sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl s

sys: Remove ancient SCCS tags.

Remove ancient SCCS tags from the tree, automated scripting, with two
minor fixup to keep things compiling. All the common forms in the tree
were removed with a perl script.

Sponsored by: Netflix

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

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

amd64: -m32 support for machine/segments.h

Install the i386 segments.h under /usr/include/i386 on amd64 and include
when targeting i386.

Reviewed by: jhb, imp

amd64: move GDT into PCPU area.

Reviewed by: jhb, markj
Tested by: pho
Sponsored by: The FreeBSD Foundation
MFC after: 1 week
Differential revision: https://reviews.freebsd.org/D22302

amd64: change r_gdt to the local variable in hammer_time().

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

Merge ^/head r325999 through r326131.

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for

sys: further adoption of SPDX licensing ID tags.

Mainly focus on files that use BSD 3-Clause license.

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.

Special thanks to Wind River for providing access to "The Duke of
Highlander" tool: an older (2014) run over FreeBSD tree was useful as a
starting point.

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Merge ^/head r314420 through r314481.

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is

Renumber copyright clause 4

Renumber cluase 4 to 3, per what everybody else did when BSD granted
them permission to remove clause 3. My insistance on keeping the same
numbering for legal reasons is too pedantic, so give up on that point.

Submitted by: Jan Schaumann <jschauma@stevens.edu>
Pull Request: https://github.com/freebsd/freebsd/pull/96

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Merge head

IFC @264767

Merge head up to r262222 (last merge was incomplete).

MFC @ r259205 in preparation for some SVM updates. (for real this time)

Hide struct pcb definition by #ifdef __amd64__ braces. If cc -m32
compilation results in inclusion of the header, a confict arises due
to savefpu being union for i386, but used as struct in the pcb

Hide struct pcb definition by #ifdef __amd64__ braces. If cc -m32
compilation results in inclusion of the header, a confict arises due
to savefpu being union for i386, but used as struct in the pcb
definition. The 32bit code should not need amd64 variant of the
struct pcb anyway.

For struct region_descriptor, use __uint64_t instead of unsigned long,
as the base type for bit-fields. Unsigned long cannot have width 64
for -m32.

The changes allowed to use sys/sysctl.h for cc -m32.

Sponsored by: The FreeBSD Foundation
MFC after: 1 week

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MFC

IFC @ r234692

sys/amd64/include/cpufunc.h
sys/amd64/include/fpu.h
sys/amd64/amd64/fpu.c
sys/amd64/vmm/vmm.c

- Add API to allow vmm FPU state init/save/restore.

FP stuff discussed with: kib

Merge head r232686 through r233825 into projects/pf/head.

Move userland bits (and some common kernel bits) from amd64 and i386
segments.h to a new x86 segments.h.

Add __packed attribute to some structs (just to be sure).
Also make it clear that i386 GDT an

Move userland bits (and some common kernel bits) from amd64 and i386
segments.h to a new x86 segments.h.

Add __packed attribute to some structs (just to be sure).
Also make it clear that i386 GDT and LDT entries are used in ia64 code.

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Merge head up to r232685 to projects/pf/head.

Resort the IDT_DTRACE_RET constant after it was changed to be less than
IDT_SYSCALL.

IFC @230489 (pending review).

IFC @ r227804

Pull in the virtio drivers from head.

Fix the DTrace pid return trap interrupt vector. Previously we were using
31, but that vector is reserved.

Without this fix, running dtrace -p <pid> would either cause the target
process to crash o

Fix the DTrace pid return trap interrupt vector. Previously we were using
31, but that vector is reserved.

Without this fix, running dtrace -p <pid> would either cause the target
process to crash or the kernel to page fault.

Obtained from: rpaulo
MFC after: 3days

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Merge svn+ssh://svn.freebsd.org/base/head@214309

Register an interrupt vector for DTrace return probes. There is some
code missing in lapic to make sure that we don't overwrite this entry,
but this will be done on a sequent commit.

Sponsored by: T

Register an interrupt vector for DTrace return probes. There is some
code missing in lapic to make sure that we don't overwrite this entry,
but this will be done on a sequent commit.

Sponsored by: The FreeBSD Foundation

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