sys: Remove $FreeBSD$: two-line .h pattern

Remove /^\s*\*\n \*\s+\$FreeBSD\$$\n/

arm: Rename pte-v6.h to pte.h

There is no need for this to be versioned after the removal of armv4/v5

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D41139

Remove redundant ARM_L2_ADDR_BITS and L2_ADDR_BITS definitions and
replace them by primary ones where needed.

Remove redundant L2_ADDR_MASK definition and replace it by primary one.

Remove unneeded definitions after r291406. Also remove redundant and
not used L1_ADDR_BITS definition.

Merge ^/head r294961 through r295350.

MfH @r295202

Expect to see panics in routing code at least now.

MFH

Sponsored by: The FreeBSD Foundation

ARM: remove old pmap-v6 code. The new pmap-v6 is mature enough, and
dual implementation is showstopper for major cleanup.

This patch only removes old code from tree. Cleanups will follow asap.

Merge ^/head r294599 through r294776.

MFH

Sponsored by: The FreeBSD Foundation

Create new pmap dump interface for minidump and use it for existing
pmap implementations on ARM. This way minidump code can be used without
any platform specific modification.

Also, this is the last

Create new pmap dump interface for minidump and use it for existing
pmap implementations on ARM. This way minidump code can be used without
any platform specific modification.

Also, this is the last piece missing for ARM_NEW_PMAP.

Differential Revision: https://reviews.freebsd.org/D5023

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Catch up with HEAD (r280229-r284686).

Merge sync of head

MFH: r280643-r281852

Sponsored by: The FreeBSD Foundation

Merge from HEAD

New pmap code for armv6. Disabled by default, option ARM_NEW_PMAP enables it.

This is pretty much a complete rewrite based on the existing i386 code. The
patches have been circulating for a couple

New pmap code for armv6. Disabled by default, option ARM_NEW_PMAP enables it.

This is pretty much a complete rewrite based on the existing i386 code. The
patches have been circulating for a couple years and have been looked at by
plenty of people, but I'm not putting anybody on the hook as having reviewed
this in any formal sense except myself.

After this has gotten wider testing from the user community, ARM_NEW_PMAP
will become the default and various dregs of the old pmap code will be
removed.

Submitted by: Svatopluk Kraus <onwahe@gmail.com>,
Michal Meloun <meloun@miracle.cz>

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Merge head r233826 through r256722.

IFC @256277

Approved by: ken (mentor)

IFC @ r255692

Comment out IA32_MISC_ENABLE MSR access - this doesn't exist on AMD.
Need to sort out how arch-specific MSRs will be handled.

Merge from head

IFC @ r255209

MFC

Introduce superpages support for ARMv6/v7.

Promoting base pages to superpages can increase TLB coverage and allow for
efficient use of page table entries. This development provides FreeBSD/ARM
with

Introduce superpages support for ARMv6/v7.

Promoting base pages to superpages can increase TLB coverage and allow for
efficient use of page table entries. This development provides FreeBSD/ARM
with superpages management mechanism roughly equivalent to what we have for
i386 and amd64 architectures.

1. Add mechanism for automatic promotion of 4KB page mappings to 1MB section
mappings (and demotion when not needed, respectively).

2. Managed and non-kernel mappings are now superpages-aware.

3. The functionality can be enabled by setting "vm.pmap.sp_enabled" tunable to
a non-zero value (either in loader.conf or by modifying "sp_enabled"
variable in pmap-v6.c file). By default, automatic promotion is currently
disabled.

Submitted by: Zbigniew Bodek <zbb@semihalf.com>
Reviewed by: alc
Sponsored by: The FreeBSD Foundation, Semihalf

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MFC @ r241285