call cpu_setup() from the initarm() routine on platforms that don't use
the common FDT-aware initarm() in arm/machdep.c.

MFC r257648, r257649, r257660:

Begin reducing code duplication in arm pmap.c and pmap-v6.c by factoring
out common code related to mapping device memory into a new devmap.c file.

Remove the growing duplication of code that used pmap_devmap_find_pa() and
then did some math with the returned results to generate a virtual address,
and likewise in reverse to get a physical address. Now there are a pair
of functions, arm_devmap_vtop() and arm_devmap_ptov(), to do that. The
bus_space_map() implementations are rewritten in terms of these.

Move remaining code and data related to static device mapping into the
new devmap.[ch] files. Emphasize the MD nature of these things by using
the prefix arm_devmap_ on the function and type names (already a few of
these things found their way into MI code, hopefully it will be harder to
do by accident in the future).

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Eliminate a redundant #include: machine/pmap.h is already included
through vm/pmap.h.

Complete r247297:
Remove unused inclusions of vm/vm_pager.h and vm/vnode_pager.h.

Sponsored by: EMC / Isilon storage division

Initialize vm_max_kernel_address on non-FDT platforms. (This should have
been included in r246926.)

The second parameter to pmap_bootstrap() is redundant. Eliminate it.

Reviewed by: andrew

Clean up the two i80321 copies of initarm to be closer to one another.

Create a common set_stackptrs in sys/arm/machdep.c.

On single core devices set_stackptrs is only ever called with cpu = 0 in
initarm and will be identical to the existing function. On SMP this needs
to be implemented for sys/arm/mp_machdep.c, but the implementations are
identical for each SoC.

Merging projects/armv6, part 1

Cummulative patch of changes that are not vendor-specific:
- ARMv6 and ARMv7 architecture support
- ARM SMP support
- VFP/Neon support
- ARM Generic Interrupt Controller driver
- Simplification of startup code for all platforms

Remove some unused variables/externs that have been copied too many times...

Modify all the arm platform files to call parse_boot_param passing in
the boot parameters from initarm first thing. parse_boot_param parses
the boot arguments and converts them to the /boot/loader metadata the
rest of the kernel uses. parse_boot_param is a weak alias to
fake_preload_metadata, which all the platforms use now, but may become
more extensive in the future.

Since it is a weak symbol, specific boards may define their own
parse_boot_param to interface to custom boot loaders.

Reviewed by: cognet@, Ian Lapore

Remove leakage of other patches into last commit.

trim trailing spaces that have accumulated over the years (these files
served as the basis for too many other platforms).

Remove an unneeded increment from initarm. The variable is uninitialised,
is not used in this part of the function and correctly initialised later
when it is used.

Pull out the common code to initialise proc0 & thread0 from initarm to a
common function.

Reviewed by: imp

Minor rearrangement of the locore <-> initarm interface. Pass in a
structure with the first 4 registers to allow a wider range of boot
loaders to work. Future commits will make use of this to centralize
support for the different loaders.

Call init_param1() much earlier, so that msgbufsize is non-zero when we want
to map and use the msgbuf.

Make MSGBUF_SIZE kernel option a loader tunable kern.msgbufsize.

Submitted by: perryh pluto.rain.com (previous version)
Reviewed by: jhb
Approved by: kib (mentor)
Tested by: universe

Implement a facility for dynamic per-cpu variables.
- Modules and kernel code alike may use DPCPU_DEFINE(),
DPCPU_GET(), DPCPU_SET(), etc. akin to the statically defined
PCPU_*. Requires only one extra instruction more than PCPU_* and is
virtually the same as __thread for builtin and much faster for shared
objects. DPCPU variables can be initialized when defined.
- Modules are supported by relocating the module's per-cpu linker set
over space reserved in the kernel. Modules may fail to load if there
is insufficient space available.
- Track space available for modules with a one-off extent allocator.
Free may block for memory to allocate space for an extent.

Reviewed by: jhb, rwatson, kan, sam, grehan, marius, marcel, stas

- Fix spelling error in comments.

PR: arm/128891
Submitted by: Pavel Pankov <pankov_p@mail.ru>
Approved by: kib (mentor)

Eliminate unused global variables. (These global variables became fields of
struct kva_md_info many years ago.)

Remove some long-dead code

Reviewed by: cognet

Take the first baby step towards unifying and cleaning up arminit():
- Pull all the code to deal with the trampoline stuff into one
centeralized place and use it from everywhere.
- Some minor style tidiness

Reviewed by: tinguely

Fix for the panic("vm_thread_new: kstack allocation failed") and
silent NULL pointer dereference in the i386 and sparc64 pmap_pinit()
when the kmem_alloc_nofault() failed to allocate address space. Both
functions now return error instead of panicing or dereferencing NULL.

As consequence, vmspace_exec() and vmspace_unshare() returns the errno
int. struct vmspace arg was added to vm_forkproc() to avoid dealing
with failed allocation when most of the fork1() job is already done.

The kernel stack for the thread is now set up in the thread_alloc(),
that itself may return NULL. Also, allocation of the first process
thread is performed in the fork1() to properly deal with stack
allocation failure. proc_linkup() is separated into proc_linkup()
called from fork1(), and proc_linkup0(), that is used to set up the
kernel process (was known as swapper).

In collaboration with: Peter Holm
Reviewed by: jhb

Remove duplicate includes.

Submitted by: Cyril Nguyen Huu <cyril ci0 org>

Remove sa1_cache_clean_addr. It isn't needed.

Threading cleanup.. part 2 of several.

Make part of John Birrell's KSE patch permanent..
Specifically, remove:
Any reference of the ksegrp structure. This feature was
never fully utilised and made things overly complicated.
All code in the scheduler that tried to make threaded programs
fair to unthreaded programs. Libpthread processes will already
do this to some extent and libthr processes already disable it.

Also:
Since this makes such a big change to the scheduler(s), take the opportunity
to rename some structures and elements that had to be moved anyhow.
This makes the code a lot more readable.

The ULE scheduler compiles again but I have no idea if it works.

The 4bsd scheduler still reqires a little cleaning and some functions that now do
ALMOST nothing will go away, but I thought I'd do that as a separate commit.

Tested by David Xu, and Dan Eischen using libthr and libpthread.

Compile -- remove an unused global variable avail_end.

Approved by: cognet

Make KSE a kernel option, turned on by default in all GENERIC
kernel configs except sun4v (which doesn't process signals properly
with KSE).

Reviewed by: davidxu@

Fill in dump_avail[] before pmap_boostrap() is called so that
ARM_USE_SMALL_ALLOC work.

Finally bring it support for the i80219 XScale processor.

Submitted by: Max M. Boyarov <m.boyarov bsd by>