x86 & arm: remove CAM_DEBUG_FLAGS= from MMCCAM kernels

we leave `options CAMDEBUG` enabled, so that when needed, CAM debugging
can be enabled *as needed*, rather than setting a default of everything

x86 & arm: remove CAM_DEBUG_FLAGS= from MMCCAM kernels

we leave `options CAMDEBUG` enabled, so that when needed, CAM debugging
can be enabled *as needed*, rather than setting a default of everything.

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/798

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arm: fix typo in GENERIC-MMCCAM

Reviewed by: imp
Pull Request: https://github.com/freebsd/freebsd-src/pull/798

sys: Remove $FreeBSD$: one-line sh pattern

Remove /^\s*#[#!]?\s*\$FreeBSD\$.*$\n/

arm kernel config: clean up whitespace

Most options in kernel config files use "options<space><tab>OPTION".
This allows the option to be commented out without shifting columns.
A few options had two

arm kernel config: clean up whitespace

Most options in kernel config files use "options<space><tab>OPTION".
This allows the option to be commented out without shifting columns.
A few options had two tabs, and some had spaces. Make them consistent.

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Exclude MMCCAM kernels from make universe

They don't provide any value and are quite arbitrary.

Note arm64 GENERIC-MMCCAM was already excluded, just not the NODEBUG
variant.

The option is already

Exclude MMCCAM kernels from make universe

They don't provide any value and are quite arbitrary.

Note arm64 GENERIC-MMCCAM was already excluded, just not the NODEBUG
variant.

The option is already build-tested with arm64 LINT kernel.

Reviewed by: manu
Differential Revision: https://reviews.freebsd.org/D38458

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Revert r339421 due to unintended files included to commit.

Reported by: ian
Approved by: re (gjb)
Sponsored by: DARPA, AFRL

Support RISC-V implementations that do not manage the A and D bits
(e.g. RocketChip, lowRISC and derivatives).

RISC-V page table entries support A (accessed) and D (dirty) bits. The
spec makes hardw

Support RISC-V implementations that do not manage the A and D bits
(e.g. RocketChip, lowRISC and derivatives).

RISC-V page table entries support A (accessed) and D (dirty) bits. The
spec makes hardware support for these bits optional. Implementations that
do not manage these bits in hardware raise page faults for accesses to a
valid page without A set and writes to a writable page without D set.
Check for these types of faults when handling a page fault and fixup the
PTE without calling vm_fault if they occur.

Reviewed by: jhb, markj
Approved by: re (gjb)
Sponsored by: DARPA, AFRL
Differential Revision: https://reviews.freebsd.org/D17424

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arm: Add GENERIC-MMCCAM kernel config

MMCCAM is the new mmc stack currently developped by kibab@, add a kernel
configuration file that include GENERIC so it's easier to test for people.