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

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

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of

spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD

The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.

Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix

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arm64: Hyper-V: enablement for ARM64 in Hyper-V (Part 3, final)

This is the last part for ARM64 Hyper-V enablement. This includes
commone files and make file changes to enable the ARM64 FreeBSD
gues

arm64: Hyper-V: enablement for ARM64 in Hyper-V (Part 3, final)

This is the last part for ARM64 Hyper-V enablement. This includes
commone files and make file changes to enable the ARM64 FreeBSD
guest on Hyper-V. With this patch, it should be able to build
the ARM64 image and install it on Hyper-V.

Reviewed by: emaste, andrew, whu
Tested by: Souradeep Chakrabarti <schakrabarti@microsoft.com>
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D36744

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MFHead @r350386

Sponsored by: The FreeBSD Foundation

hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardo

hyperv/vmbus: Update VMBus version 4.0 and 5.0 support.

Add VMBus protocol version 4.0. and 5.0 to support Windows 10 and newer HyperV hosts.

For VMBus 4.0 and newer HyperV, the netvsc gpadl teardown must be done after vmbus close.

Submitted by: whu
MFC after: 2 weeks
Sponsored by: Microsoft

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sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error

sys/dev: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.

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Merge ^/head r323559 through r325504.

MFhead@r324497

hyperv/vmbus: Expose Hyper-V major version.

MFC after: 3 days
Sponsored by: Microsoft

Merge ^/head r322398 through r322746.

MFhead@r322515

hyperv: Update copyright for the files changed in 2017

MFC after: 3 days
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D11982

Merge ^/head r311692 through r311807.

hyperv: Add method to read 64bit Hyper-V specific time value.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D9057

Merge ^/head r309817 through r310168.

hyperv: Allow userland to ro-mmap reference TSC page

This paves way to implement VDSO for the enlightened time counter.

Reviewed by: kib
MFC after: 1 week
Sponsored by: Microsoft
Differential Revis

hyperv: Allow userland to ro-mmap reference TSC page

This paves way to implement VDSO for the enlightened time counter.

Reviewed by: kib
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8768

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hyperv: Implement "enlightened" time counter, which is rdtsc based.

Reviewed by: kib
MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8763

Merge ^/head r309519 through r309757.

hyperv/timesync: Support "sent TC" to improve accuracy.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8723

Merge ^/head r303250 through r308226.

hyperv: GC unused functions.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D8406

Merge ^/head r303250 through r304235.

hyperv/vmbus: Reindent function declarations.

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7344

hyperv/vmbus: Inclusion cleanup

MFC after: 1 week
Sponsored by: Microsoft
Differential Revision: https://reviews.freebsd.org/D7334

hyperv/vmbus: Shuffle function declaration and macro definition.

MFC after: 1 week
Sponsored by: Microsoft OSTC
Differential Revision: https://reviews.freebsd.org/D7259