Delete obsolete /* ARGSUSED */ lint comments.

ok miod@ millert@

remove unneeded includes in arch/i386
ok krw@ miod@

Remove almost unused `flags' argument of suser().

The account flag `ASU' will no longer be set but that makes suser()
mpsafe since it no longer mess with a per-process field.

No objection from mill

Remove almost unused `flags' argument of suser().

The account flag `ASU' will no longer be set but that makes suser()
mpsafe since it no longer mess with a per-process field.

No objection from millert@, ok tedu@, bluhm@

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fcntl(F_SETFL) invokes the FIONBIO and FIOASYNC ioctls internally, so
the memory devices (/dev/null, /dev/zero, etc) need to permit them.

problem noted, tweak, and testing by jeremy@
ok deraadt@

Tweak lock inits to make the system runnable with witness(4)
on amd64 and i386.

Make a move towards ending 4 decades of kernel snooping.

Add sysctl kern.allowkmem (default 0) which controls the ability to open
/dev/mem or /dev/kmem at securelevel > 0. Over 15 years we converte

Make a move towards ending 4 decades of kernel snooping.

Add sysctl kern.allowkmem (default 0) which controls the ability to open
/dev/mem or /dev/kmem at securelevel > 0. Over 15 years we converted 99%
of utilities in the tree to operate on sysctl-nodes (either by themselves
or via code hiding in the guts of -lkvm).

pstat -d and -v & procmap are affected and continued use of them will
require kern.allowkmem=1 in /etc/sysctl.conf. acpidump (and it's
buddy sendbug) are affected, but we'll work out a solution soon.

There will be some impact in ports.

ok kettenis guenther

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move static variable up to first

normalize some comments

replace hand rolled physlock with real rwlock. ok mlarkin

sizes for free(); ok semarie

convert several malloc(9) to mallocarray(9).

ok deraadt@ guenther@ "re-wrap the long lines" kettenis@

Make it possible to create write combing mappings through /dev/mem. This is
done by introducining a magic offset. Pages below this offset are mapped
with default memory attributes. Above this offs

Make it possible to create write combing mappings through /dev/mem. This is
done by introducining a magic offset. Pages below this offset are mapped
with default memory attributes. Above this offset pages are mapped write
combining.

ok mlarkin@

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when machdep.allowaperture sysctl is set to 3, allow concurrent access

Convert to uiomove().
ok guenther@

First step towards making uiomove() take a size_t size argument:
- rename uiomove() to uiomovei() and update all its users.
- introduce uiomove(), which is similar to uiomovei() but with a size_t.
-

First step towards making uiomove() take a size_t size argument:
- rename uiomove() to uiomovei() and update all its users.
- introduce uiomove(), which is similar to uiomovei() but with a size_t.
- rewrite uiomovei() as an uiomove() wrapper.
ok kettenis@

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Replace a plethora of historical protection options with just
PROT_NONE, PROT_READ, PROT_WRITE, and PROT_EXEC from mman.h.
PROT_MASK is introduced as the one true way of extracting those bits.
Remove

Replace a plethora of historical protection options with just
PROT_NONE, PROT_READ, PROT_WRITE, and PROT_EXEC from mman.h.
PROT_MASK is introduced as the one true way of extracting those bits.
Remove UVM_ADV_* wrapper, using the standard names.
ok doug guenther kettenis

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remove uneeded proc.h includes
ok mpi@ kspillner@

add a size argument to free. will be used soon, but for now default to 0.
after discussions with beck deraadt kettenis.

Mtrr stops being a pseudo-device. We need to probe the cpu type and
initialize the structures when we see the first cpu. We also need to
initialize each cpu's properly (for PAT) before we setup mtr

Mtrr stops being a pseudo-device. We need to probe the cpu type and
initialize the structures when we see the first cpu. We also need to
initialize each cpu's properly (for PAT) before we setup mtrr on that
cpu. On i386 (late hatch) we were getting this desperately wrong on
the primary cpu.

After suspend/resume, we also need to do the same work. re-initialize
PAT before mtrr. On some laptops apparently PAT was not turned on by the
BIOS, so we ended up with incorrect setup for the primary cpu. Oops.

This makes mplayer on the x201 (and similar) machines work without weird
pauses after a suspend/resume. Many other things are likely fixed.
ok kettenis

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Kill pmap_phys_address(), and force every driver's mmap() routine to return
a physical address [more precisely, something suitable to pass to pmap_enter()'sphysical address argument].

This allows MI

Kill pmap_phys_address(), and force every driver's mmap() routine to return
a physical address [more precisely, something suitable to pass to pmap_enter()'sphysical address argument].

This allows MI drivers to implement mmap() routines without having to know
about the pmap_phys_address() implementation and #ifdef obfuscation.

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Trivial lvalue abuse fixes, no binary changes.
ok millert@ tedu@

since mmclose() is only called once for the final close,
set ap_open_count = 0 in mmclose() instread of decrementing it.
ok miod@, oga@.

Use M_ZERO in a few more places to shave bytes from the kernel.

eyeballed and ok dlg@

replace the machine dependant bytes-to-clicks macro by the MI ptoa()
version for i386

more architectures and ctob() replacement is being worked on

prodded by and ok miod

Avoid void * arithmetic, okay deraadt@, suggestions from millert@