diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile
index fe1d285aec96..752ae9f165ca 100644
--- a/share/man/man4/Makefile
+++ b/share/man/man4/Makefile
@@ -1,1142 +1,1144 @@
 .include <src.opts.mk>
 
 MANGROUPS=	MAN
 MANPACKAGE=	kernel-man
 
 # If you add a new file here, please consider adding an entry to the
 # hardware notes template (website/archetypes/release/hardware.adoc in
 # the doc repository); otherwise the automatically generated hardware
 # notes will not include your driver.
 
 # If you enable a driver for a different architecture, please remember
 # to update the arch specifier in the document title of the manual.
 
 MAN=	aac.4 \
 	aacraid.4 \
 	acpi.4 \
 	${_acpi_asus.4} \
 	${_acpi_asus_wmi.4} \
 	${_acpi_dock.4} \
 	${_acpi_fujitsu.4} \
 	${_acpi_hp.4} \
 	${_acpi_ibm.4} \
 	${_acpi_panasonic.4} \
 	${_acpi_rapidstart.4} \
 	${_acpi_sony.4} \
 	acpi_ged.4 \
 	acpi_thermal.4 \
 	acpi_battery.4 \
 	${_acpi_toshiba.4} \
 	acpi_video.4 \
 	${_acpi_wmi.4} \
 	ada.4 \
 	adm6996fc.4 \
 	ads111x.4 \
 	ae.4 \
 	${_aesni.4} \
 	age.4 \
 	agp.4 \
 	ahc.4 \
 	ahci.4 \
 	ahd.4 \
 	${_aibs.4} \
 	aio.4 \
 	alc.4 \
 	ale.4 \
 	alpm.4 \
 	altq.4 \
 	amdpm.4 \
 	${_amdsbwd.4} \
 	${_amdsmb.4} \
 	${_amdsmn.4} \
 	${_amdtemp.4} \
 	${_bxe.4} \
 	${_aout.4} \
 	${_apic.4} \
 	arcmsr.4 \
 	arswitch.4 \
 	${_asmc.4} \
 	at45d.4 \
 	ata.4 \
 	ath.4 \
 	ath_hal.4 \
 	atkbd.4 \
 	atkbdc.4 \
 	${_atopcase.4} \
 	atp.4 \
 	${_atrtc.4} \
 	${_attimer.4} \
 	audit.4 \
 	auditpipe.4 \
 	aue.4 \
 	${_aw_gpio.4} \
 	${_aw_mmc.4} \
 	${_aw_rtc.4} \
 	${_aw_sid.4} \
 	${_aw_spi.4} \
 	${_aw_syscon.4} \
 	axe.4 \
 	axge.4 \
 	axp.4 \
 	bce.4 \
 	bcm5974.4 \
 	bcma.4 \
 	bfe.4 \
 	bge.4 \
 	${_bhyve.4} \
 	bhnd.4 \
 	bhnd_chipc.4 \
 	bhnd_pmu.4 \
 	bhndb.4 \
 	bhndb_pci.4 \
 	blackhole.4 \
 	bnxt.4 \
 	boottrace.4 \
 	bpf.4 \
 	bridge.4 \
 	bwi.4 \
 	bwn.4 \
 	${_bytgpio.4} \
 	capsicum.4 \
 	cardbus.4 \
 	carp.4 \
 	cas.4 \
 	cc_cdg.4 \
 	cc_chd.4 \
 	cc_cubic.4 \
 	cc_dctcp.4 \
 	cc_hd.4 \
 	cc_htcp.4 \
 	cc_newreno.4 \
 	cc_vegas.4 \
 	${_ccd.4} \
 	ccr.4 \
 	cd9660.4 \
 	cd.4 \
 	cdce.4 \
 	cdceem.4 \
 	cfi.4 \
 	cfumass.4 \
 	${_cgem.4} \
 	ch.4 \
 	chromebook_platform.4 \
 	${_chvgpio.4} \
 	ciss.4 \
 	${_coretemp.4} \
 	cp2112.4 \
 	${_cpuctl.4} \
 	cpufreq.4 \
 	crypto.4 \
 	ctl.4 \
 	cue.4 \
 	cxgb.4 \
 	cxgbe.4 \
 	cxgbev.4 \
 	cyapa.4 \
 	da.4 \
 	dc.4 \
 	dcons.4 \
 	dcons_crom.4 \
 	ddb.4 \
 	devctl.4 \
 	devfs.4 \
 	disc.4 \
 	disk.4 \
 	divert.4 \
 	${_dpms.4} \
 	ds1307.4 \
 	ds3231.4 \
 	${_dtrace_provs} \
 	dummymbuf.4 \
 	dummynet.4 \
 	edsc.4 \
 	ehci.4 \
 	em.4 \
 	ena.4 \
 	enc.4 \
 	enic.4 \
 	epair.4 \
 	est.4 \
 	et.4 \
 	etherswitch.4 \
 	eventtimers.4 \
 	exca.4 \
 	ext2fs.4 \
 	e6000sw.4 \
 	e6060sw.4 \
 	fd.4 \
 	fdc.4 \
 	fdescfs.4 \
 	fdt.4 \
 	fdt_pinctrl.4 \
 	fdtbus.4 \
 	ffclock.4 \
 	ffs.4 \
 	filemon.4 \
 	firewire.4 \
 	${_ftgpio.4} \
 	${_ftwd.4} \
 	full.4 \
 	fusefs.4 \
 	fwe.4 \
 	fwip.4 \
 	fwohci.4 \
 	fxp.4 \
 	gdb.4 \
 	gem.4 \
 	genet.4 \
 	genetlink.4 \
 	geom.4 \
 	geom_linux_lvm.4 \
 	geom_uzip.4 \
+	geom_zero.4 \
 	gif.4 \
 	${_gve.4} \
 	gpio.4 \
 	gpioiic.4 \
 	gpiokeys.4 \
 	gpioled.4 \
 	gpioths.4 \
 	gre.4 \
 	h_ertt.4 \
 	hconf.4 \
 	hcons.4 \
 	hgame.4 \
 	hidbus.4 \
 	hidquirk.4 \
 	hidraw.4 \
 	hkbd.4 \
 	hms.4 \
 	hmt.4 \
 	hpen.4 \
 	hpet.4 \
 	${_hpt27xx.4} \
 	${_hptiop.4} \
 	${_hptmv.4} \
 	${_hptnr.4} \
 	${_hptrr.4} \
 	hsctrl.4 \
 	htu21.4 \
 	${_hv_kvp.4} \
 	${_hv_netvsc.4} \
 	${_hv_storvsc.4} \
 	${_hv_utils.4} \
 	${_hv_vmbus.4} \
 	${_hv_vss.4} \
 	hwpmc.4 \
 	${_hwt.4} \
 	${_hwpstate_intel.4} \
 	i2ctinyusb.4 \
 	iavf.4 \
 	ice.4 \
 	ichsmb.4 \
 	${_ichwd.4} \
 	icmp.4 \
 	icmp6.4 \
 	ida.4 \
 	ietp.4 \
 	if_ipsec.4 \
 	iflib.4 \
 	ifmib.4 \
 	ig4.4 \
 	igmp.4 \
 	iic.4 \
 	iic_gpiomux.4 \
 	iicbb.4 \
 	iicbus.4 \
 	iichid.4 \
 	iicmux.4 \
 	iicsmb.4 \
 	${_igc.4} \
 	${_imcsmb.4} \
 	inet.4 \
 	inet6.4 \
 	intpm.4 \
 	intro.4 \
 	${_io.4} \
 	${_ioat.4} \
 	ip.4 \
 	ip17x.4 \
 	ip6.4 \
 	ipfirewall.4 \
 	ipheth.4 \
 	${_ipmi.4} \
 	ips.4 \
 	ipsec.4 \
 	ipw.4 \
 	ipwfw.4 \
 	isci.4 \
 	isl.4 \
 	ismt.4 \
 	isp.4 \
 	ispfw.4 \
 	${_itwd.4} \
 	iwi.4 \
 	iwifw.4 \
 	iwm.4 \
 	iwmfw.4 \
 	iwn.4 \
 	iwnfw.4 \
 	iwlwifi.4 \
 	iwlwififw.4 \
 	${_iwx.4} \
 	ix.4 \
 	ixl.4 \
 	jedec_dimm.4 \
 	jme.4 \
 	kbdmux.4 \
 	kcov.4 \
 	keyboard.4 \
 	kld.4 \
 	ksyms.4 \
 	ksz8995ma.4 \
 	ktls.4 \
 	ktr.4 \
 	kue.4 \
 	${_kvmclock.4} \
 	lagg.4 \
 	le.4 \
 	led.4 \
 	lge.4 \
 	lindebugfs.4 \
 	linprocfs.4 \
 	linsysfs.4 \
 	${_linux.4} \
 	linuxkpi.4 \
 	linuxkpi_wlan.4 \
 	liquidio.4 \
 	lm75.4 \
 	lo.4 \
 	lp.4 \
 	lpbb.4 \
 	lpt.4 \
 	ltc430x.4 \
 	mac.4 \
 	mac_biba.4 \
 	mac_bsdextended.4 \
 	mac_ddb.4 \
 	mac_do.4 \
 	mac_ifoff.4 \
 	mac_ipacl.4 \
 	mac_lomac.4 \
 	mac_mls.4 \
 	mac_none.4 \
 	mac_ntpd.4 \
 	mac_partition.4 \
 	mac_portacl.4 \
 	mac_priority.4 \
 	mac_seeotheruids.4 \
 	mac_stub.4 \
 	mac_test.4 \
 	malo.4 \
 	max44009.4 \
 	md.4 \
 	mdio.4 \
 	me.4 \
 	mem.4 \
 	mfi.4 \
 	${_mgb.4} \
 	miibus.4 \
 	mld.4 \
 	mlx.4 \
 	mlx4en.4 \
 	mlx5en.4 \
 	mmc.4 \
 	mmcsd.4 \
 	mod_cc.4 \
 	mos.4 \
 	mouse.4 \
 	mpi3mr.4 \
 	mpr.4 \
 	mps.4 \
 	mpt.4 \
 	mqueuefs.4 \
 	mrsas.4 \
 	msdosfs.4 \
 	msk.4 \
 	mtio.4 \
 	mtkswitch.4 \
 	multicast.4 \
 	muge.4 \
 	mvs.4 \
 	mwl.4 \
 	mwlfw.4 \
 	mx25l.4 \
 	mxge.4 \
 	my.4 \
 	net80211.4 \
 	netdump.4 \
 	netfpga10g_nf10bmac.4 \
 	netgdb.4 \
 	netgraph.4 \
 	netintro.4 \
 	netlink.4 \
 	netmap.4 \
 	${_nfe.4} \
 	nfslockd.4 \
 	${_nfsmb.4} \
 	ng_async.4 \
 	ng_bpf.4 \
 	ng_bridge.4 \
 	ng_btsocket.4 \
 	ng_car.4 \
 	ng_checksum.4 \
 	ng_cisco.4 \
 	ng_deflate.4 \
 	ng_device.4 \
 	nge.4 \
 	ng_echo.4 \
 	ng_eiface.4 \
 	ng_etf.4 \
 	ng_ether.4 \
 	ng_ether_echo.4 \
 	ng_frame_relay.4 \
 	ng_gif.4 \
 	ng_gif_demux.4 \
 	ng_hci.4 \
 	ng_hole.4 \
 	ng_hub.4 \
 	ng_iface.4 \
 	ng_ipfw.4 \
 	ng_ip_input.4 \
 	ng_ksocket.4 \
 	ng_l2cap.4 \
 	ng_l2tp.4 \
 	ng_lmi.4 \
 	ng_macfilter.4 \
 	ng_mppc.4 \
 	ng_nat.4 \
 	ng_netflow.4 \
 	ng_one2many.4 \
 	ng_patch.4 \
 	ng_pipe.4 \
 	ng_ppp.4 \
 	ng_pppoe.4 \
 	ng_pptpgre.4 \
 	ng_pred1.4 \
 	ng_rfc1490.4 \
 	ng_socket.4 \
 	ng_source.4 \
 	ng_split.4 \
 	ng_tag.4 \
 	ng_tcpmss.4 \
 	ng_tee.4 \
 	ng_tty.4 \
 	ng_ubt.4 \
 	ng_UI.4 \
 	ng_vjc.4 \
 	ng_vlan.4 \
 	ng_vlan_rotate.4 \
 	nmdm.4 \
 	${_ntb.4} \
 	${_ntb_hw_amd.4} \
 	${_ntb_hw_intel.4} \
 	${_ntb_hw_plx.4} \
 	${_ntb_transport.4} \
 	${_nda.4} \
 	${_if_ntb.4} \
 	null.4 \
 	nullfs.4 \
 	numa.4 \
 	nvd.4 \
 	${_nvdimm.4} \
 	nvme.4 \
 	nvmf.4 \
 	nvmf_tcp.4 \
 	nvmft.4 \
 	${_nvram.4} \
 	oce.4 \
 	ocs_fc.4\
 	ohci.4 \
 	openfirm.4 \
 	orm.4 \
 	${_ossl.4} \
 	ow.4 \
 	ow_temp.4 \
 	owc.4 \
 	ovpn.4 \
 	${_padlock.4} \
 	p9fs.4 \
 	pass.4 \
 	pca954x.4 \
 	pccard.4 \
 	pccbb.4 \
 	pcf.4 \
 	pcf8574.4 \
 	pcf8591.4 \
 	${_pchtherm.4} \
 	pci.4 \
 	pcib.4 \
 	pcic.4 \
 	pcm.4 \
 	${_pf.4} \
 	${_pflog.4} \
 	${_pflow.4} \
 	${_pfsync.4} \
 	pim.4 \
 	pms.4 \
 	polling.4 \
 	ppbus.4 \
 	ppc.4 \
 	ppi.4 \
 	procdesc.4 \
 	procfs.4 \
 	proto.4 \
 	ps4dshock.4 \
 	psm.4 \
 	pst.4 \
 	pt.4 \
 	ptnet.4 \
 	pts.4 \
 	pty.4 \
 	puc.4 \
 	pwmc.4 \
 	${_pvscsi.4} \
 	${_qat.4} \
 	${_qat_c2xxx.4} \
 	${_qlxge.4} \
 	${_qlxgb.4} \
 	${_qlxgbe.4} \
 	${_qlnxe.4} \
 	ral.4 \
 	random.4 \
 	rctl.4 \
 	re.4 \
 	rgephy.4 \
 	rights.4 \
 	rl.4 \
 	rndtest.4 \
 	route.4 \
 	rtnetlink.4 \
 	rtsx.4 \
 	rtw88.4 \
 	rtw89.4 \
 	rtwn.4 \
 	rtwnfw.4 \
 	rtwn_pci.4 \
 	rue.4 \
 	sa.4 \
 	safe.4 \
 	safexcel.4 \
 	sbp.4 \
 	sbp_targ.4 \
 	scc.4 \
 	sched_4bsd.4 \
 	sched_ule.4 \
 	screen.4 \
 	scsi.4 \
 	sctp.4 \
 	sdhci.4 \
 	sem.4 \
 	send.4 \
 	ses.4 \
 	${_sfxge.4} \
 	sg.4 \
 	sge.4 \
 	siba.4 \
 	siftr.4 \
 	siis.4 \
 	simplebus.4 \
 	sis.4 \
 	sk.4 \
 	${_smartpqi.4} \
 	smb.4 \
 	smbfs.4 \
 	smbios.4 \
 	smbus.4 \
 	smp.4 \
 	smsc.4 \
 	snd_als4000.4 \
 	snd_atiixp.4 \
 	snd_cmi.4 \
 	snd_cs4281.4 \
 	snd_csa.4 \
 	snd_dummy.4 \
 	snd_emu10k1.4 \
 	snd_emu10kx.4 \
 	snd_envy24.4 \
 	snd_envy24ht.4 \
 	snd_es137x.4 \
 	snd_fm801.4 \
 	snd_hda.4 \
 	snd_hdsp.4 \
 	snd_hdspe.4 \
 	snd_ich.4 \
 	snd_maestro3.4 \
 	snd_neomagic.4 \
 	snd_solo.4 \
 	snd_spicds.4 \
 	snd_t4dwave.4 \
 	snd_uaudio.4 \
 	snd_via8233.4 \
 	snd_via82c686.4 \
 	snd_vibes.4 \
 	sndstat.4 \
 	snp.4 \
 	spigen.4 \
 	${_spkr.4} \
 	splash.4 \
 	ste.4 \
 	stf.4 \
 	stge.4 \
 	${_sume.4} \
 	${_superio.4} \
 	sym.4 \
 	syncache.4 \
 	syncer.4 \
 	syscons.4 \
 	sysmouse.4 \
 	tap.4 \
 	tarfs.4 \
 	targ.4 \
 	tcp.4 \
 	tcp_bbr.4 \
 	tcp_rack.4 \
 	tdfx.4 \
 	termios.4 \
 	textdump.4 \
 	thunderbolt.4 \
 	ti.4 \
 	timecounters.4 \
 	tmpfs.4 \
 	${_tpm.4} \
 	tslog.4 \
 	tty.4 \
 	tun.4 \
 	tws.4 \
 	u2f.4 \
 	udp.4 \
 	udplite.4 \
 	${_ufshci.4} \
 	unionfs.4 \
 	ure.4 \
 	vale.4 \
 	vga.4 \
 	vge.4 \
 	viapm.4 \
 	${_viawd.4} \
 	virtio.4 \
 	virtio_balloon.4 \
 	virtio_blk.4 \
 	virtio_console.4 \
 	virtio_gpu.4 \
 	virtio_random.4 \
 	virtio_scsi.4 \
 	${_vmci.4} \
 	vkbd.4 \
 	vlan.4 \
 	vxlan.4 \
 	${_vmd.4} \
 	${_vmm.4} \
 	${_vmx.4} \
 	vr.4 \
 	vt.4 \
 	vte.4 \
 	vtnet.4 \
 	watchdog.4 \
 	${_wbwd.4} \
 	${_wdatwd.4} \
 	wg.4 \
 	witness.4 \
 	wlan.4 \
 	wlan_acl.4 \
 	wlan_amrr.4 \
 	wlan_ccmp.4 \
 	wlan_gcmp.4 \
 	wlan_tkip.4 \
 	wlan_wep.4 \
 	wlan_xauth.4 \
 	wmt.4 \
 	${_wpi.4} \
 	wsp.4 \
 	xb360gp.4 \
 	${_xen.4} \
 	xhci.4 \
 	xl.4 \
 	${_xnb.4} \
 	xpt.4 \
 	zero.4
 
 MLINKS=	ads111x.4 ads1013.4 \
 	ads111x.4 ads1014.4 \
 	ads111x.4 ads1015.4 \
 	ads111x.4 ads1113.4 \
 	ads111x.4 ads1114.4 \
 	ads111x.4 ads1115.4
 MLINKS+=ae.4 if_ae.4
 MLINKS+=age.4 if_age.4
 MLINKS+=agp.4 agpgart.4
 MLINKS+=alc.4 if_alc.4
 MLINKS+=ale.4 if_ale.4
 MLINKS+=altq.4 ALTQ.4
 MLINKS+=ath.4 if_ath.4
 MLINKS+=aue.4 if_aue.4
 MLINKS+=axe.4 if_axe.4
 MLINKS+=bce.4 if_bce.4
 MLINKS+=bfe.4 if_bfe.4
 MLINKS+=bge.4 if_bge.4
 MLINKS+=bnxt.4 if_bnxt.4
 MLINKS+=bridge.4 if_bridge.4
 MLINKS+=bwi.4 if_bwi.4
 MLINKS+=bwn.4 if_bwn.4
 MLINKS+=${_bxe.4} ${_if_bxe.4}
 MLINKS+=cas.4 if_cas.4
 MLINKS+=cdce.4 if_cdce.4
 MLINKS+=cfi.4 cfid.4
 MLINKS+=crypto.4 cryptodev.4
 MLINKS+=cue.4 if_cue.4
 MLINKS+=cxgb.4 if_cxgb.4
 MLINKS+=cxgbe.4 if_cxgbe.4 \
 	cxgbe.4 vcxgbe.4 \
 	cxgbe.4 if_vcxgbe.4 \
 	cxgbe.4 cxl.4 \
 	cxgbe.4 if_cxl.4 \
 	cxgbe.4 vcxl.4 \
 	cxgbe.4 if_vcxl.4 \
 	cxgbe.4 cc.4 \
 	cxgbe.4 if_cc.4 \
 	cxgbe.4 vcc.4 \
 	cxgbe.4 if_vcc.4
 MLINKS+=cxgbev.4 if_cxgbev.4 \
 	cxgbev.4 cxlv.4 \
 	cxgbev.4 if_cxlv.4 \
 	cxgbev.4 ccv.4 \
 	cxgbev.4 if_ccv.4
 MLINKS+=dc.4 if_dc.4
 MLINKS+=disc.4 if_disc.4
 MLINKS+=edsc.4 if_edsc.4
 MLINKS+=em.4 if_em.4 \
 	em.4 igb.4 \
 	em.4 if_igb.4 \
 	em.4 lem.4 \
 	em.4 if_lem.4
 MLINKS+=enc.4 if_enc.4
 MLINKS+=epair.4 if_epair.4
 MLINKS+=et.4 if_et.4
 MLINKS+=ext2fs.4 ext4fs.4
 MLINKS+=fd.4 stderr.4 \
 	fd.4 stdin.4 \
 	fd.4 stdout.4
 MLINKS+=fdt.4 FDT.4
 MLINKS+=firewire.4 ieee1394.4
 MLINKS+=fwe.4 if_fwe.4
 MLINKS+=fwip.4 if_fwip.4
 MLINKS+=fxp.4 if_fxp.4
 MLINKS+=gem.4 if_gem.4
 MLINKS+=genet.4 if_genet.4
 MLINKS+=geom.4 GEOM.4
 MLINKS+=gif.4 if_gif.4
 MLINKS+=gpio.4 gpiobus.4
 MLINKS+=gpioths.4 dht11.4
 MLINKS+=gpioths.4 dht22.4
 MLINKS+=gre.4 if_gre.4
 MLINKS+=hpet.4 acpi_hpet.4
 MLINKS+=${_hv_netvsc.4} ${_hn.4} \
 	${_hv_netvsc.4} ${_if_hn.4}
 MLINKS+=${_hptrr.4} ${_rr232x.4}
 MLINKS+=${_attimer.4} ${_i8254.4}
 MLINKS+=ip.4 rawip.4
 MLINKS+=ipfirewall.4 ipaccounting.4 \
 	ipfirewall.4 ipacct.4 \
 	ipfirewall.4 ipfw.4
 MLINKS+=ice.4 if_ice.4
 MLINKS+=ipheth.4 if_ipheth.4
 MLINKS+=ipw.4 if_ipw.4
 MLINKS+=iwi.4 if_iwi.4
 MLINKS+=iwlwifi.4 if_iwlwifi.4
 MLINKS+=iwm.4 if_iwm.4
 MLINKS+=iwn.4 if_iwn.4
 MLINKS+=ix.4 if_ix.4
 MLINKS+=ix.4 if_ixgbe.4
 MLINKS+=ix.4 ixgbe.4
 MLINKS+=ixl.4 if_ixl.4
 MLINKS+=iavf.4 if_iavf.4
 MLINKS+=jme.4 if_jme.4
 MLINKS+=kue.4 if_kue.4
 MLINKS+=lagg.4 trunk.4
 MLINKS+=lagg.4 if_lagg.4
 MLINKS+=le.4 if_le.4
 MLINKS+=lge.4 if_lge.4
 MLINKS+=lo.4 loop.4
 MLINKS+=lp.4 plip.4
 MLINKS+=malo.4 if_malo.4
 MLINKS+=mem.4 kmem.4
 MLINKS+=mfi.4 mfi_linux.4 \
 	mfi.4 mfip.4
 MLINKS+=mlx5en.4 mce.4
 MLINKS+=mos.4 if_mos.4
 MLINKS+=msdosfs.4 msdos.4
 MLINKS+=msk.4 if_msk.4
 MLINKS+=mwl.4 if_mwl.4
 MLINKS+=mxge.4 if_mxge.4
 MLINKS+=my.4 if_my.4
 MLINKS+=netfpga10g_nf10bmac.4 if_nf10bmac.4
 MLINKS+=netintro.4 net.4 \
 	netintro.4 networking.4
 MLINKS+=${_nfe.4} ${_if_nfe.4}
 MLINKS+=nge.4 if_nge.4
 MLINKS+=openfirm.4 openfirmware.4
 MLINKS+=ow.4 onewire.4
 MLINKS+=pccbb.4 cbb.4
 MLINKS+=pcm.4 snd.4 \
 	pcm.4 sound.4
 MLINKS+=pms.4 pmspcv.4
 MLINKS+=ptnet.4 if_ptnet.4
 MLINKS+=ral.4 if_ral.4
 MLINKS+=re.4 if_re.4
 MLINKS+=rl.4 if_rl.4
 MLINKS+=rtw88.4 if_rtw88.4
 MLINKS+=rtw89.4 if_rtw89.4
 MLINKS+=rtwn.4 if_rtwn.4
 MLINKS+=rue.4 if_rue.4
 MLINKS+=scsi.4 cam.4
 MLINKS+=scsi.4 scbus.4
 MLINKS+=scsi.4 SCSI.4
 MLINKS+=sge.4 if_sge.4
 MLINKS+=sis.4 if_sis.4
 MLINKS+=sk.4 if_sk.4
 MLINKS+=smp.4 SMP.4
 MLINKS+=smsc.4 if_smsc.4
 MLINKS+=snd_envy24.4 snd_ak452x.4
 MLINKS+=${_spkr.4} ${_speaker.4}
 MLINKS+=splash.4 screensaver.4
 MLINKS+=ste.4 if_ste.4
 MLINKS+=stf.4 if_stf.4
 MLINKS+=stge.4 if_stge.4
 MLINKS+=syncache.4 syncookies.4
 MLINKS+=syscons.4 sc.4
 MLINKS+=tap.4 if_tap.4 \
 	tap.4 vmnet.4 \
 	tap.4 if_vmnet.4
 MLINKS+=tdfx.4 tdfx_linux.4
 MLINKS+=ti.4 if_ti.4
 MLINKS+=tun.4 if_tun.4
 MLINKS+=ure.4 if_ure.4
 MLINKS+=vge.4 if_vge.4
 MLINKS+=vlan.4 if_vlan.4
 MLINKS+=vxlan.4 if_vxlan.4
 MLINKS+=${_vmx.4} ${_if_vmx.4}
 MLINKS+=vr.4 if_vr.4
 MLINKS+=vte.4 if_vte.4
 MLINKS+=vtnet.4 if_vtnet.4
 MLINKS+=watchdog.4 SW_WATCHDOG.4
 MLINKS+=wg.4 if_wg.4
 MLINKS+=wlan.4 wifi.4
 MLINKS+=${_wpi.4} ${_if_wpi.4}
 MLINKS+=xl.4 if_xl.4
 
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386"
 _acpi_asus.4=	acpi_asus.4
 _acpi_asus_wmi.4=	acpi_asus_wmi.4
 _acpi_dock.4=	acpi_dock.4
 _acpi_fujitsu.4=acpi_fujitsu.4
 _acpi_hp.4=	acpi_hp.4
 _acpi_ibm.4=	acpi_ibm.4
 _acpi_panasonic.4=acpi_panasonic.4
 _acpi_rapidstart.4=acpi_rapidstart.4
 _acpi_sony.4=	acpi_sony.4
 _acpi_toshiba.4=acpi_toshiba.4
 _acpi_wmi.4=	acpi_wmi.4
 _aesni.4=	aesni.4
 _aout.4=	aout.4
 _apic.4=	apic.4
 _atrtc.4=	atrtc.4
 _attimer.4=	attimer.4
 _aibs.4=	aibs.4
 _amdsbwd.4=	amdsbwd.4
 _amdsmb.4=	amdsmb.4
 _amdsmn.4=	amdsmn.4
 _amdtemp.4=	amdtemp.4
 _asmc.4=	asmc.4
 _atopcase.4=	atopcase.4
 _bxe.4=		bxe.4
 _bytgpio.4=	bytgpio.4
 _chvgpio.4=	chvgpio.4
 _coretemp.4=	coretemp.4
 _cpuctl.4=	cpuctl.4
 _dpms.4=	dpms.4
 _ftgpio.4=	ftgpio.4
 _ftwd.4=	ftwd.4
 _hn.4=		hn.4
 _hpt27xx.4=	hpt27xx.4
 _hptiop.4=	hptiop.4
 _hptmv.4=	hptmv.4
 _hptnr.4=	hptnr.4
 _hptrr.4=	hptrr.4
 _hv_kvp.4=	hv_kvp.4
 _hv_netvsc.4=	hv_netvsc.4
 _hv_storvsc.4=	hv_storvsc.4
 _hv_utils.4=	hv_utils.4
 _hv_vmbus.4=	hv_vmbus.4
 _hv_vss.4=	hv_vss.4
 _hwpstate_intel.4=	hwpstate_intel.4
 _i8254.4=	i8254.4
 _ichwd.4=	ichwd.4
 _if_bxe.4=	if_bxe.4
 _if_hn.4=	if_hn.4
 _if_nfe.4=	if_nfe.4
 _if_urtw.4=	if_urtw.4
 _if_wpi.4=	if_wpi.4
 _igc.4=		igc.4
 _imcsmb.4=	imcsmb.4
 _io.4=		io.4
 _itwd.4=	itwd.4
 _kvmclock.4=	kvmclock.4
 _mgb.4=		mgb.4
 _nda.4=		nda.4
 _nfe.4=		nfe.4
 _nfsmb.4=	nfsmb.4
 _if_ntb.4=	if_ntb.4
 _ntb.4=		ntb.4
 _ntb_hw_amd.4=	ntb_hw_amd.4
 _ntb_hw_intel.4=	ntb_hw_intel.4
 _ntb_hw_plx.4=	ntb_hw_plx.4
 _ntb_transport.4=ntb_transport.4
 _nvram.4=	nvram.4
 _pchtherm.4=	pchtherm.4
 _qat.4=		qat.4
 _qat_c2xxx.4=	qat_c2xxx.4
 _rr232x.4=	rr232x.4
 _speaker.4=	speaker.4
 _spkr.4=	spkr.4
 _superio.4=	superio.4
 _tpm.4=		tpm.4
 _urtw.4=	urtw.4
 _viawd.4=	viawd.4
 _vmci.4=	vmci.4
 _vmd.4=		vmd.4
 _wbwd.4=	wbwd.4
 _wdatwd.4=	wdatwd.4
 _wpi.4=		wpi.4
 _xen.4=		xen.4
 _xnb.4=		xnb.4
 
 .endif
 
 .if ${MACHINE_CPUARCH} == "amd64"
 _ioat.4=	ioat.4
 _iwx.4=		iwx.4
 _nvdimm.4=	nvdimm.4
 _qlxge.4=	qlxge.4
 _qlxgb.4=	qlxgb.4
 _qlxgbe.4=	qlxgbe.4
 _qlnxe.4=	qlnxe.4
 _sfxge.4=	sfxge.4
 _smartpqi.4=	smartpqi.4
 _sume.4=	sume.4
 
 MLINKS+=iwx.4 if_iwx.4
 MLINKS+=qlxge.4 if_qlxge.4
 MLINKS+=qlxgb.4 if_qlxgb.4
 MLINKS+=qlxgbe.4 if_qlxgbe.4
 MLINKS+=qlnxe.4 if_qlnxe.4
 MLINKS+=sfxge.4 if_sfxge.4
 MLINKS+=sume.4 if_sume.4
 
 .if ${MK_BHYVE} != "no"
 _bhyve.4=	bhyve.4
 _vmm.4=		vmm.4
 .endif
 .endif
 
 .if ${MACHINE_CPUARCH} == "i386"
 _padlock.4=	padlock.4
 .endif
 
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "aarch64"
 _hwt.4=		hwt.4
 .if ${MACHINE_CPUARCH} == "amd64"
 MLINKS+=hwt.4	intel_pt.4
 .endif
 .if ${MACHINE_CPUARCH} == "aarch64"
 MLINKS+=hwt.4	coresight.4
 MLINKS+=hwt.4	spe.4
 .endif
 .endif
 
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "aarch64"
 _ufshci.4=	ufshci.4
 .endif
 
 .if ${MACHINE_CPUARCH} == "amd64" || ${MACHINE_CPUARCH} == "i386" || \
 	 ${MACHINE_CPUARCH} == "aarch64"
 _gve.4=		gve.4
 _if_vmx.4=	if_vmx.4
 _ipmi.4=	ipmi.4
 _linux.4=	linux.4
 _ossl.4=	ossl.4
 _pvscsi.4=	pvscsi.4
 _vmx.4=		vmx.4
 .endif
 
 .if ${MACHINE_CPUARCH} == "arm" || ${MACHINE_CPUARCH} == "aarch64" || \
 	 ${MACHINE_CPUARCH} == "riscv"
 _aw_gpio.4=	aw_gpio.4
 _aw_mmc.4=	aw_mmc.4
 _aw_rtc.4=	aw_rtc.4
 _aw_sid.4=	aw_sid.4
 _aw_spi.4=	aw_spi.4
 _aw_syscon.4=	aw_syscon.4
 _cgem.4=	cgem.4
 MLINKS+=cgem.4 if_cgem.4
 .endif
 
 .if empty(MAN_ARCH) || ${MAN_ARCH} == "all"
 __arches=	${:!/bin/sh -c "/bin/ls -d ${.CURDIR}/man4.*"!:E}
 .else
 __arches=	${MAN_ARCH}
 .endif
 .for __arch in ${__arches:O:u}
 .if exists(${.CURDIR}/man4.${__arch})
 SUBDIR+=	man4.${__arch}
 .endif
 .endfor
 
 .if ${MK_AUTOFS} != "no"
 MAN+=		autofs.4
 .endif
 
 .if ${MK_BLUETOOTH} != "no"
 MAN+=		ng_bluetooth.4
 .endif
 
 .if ${MK_CCD} != "no"
 _ccd.4=		ccd.4
 .endif
 
 .if ${MK_CDDL} != "no"
 _dtrace_provs=	dtrace_audit.4 \
 		dtrace_callout_execute.4 \
 		dtrace_dtrace.4 \
 		dtrace_fbt.4 \
 		dtrace_io.4 \
 		dtrace_ip.4 \
 		dtrace_kinst.4 \
 		dtrace_lockstat.4 \
 		dtrace_pid.4 \
 		dtrace_proc.4 \
 		dtrace_profile.4 \
 		dtrace_sched.4 \
 		dtrace_sctp.4 \
 		dtrace_tcp.4 \
 		dtrace_udp.4 \
 		dtrace_udplite.4 \
 		dtrace_vfs.4
 
 MLINKS+=	dtrace_audit.4 dtaudit.4
 .endif
 
 .if ${MK_EFI} != "no"
 MAN+=		efidev.4
 
 MLINKS+=	efidev.4 efirtc.4
 .endif
 
 .if ${MK_ISCSI} != "no"
 MAN+=		cfiscsi.4
 MAN+=		iscsi.4
 MAN+=		iser.4
 .endif
 
 .if ${MK_OFED} != "no"
 MAN+=		mlx4ib.4
 MAN+=		mlx5ib.4
 .endif
 
 .if ${MK_MLX5TOOL} != "no"
 MAN+=		mlx5io.4
 .endif
 
 .if ${MK_TESTS} != "no"
 MANGROUPS+=	TESTS
 ATF=            ${SRCTOP}/contrib/atf
 .PATH:          ${ATF}/doc
 TESTS=		atf-test-case.4
 TESTSPACKAGE=	tests
 .endif
 
 .if ${MK_PF} != "no"
 _pf.4=		pf.4
 _pflog.4=	pflog.4
 _pflow.4=	pflow.4
 _pfsync.4=	pfsync.4
 .endif
 
 .if ${MK_USB} != "no"
 MAN+=	\
 	mtw.4 \
 	otus.4 \
 	otusfw.4 \
 	rsu.4 \
 	rsufw.4 \
 	rtwn_usb.4 \
 	rum.4 \
 	run.4 \
 	runfw.4 \
 	u3g.4 \
 	uark.4 \
 	uart.4 \
 	uath.4 \
 	ubsa.4 \
 	ubser.4 \
 	ubtbcmfw.4 \
 	uchcom.4 \
 	ucom.4 \
 	ucycom.4 \
 	udav.4 \
 	udbc.4 \
 	udbp.4 \
 	udl.4 \
 	uep.4 \
 	ufoma.4 \
 	uftdi.4 \
 	ugen.4 \
 	ugold.4 \
 	uhci.4 \
 	uhid.4 \
 	uhso.4 \
 	uipaq.4 \
 	ukbd.4 \
 	uled.4 \
 	ulpt.4 \
 	umass.4 \
 	umb.4 \
 	umcs.4 \
 	umct.4 \
 	umodem.4 \
 	umoscom.4 \
 	ums.4 \
 	unix.4 \
 	upgt.4 \
 	uplcom.4 \
 	ural.4 \
 	urio.4 \
 	urndis.4 \
 	${_urtw.4} \
 	usb.4 \
 	usb_quirk.4 \
 	usb_template.4 \
 	usbhid.4 \
 	usfs.4 \
 	uslcom.4 \
 	uvisor.4 \
 	uvscom.4 \
 	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
 MLINKS+=rtwn_usb.4 if_rtwn_usb.4
 MLINKS+=rum.4 if_rum.4
 MLINKS+=run.4 if_run.4
 MLINKS+=u3g.4 u3gstub.4
 MLINKS+=uath.4 if_uath.4
 MLINKS+=udav.4 if_udav.4
 MLINKS+=upgt.4 if_upgt.4
 MLINKS+=ural.4 if_ural.4
 MLINKS+=urndis.4 if_urndis.4
 MLINKS+=${_urtw.4} ${_if_urtw.4}
 MLINKS+=zyd.4 if_zyd.4
 .endif
 
 .include <bsd.prog.mk>
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/zero.4 b/share/man/man4/zero.4
index f1cd52d455d1..85651d53d342 100644
--- a/share/man/man4/zero.4
+++ b/share/man/man4/zero.4
@@ -1,56 +1,57 @@
 .\" Copyright (c) 1996
 .\"	Mike Pritchard <mpp@FreeBSD.org>.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\" 3. All advertising materials mentioning features or use of this software
 .\"    must display the following acknowledgement:
 .\"	This product includes software developed by Mike Pritchard and
 .\"	contributors.
 .\" 4. Neither the name of the author nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" 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
 .Nm zero
 .Nd the zero device
 .Sh DESCRIPTION
 The
 .Nm
 device accepts and reads data as any ordinary (and willing)
 file,
 but throws away any data written to it, and returns an endless
 supply of null bytes when read.
 .Sh FILES
 .Bl -tag -width /dev/zero
 .It Pa /dev/zero
 .El
 .Sh SEE ALSO
 .Xr full 4 ,
+.Xr gzero 4 ,
 .Xr null 4
 .Sh HISTORY
 A
 .Nm
 device appeared in
 .Bx 4.4 .