s/functin/function/ in copy pasted comment.

Use the signal trampoline version constants from <sys/signal.h>.

fix multiplei repetitive typos in comments, messages and documentation. mainly because copy paste code big amount of files are affected.

avoid using 'extern <func|data>;' inside a .c file, but instead
use header files and ensure definitions are not duplicated or
are technically (if not in codegen) wrong.

malloc(9) -> kmem(9) (easy, straight-forward cases only, for now)

uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching th

uvm_availmem(): give it a boolean argument to specify whether a recent
cached value will do, or if the very latest total must be fetched. It can
be called thousands of times a second and fetching the totals impacts not
only the calling LWP but other CPUs doing unrelated activity in the VM
system.

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Rename uvm_free() -> uvm_availmem().

uvmexp.free -> uvm_free()

in many device attach paths, allocate memory with M_WAITOK instead of M_NOWAIT
and remove code to handle failures that can no longer happen.

Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufe

Overhaul the API used to fetch and store individual memory cells in
userspace. The old fetch(9) and store(9) APIs (fubyte(), fuword(),
subyte(), suword(), etc.) are retired and replaced with new ufetch(9)
and ustore(9) APIs that can return proper error codes, etc. and are
implemented consistently across all platforms. The interrupt-safe
variants are no longer supported (and several of the existing attempts
at fuswintr(), etc. were buggy and not actually interrupt-safe).

Also augmement the ucas(9) API, making it consistently available on
all plaforms, supporting uniprocessor and multiprocessor systems, even
those that do not have CAS or LL/SC primitives.

Welcome to NetBSD 8.99.37.

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- rework mm_md_readwrite() to avoid fallthrough warnings entirely

rearrange slightly to enable crash(8) to build.

fix leak.

G/C sys/simplelock.h includes

Add RAS support for sparc.

Adapt for _UC_TLSBASE addition

Move cn_tab initialization to bootstrap()

move cn_tab initializationt to cpu_startup

Remove declartions of physmem

Remove safepri and use IPL_SAFEPRI instead. This may be defined in a MD
header file (if not, a value of 0 is assmued).

Calling _lwp_create() with a bogus ucontext could trigger a kernel
assertion failure (and thus a crash in DIAGNOSTIC kernels). Independently
discovered by YAMAMOTO Takashi and Joel Sing.

To avoid th

Calling _lwp_create() with a bogus ucontext could trigger a kernel
assertion failure (and thus a crash in DIAGNOSTIC kernels). Independently
discovered by YAMAMOTO Takashi and Joel Sing.

To avoid this, introduce a cpu_mcontext_validate() function and move all
sanity checks from cpu_setmcontext() there. Also untangle the netbsd32
compat mess slightly and add a cpu_mcontext32_validate() cousin there.

Add an exhaustive atf test case, based partly on code from Joel Sing.

Should finally fix the remaining open part of PR kern/43903.

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Fix totally uncompilable code. PR 46374 from Henning Petersen.

Remove COMPAT_SA / KERN_SA. Welcome to 6.99.3!
Approved by core@.

Change old-style function defintions to C89 prototypes.

Approved by releng.

converting extent(9) from malloc(9) to kmem(9)
preceding kmem-vmem-pool-uvm patch

releng@ acknowledged