7 files changed, 299 insertions, 7 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index 34edf6ad455d..752ae9f165ca 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -189,6 +189,7 @@ MAN=	aac.4 \
 	geom.4 \
 	geom_linux_lvm.4 \
 	geom_uzip.4 \
+	geom_zero.4 \
 	gif.4 \
 	${_gve.4} \
 	gpio.4 \
@@ -1012,6 +1013,7 @@ _dtrace_provs=	dtrace_audit.4 \
 		dtrace_ip.4 \
 		dtrace_kinst.4 \
 		dtrace_lockstat.4 \
+		dtrace_pid.4 \
 		dtrace_proc.4 \
 		dtrace_profile.4 \
 		dtrace_sched.4 \
@@ -1122,6 +1124,7 @@ MAN+=	\
 	veriexec.4 \
 	zyd.4
 
+MLINKS+=geom_zero.4 gzero.4
 MLINKS+=mtw.4 if_mtw.4
 MLINKS+=otus.4 if_otus.4
 MLINKS+=rsu.4 if_rsu.4
diff --git a/share/man/man4/ciss.4 b/share/man/man4/ciss.4
index 28d6556ecd85..d731aaddad38 100644
--- a/share/man/man4/ciss.4
+++ b/share/man/man4/ciss.4
@@ -1,7 +1,7 @@
 .\" Written by Tom Rhodes
 .\" This file is in the public domain.
 .\"
-.Dd January 26, 2012
+.Dd November 6, 2025
 .Dt CISS 4
 .Os
 .Sh NAME
@@ -87,9 +87,10 @@ might be solved by updating the firmware and/or setting the
 .Va hw.ciss.nop_message_heartbeat
 tunable to non-zero at boot time.
 .Sh HARDWARE
-Controllers supported by the
+The
 .Nm
-driver include:
+driver supports controllers implementing
+Common Interface for SCSI-3 Support Open Specification v1.04, including:
 .Pp
 .Bl -bullet -compact
 .It
@@ -145,6 +146,8 @@ HP Smart Array P430i
 .It
 HP Smart Array P431
 .It
+HP Smart Array P440ar
+.It
 HP Smart Array P530
 .It
 HP Smart Array P531
diff --git a/share/man/man4/dtrace_pid.4 b/share/man/man4/dtrace_pid.4
new file mode 100644
index 000000000000..1acbdd097ba8
--- /dev/null
+++ b/share/man/man4/dtrace_pid.4
@@ -0,0 +1,99 @@
+.\"
+.\" Copyright (c) 2025 Mateusz Piotrowski <0mp@FreeBSD.org>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd November 6, 2025
+.Dt DTRACE_PID 4
+.Os
+.Sh NAME
+.Nm dtrace_pid
+.Nd a DTrace provider for dynamic userspace tracing based on function boundary instrumentation
+.Sh SYNOPSIS
+.Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:entry
+.\" XXX: For some reason Op renders here in bold, so use literal square
+.\"      brackets instead.
+.Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&: Ns No \&[ Ns Ar offset Ns No \&]
+.Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:return
+.Sh DESCRIPTION
+The
+.Nm pid
+provider implements userspace dynamic tracing
+by instrumenting the entry and return of functions in userspace programs.
+Refer to
+.Xr dtrace_fbt 4
+for more details about function boundary instrumentation.
+.Pp
+The
+.Nm pid
+provider provides the following probes:
+.Bl -inset
+.It Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:entry
+instruments the entry of the
+.Ar function .
+.It Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&: Ns Op Ar offset
+instruments the instruction within the
+.Ar function
+located at
+.Ar offset
+bytes (expressed as a hexadecimal integer).
+.It Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:return
+instruments the return from the
+.Ar function .
+.El
+.Ss Probe Arguments
+The arguments of the entry probe
+.Pq Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:entry
+are the arguments of the traced function call.
+.Bl -column -offset indent "Entry Probe Argument" "Definition"
+.It Sy Entry Probe Argument Ta Sy Definition
+.It Ft uint64_t Fa arg0  Ta Function's first argument
+.It Ft uint64_t Fa arg1  Ta Function's second argument
+.It Ft uint64_t Fa arg2  Ta Function's third argument
+.It Fa ...      Ta ...
+.El
+.Pp
+The offset probes
+.Pq Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&: Ns Op Ar offset
+do not define any arguments.
+Use
+.Va uregs[]
+to inspect the registers.
+.Pp
+The arguments of the return probe
+.Pq Nm pid Ns Ar PID Ns Cm \&: Ns Ar module Ns Cm \&: Ns Ar function Ns Cm \&:return
+are the program counter and the function's return value.
+.Bl -column -offset indent "Return Probe Argument" "Definition"
+.It Sy Return Probe Argument Ta Sy Definition
+.It Ft uint64_t Fa arg0  Ta Program counter
+.It Ft uint64_t Fa arg1  Ta Function's return value
+.El
+.Pp
+Note that all probe arguments within the
+.Nm pid
+provider are of type
+.Ft uint64_t .
+.Sh SEE ALSO
+.Xr dtrace 1 ,
+.Xr dtrace_fbt 4 ,
+.Xr dtrace_kinst 4 ,
+.Xr elf 5 ,
+.Xr d 7 ,
+.Xr tracing 7
+.Rs
+.%A Brendan Gregg
+.%A Jim Mauro
+.%B DTrace: Dynamic Tracing in Oracle Solaris, Mac OS X and FreeBSD
+.%I Prentice Hall
+.%D 2011
+.%U https://www.brendangregg.com/dtracebook/
+.Re
+.Rs
+.%B The illumos Dynamic Tracing Guide
+.%O Chapter pid Provider
+.%D 2008
+.%U https://illumos.org/books/dtrace/chp-pid.html
+.Re
+.Sh AUTHORS
+This manual page was written by
+.An Mateusz Piotrowski Aq Mt 0mp@FreeBSD.org .
diff --git a/share/man/man4/geom_zero.4 b/share/man/man4/geom_zero.4
new file mode 100644
index 000000000000..8da09b1473c9
--- /dev/null
+++ b/share/man/man4/geom_zero.4
@@ -0,0 +1,174 @@
+.\"
+.\" Copyright (c) 2019 Greg White <gkwhite@gmail.com>. All rights reserved.
+.\" Copyright (c) 2025 Mateusz Piotrowski <0mp@FreeBSD.org>
+.\"
+.\" SPDX-License-Identifier: BSD-2-Clause
+.\"
+.Dd November 9, 2025
+.Dt GEOM_ZERO 4
+.Os
+.Sh NAME
+.Nm gzero ,
+.Nm geom_zero
+.Nd GEOM-based zero disk/block device
+.Sh SYNOPSIS
+.Cd "options GEOM_ZERO"
+.Pp
+In
+.Xr loader.conf 5
+or
+.Xr sysctl.conf 5 :
+.Cd kern.geom.zero.byte
+.Cd kern.geom.zero.clear
+.Sh DESCRIPTION
+.Nm
+is a
+.Xr GEOM 4
+device simulating a one-exabyte disk.
+It throws away any data written to it,
+and returns the value of
+.Va kern.geom.zero.byte
+for every byte read from it.
+.Pp
+.Nm
+differs from
+.Xr zero 4 ,
+which is a regular character device and has an infinite length,
+while
+.Pa /dev/gzero
+is a
+.Xr GEOM 4
+provider of large, but limited, size.
+.Pp
+Consult
+.Xr geom 8
+for instructions on how to use the supported commands of the
+.Xr GEOM 4
+.Nm ZERO
+class.
+.Pp
+.Nm
+is useful for benchmarking performance of GEOM and GEOM classes
+where compression of the data does not affect the results
+.Po blocks from
+.Pa /dev/gzero
+compress exceptionally well
+.Pc .
+Examples of such benchmarks include
+comparing the speed of two disk encryption algorithms and
+comparing a hardware versus software implementation
+of a single encryption algorithm.
+.Sh MIB VARIABLES
+The following variables are available as both
+.Xr sysctl 8
+variables and
+.Xr loader 8
+tunables:
+.Bl -tag -width "kern.geom.zero.clear"
+.It Va kern.geom.zero.byte
+This variable sets the fill byte of the
+.Nm
+device.
+Default:
+.Ql 0 .
+.It Va kern.geom.zero.clear
+This variable controls the clearing of the read data buffer.
+If set to
+.Ql 0 ,
+.Nm
+will not copy any data into the read data buffers
+and just return the read data buffers as they are without modifying them.
+In particular, it will not not fill the read buffer with the value of
+.Va kern.geom.zero.byte .
+This is useful for read benchmarking to reduce the measurement noise
+caused by extra memory initialization.
+Default:
+.Ql 1 .
+.El
+.Sh FILES
+.Bl -tag -width /dev/gzero
+.It Pa /dev/gzero
+The
+.Nm
+device.
+.El
+.Sh EXAMPLES
+Create the
+.Pa /dev/gzero
+device by loading the
+.Nm geom_zero
+kernel module:
+.Bd -literal -offset indent
+# geom zero load
+.Ed
+.Pp
+Show information about the
+.Nm
+device:
+.Bd -literal -offset indent
+# geom zero list
+Geom name: gzero
+Providers:
+1. Name: gzero
+   Mediasize: 1152921504606846976 (1.0E)
+   Sectorsize: 512
+   Mode: r0w0egzero0
+.Ed
+.Pp
+Set the fill byte of the
+.Nm
+device to 70
+.Po decimal for letter
+.Dq F
+in
+.Xr ascii 7
+.Pc :
+.Bd -literal -offset indent
+# sysctl kern.geom.zero.byte=70
+kern.geom.zero.byte: 0 -> 70
+# head -c 1 /dev/gzero
+F
+.Ed
+.Pp
+Benchmark read and write throughput of
+.Xr geli 8 Ap s
+default encryption algorithm with a 4-KiB sector size:
+.Bd -literal -offset indent
+# geom zero load
+# geli onetime -s 4096 gzero
+# sysctl kern.geom.zero.clear=0
+# dd if=/dev/gzero.eli of=/dev/zero bs=4k count=$((1024 * 256))
+262144+0 records in
+262144+0 records out
+1073741824 bytes transferred in 1.258195 secs (853398307 bytes/sec)
+# dd if=/dev/zero of=/dev/gzero.eli bs=4k count=$((1024 * 256))
+262144+0 records in
+262144+0 records out
+1073741824 bytes transferred in 1.663118 secs (645619658 bytes/sec)
+.Ed
+.Sh SEE ALSO
+.Xr GEOM 4 ,
+.Xr zero 4 ,
+.Xr geom 8 ,
+.Xr sysctl 8 ,
+.Xr bio 9
+.Sh HISTORY
+A
+.Nm
+device first appeared in
+.Fx 6 .
+.Sh AUTHORS
+.An -nosplit
+The
+.Nm
+device was written by
+.An Paweł Jakub Dawidek Aq Mt pjd@FreeBSD.org .
+.Pp
+The
+.Nm
+manual page was originally written by
+.An Greg White Aq Mt gkwhite@gmail.com
+and rewritten by
+.An Mateusz Piotrowski Aq Mt 0mp@FreeBSD.org
+before landing in
+.Fx .
diff --git a/share/man/man4/mpr.4 b/share/man/man4/mpr.4
index 8de46e4f9272..a88b99ae007b 100644
--- a/share/man/man4/mpr.4
+++ b/share/man/man4/mpr.4
@@ -103,8 +103,6 @@ Broadcom Ltd./Avago Tech (LSI) SAS 3808 (8 Port SAS/PCIe)
 .It
 Broadcom Ltd./Avago Tech (LSI) SAS 3816 (16 Port SAS/PCIe)
 .It
-Broadcom Ltd./Avago Tech (LSI) SAS 3908 (8 Port SAS/PCIe)
-.It
 Broadcom Ltd./Avago Tech (LSI) SAS 3916 (16 Port SAS/PCIe)
 .El
 .Sh CONFIGURATION
diff --git a/share/man/man4/safe.4 b/share/man/man4/safe.4
index 89375d058bf7..914b2dd0dd1c 100644
--- a/share/man/man4/safe.4
+++ b/share/man/man4/safe.4
@@ -25,7 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd November 22, 2024
+.Dd October 31, 2025
 .Dt SAFE 4
 .Os
 .Sh NAME
@@ -57,6 +57,11 @@ In
 .Cd hw.safe.rngbufsize
 .Cd hw.safe.rngmaxalarm
 .Ed
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is deprecated and is scheduled for removal in
+.Fx 16.0 .
 .Sh DESCRIPTION
 The
 .Nm
@@ -128,5 +133,14 @@ packet processing.
 .Xr random 4 ,
 .Xr crypto 7 ,
 .Xr crypto 9
+.Sh HISTORY
+The
+.Nm
+driver first appeared in
+.Fx 5.2 .
+It is deprecated in
+.Fx 15.0
+and removed in
+.Fx 16.0 .
 .Sh BUGS
 Public key support is not implemented.
diff --git a/share/man/man4/zero.4 b/share/man/man4/zero.4
index f1cd52d455d1..85651d53d342 100644
--- a/share/man/man4/zero.4
+++ b/share/man/man4/zero.4
@@ -29,7 +29,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd April 7, 1996
+.Dd November 9, 2025
 .Dt ZERO 4
 .Os
 .Sh NAME
@@ -48,6 +48,7 @@ supply of null bytes when read.
 .El
 .Sh SEE ALSO
 .Xr full 4 ,
+.Xr gzero 4 ,
 .Xr null 4
 .Sh HISTORY
 A