pci: cleanup __PCI_REROUTE_INTERRUPTS

This flag was used as a transition for differing pcib implementations.
Today it is defined for all supported architectures, and can be removed.

Reviewed by: im

pci: cleanup __PCI_REROUTE_INTERRUPTS

This flag was used as a transition for differing pcib implementations.
Today it is defined for all supported architectures, and can be removed.

Reviewed by: imp, jhb
Differential Revision: https://reviews.freebsd.org/D48485

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Centralize and simpify implemention of some VM macros

These macros have substantially identical implementations on each
platform. Use roundup2/rounddown2 for round_page/trunc_page.

This version st

Centralize and simpify implemention of some VM macros

These macros have substantially identical implementations on each
platform. Use roundup2/rounddown2 for round_page/trunc_page.

This version standardizes on not using explicit casts and instead
preserving the original type. A couple of tweaks were required to
make this work.

Reviewed by: brooks, kib, markj
Obtained from: CheriBSD
Differential Revision: https://reviews.freebsd.org/D48450

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arm: Assume __ARM_ARCH == 7

The only supported 32-bit Arm architecture is Armv7. Remove old checks
for earlier architecture revisions.

Sponsored by: Arm Ltd
Differential Revision: https://reviews.f

arm: Assume __ARM_ARCH == 7

The only supported 32-bit Arm architecture is Armv7. Remove old checks
for earlier architecture revisions.

Sponsored by: Arm Ltd
Differential Revision: https://reviews.freebsd.org/D45957

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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/

Revert "arm: Bump KSTACK_PAGES default to match i386/amd64"

This reverts commit b684d812fcb04b2997fd755405a92c36b9f6e30e.

It causes an issue on a pfsense routing workload where memory
fragmentation

Revert "arm: Bump KSTACK_PAGES default to match i386/amd64"

This reverts commit b684d812fcb04b2997fd755405a92c36b9f6e30e.

It causes an issue on a pfsense routing workload where memory
fragmentation prevents the necessary consecutive pages from being
readily available.

Reported by: pfsense (mjg, scottl)
Approved by: ian
MFC after: 1 day
Differential Revision: https://reviews.freebsd.org/D31244

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arm: Bump KSTACK_PAGES default to match i386/amd64

See 3f6867ef6386 for additional context.

It is also needed for OpenZFS performance and stability.

Reviewed by: ian (arm), imp
Differential Revisi

arm: Bump KSTACK_PAGES default to match i386/amd64

See 3f6867ef6386 for additional context.

It is also needed for OpenZFS performance and stability.

Reviewed by: ian (arm), imp
Differential Revision: https://reviews.freebsd.org/D31244

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Simplify MACHINE_ARCH to be a single string.

Big endian and armv4 mean that we are now down to only two supported
variants. A future change will use MACHINE_ARCH in assembly which
does not support

Simplify MACHINE_ARCH to be a single string.

Big endian and armv4 mean that we are now down to only two supported
variants. A future change will use MACHINE_ARCH in assembly which
does not support C-style string concatentation and thus needs
MACHINE_ARCH defined as a single string.

Reviewed by: imp
Sponsored by: DARPA
Differential Revision: https://reviews.freebsd.org/D25211

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Merge ^/head r357408 through r357661.

Define MAXCPU consistently between the kernel and KLDs.

This reverts r177661. The change is no longer very useful since
out-of-tree KLDs will be built to target SMP kernels anyway. Moveover
it bre

Define MAXCPU consistently between the kernel and KLDs.

This reverts r177661. The change is no longer very useful since
out-of-tree KLDs will be built to target SMP kernels anyway. Moveover
it breaks the KBI in !SMP builds since cpuset_t's layout depends on the
value of MAXCPU, and several kernel interfaces, notably
smp_rendezvous_cpus(), take a cpuset_t as a parameter.

PR: 243711
Reviewed by: jhb, kib
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D23512

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Merge ^/head r325842 through r325998.

spdx: initial adoption of licensing ID tags.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensou

spdx: initial adoption of licensing ID tags.

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.

Initially, only tag files that use BSD 4-Clause "Original" license.

RelNotes: yes
Differential Revision: https://reviews.freebsd.org/D13133

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Merge ^/head r323559 through r325504.

MFhead@r324482

Oversight on armv7 bulk commit: Make MACHINE_ARCH be armv7 for new
enough processors. This isn't ideal, because one could still compile
MACHINE_ARCH armv6, but with armv7 options enabled. We don't no

Oversight on armv7 bulk commit: Make MACHINE_ARCH be armv7 for new
enough processors. This isn't ideal, because one could still compile
MACHINE_ARCH armv6, but with armv7 options enabled. We don't normally
do that, and it's a bit of an edge case so accept the less than ideal
solution here in the absence of something better.

Reported by: strejda@
Sponsored by: Netflix

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Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the
fully-pessimized implementation that requires a type to be aligned to
its natural size.

On armv6+ the compiler might generate load

Revert the recent armv6 changes to ALIGNED_POINTER(), restoring the
fully-pessimized implementation that requires a type to be aligned to
its natural size.

On armv6+ the compiler might generate load-/store-multiple instructions
which require 4-byte alignment even though the source code is only
accessing individual uint32_t values in a way that doesn't require any
particular alignment at all. The compiler apparently feels free to
combine multiple accesses into a single instruction that requires a
more-strict alignment, and no set of compiler flags seems to disable
this behavior (at least in clang 3.8).

This fixes alignment faults on arm systems using wifi adapters. The
wifi code uses ALIGNED_POINTER(p, uint32_t) to decide whether it needs
to copy-align tcp headers. Because clang is combining several uint32_t
accesses into a single ldm instruction, we need to say that accessing a
uint32_t requires 4-byte alignment.

Approved by: re(gjb)

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Disable alignment faults on armv6, adjust various alignment-related macros
to match the new state of affairs. The hardware we support has always been
able to do unaligned accesses, we've just never

Disable alignment faults on armv6, adjust various alignment-related macros
to match the new state of affairs. The hardware we support has always been
able to do unaligned accesses, we've just never enabled it until now.

This brings FreeBSD into line with all the other major OSes, and should help
with the growing volume of 3rd-party software that assumes unaligned access
will just work on armv6 and armv7.

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Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't
have ACLE support built in. The ACLE (ARM C Language Extensions) defines
a set of standardized symbols which indicate the arch

Include machine/acle-compat.h in cdefs.h on arm if the compiler doesn't
have ACLE support built in. The ACLE (ARM C Language Extensions) defines
a set of standardized symbols which indicate the architecture version and
features available. ACLE support is built in to modern compilers (both
clang and gcc), but absent from gcc prior to 4.4.

ARM (the company) provides the acle-compat.h header file to define the
right symbols for older versions of gcc. Basically, acle-compat.h does
for arm about the same thing cdefs.h does for freebsd: defines
standardized macros that work no matter which compiler you use. If ARM
hadn't provided this file we would have ended up with a big #ifdef __arm__
section in cdefs.h with our own compatibility shims.

Remove #include <machine/acle-compat.h> from the zillion other places (an
ever-growing list) that it appears. Since style(9) requires sys/types.h
or sys/param.h early in the include list, and both of those lead to
including cdefs.h, only a couple special cases still need to include
acle-compat.h directly.

Loves it: imp

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Remove hf appending code from param.h for machine arch name.

Submitted by: ian@ andyt@

Merge ^/head r294961 through r295350.

MfH @r295202

Expect to see panics in routing code at least now.

MFH

Sponsored by: The FreeBSD Foundation

Remove NPTEPG definition which is not used anywhere now after
introduction of new pmap dump interface (r294722). And do not
expose pt_entry_t type.

Catch up with head (r291075).

Merge from head

Sponsored by: Gandi.net