Changes in NOTES

754d2c69f3589cdd0bc4649d9e85ecd59935d9d3 - NOTES: Multiple schedulers can be compiled in at once

Thu, 24 Sep 2026 18:23:05 +0200

NOTES: Multiple schedulers can be compiled in at onceMention that ULE is the default scheduler when multiple ones arecompiled in and how the tunable 'kern.sched.name' can be used to selectanother one.While here, regroup SCHED_ULE and SCHED_4BSD, as they control if therespective scheduler instances are compiled in, putting SCHED_STATSaside.Reviewed by: mchooFixes: 75a66a92c92f ("- Add an option to compile in SCHED_STATS. ...")Fixes: 1322760fd127 ("sys: enable both SCHED_ULE and SCHED_4BSD for some configs")MFC after: 3 daysSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D60014 List of files: /freebsd/sys/conf/NOTES

d972d832f580c307cdfd87d563a382f40877dd10 - NOTES: IPI_PREEMPTION: Fix documentation, applies to all architectures

Thu, 24 Sep 2026 18:04:35 +0200

NOTES: IPI_PREEMPTION: Fix documentation, applies to all architecturesMove its description into 'sys/conf/NOTES' and update it to match reality.Reviewed by: scheduler (mchoo)MFC after: 3 daysSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D60013 List of files: /freebsd/sys/conf/NOTES

61ce73643f22f6f8273701eb978faa246bbca27d - NOTES: SMP: Move PREEMPTION out of the debugging options section

Thu, 24 Sep 2026 18:00:32 +0200

NOTES: SMP: Move PREEMPTION out of the debugging options sectionIt has been activated by default for more than 20 years.Reviewed by: mchoo, srcmgr (imp)Fixes: 444ba945136b ("Switch the default scheduler to 4BSD...")MFC after: 3 daysSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D60012 List of files: /freebsd/sys/conf/NOTES

e376d28ce86135a12e3a9b31ca31fe80c59611be - LINT: enable KLD_DEBUG

Mon, 21 Sep 2026 11:51:26 +0200

LINT: enable KLD_DEBUGWithout this, no kernel config contained this option so it was easy tobreak.Sponsored by: Innovate UK List of files: /freebsd/sys/conf/NOTES

b9cee186b83ecb531a6d4b4421230acfd5314c16 - ice: Add a failure injection facility

Wed, 19 Aug 2026 02:33:33 +0200

ice: Add a failure injection facilityAdd compile-time optional, non-sleeping fail points around every VFcreation resource boundary, before VF VSI reconstruction, and in theGET_STATS validation path.Provide an ICE-wide wrapper and device selector so other driversubsystems can add scoped points without duplicating the failpointplumbing. Keep the current SR-IOV points and VF selector in an iovchild namespace.Compile the facility only with options DRIVER_FAILPOINTS. This sharedoption avoids a separate kernel option for every driver that providestest-only injection hooks. Ordinary kernels contain no ICE failpointobjects or sysctl nodes. Require an exact PF device name andoptionally a VF index before any point can fire. This prevents a staletest setting from affecting another PF.The hooks exposed two reset-lifetime defects while validating theexisting SR-IOV review series. A PF reset could discard a firmware VSIbefore teardown, and a rebuilt sibling could leave stale switch-filterstate after IOV destroy.Tested on an E810-XXV with INVARIANTS and WITNESS. All twelve creationcheckpoints rolled back and permitted immediate resource reuse. Forcedreconstruction and malformed GET_STATS failures also preserved siblingoperation and reply cardinality.Reviewed by: gallatin, nprice, ziaeeMFC after: 2 weeksSponsored by: BBOX.ioDifferential Revision: https://reviews.freebsd.org/D58940 List of files: /freebsd/sys/conf/NOTES

d8e315ba975163a2050dd3d3e193f2472dbc2478 - hid: Add Sony DualSense gamepad driver

Fri, 11 Sep 2026 17:49:22 +0200

hid: Add Sony DualSense gamepad driverAdd a driver for the Sony PS5 DualSense controller (054c:0ce6)providing gamepad input via evdev, lightbar RGB LED control, andplayer indicator LEDs through sysctl.Signed-off-by: Christos Longros Reviewed by: ziaee, wulfMFC after: 1 monthDifferential Revision: https://reviews.freebsd.org/D56345 List of files: /freebsd/sys/conf/NOTES

d70e5b3a735ef294477889646f8a58afa0b45000 - conf: Add COMPAT_FREEBSD15

Tue, 25 Aug 2026 20:08:38 +0200

conf: Add COMPAT_FREEBSD15Define it everywhere that wants COMPAT_FREEBSD14.Reviewed by: imp, kib, emasteSponsored by: OPNsenseSponsored by: Klara, Inc.Differential Revision: https://reviews.freebsd.org/D59017 List of files: /freebsd/sys/conf/NOTES

23a6997e3071cea8d8fc5238792fdd0ad5b5dc9a - fwdv: add AV/C DV capture driver for FireWire camcorders

Sun, 12 Jul 2026 17:25:52 +0200

fwdv: add AV/C DV capture driver for FireWire camcordersAdd fwdv(4) driver for DV video capture from FireWire camcordersusing AV/C protocol and isochronous streaming.Supports AV/C tape transport commands (play, stop, ff, rewind, pause,record, eject) with NTSC/PAL auto-detection and read(2) interfacefor frame capture.Reviewed by: adrianDifferential Revision: https://reviews.freebsd.org/D58122 List of files: /freebsd/sys/conf/NOTES

e2d56447b3a9d2ef9bd0b80c3aaa69e681f4be0f - hrfkill: Add driver to report RFKILL button press

Thu, 25 Jun 2026 04:03:36 +0200

hrfkill: Add driver to report RFKILL button pressThis driver only reports the RFKILL button presses.This is needed for the "airplane" key on some Framework laptops.Reviewed by: wulf, ziaeeEvent: Halifax Hackathon 202606Location: vishwin@'s carCo-authored-by: Daniel ShaeferSponsored by: Framework Computer IncSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D57838 List of files: /freebsd/sys/conf/NOTES

cd7b65080f2f2e038ddba42048f24f8e98b011f2 - fwisound: add Apple FireWire audio driver

Thu, 09 Jul 2026 04:52:43 +0200

fwisound: add Apple FireWire audio driverExpose audio capture from Apple FireWire devices as a standardpcm(4)/dsp(4) device via the newpcm framework.(adrian: I've tested this on an isight camera and loopedit back to USB speakers via "sox -t oss /dev/dsp3 -t oss /dev/dsp4")Reviewed by: adrianDifferential Revision: https://reviews.freebsd.org/D58109 List of files: /freebsd/sys/conf/NOTES

40e05479718460820cd24c22e59519a4f13eba3d - fwcam: add IIDC 1394 FireWire camera driver

Thu, 25 Jun 2026 04:14:22 +0200

fwcam: add IIDC 1394 FireWire camera driverAdd fwcam(4), a driver for IIDC v1.30 (TA Document 1999023) digitalcameras over IEEE 1394.Supports Format_0 (VGA) video modes with isochronous receive DMA,feature control (brightness, exposure, gain, shutter, white balance,focus, etc.), poll/kqueue, and hot-plug via bus reset handling.Reviewed by: adrianDifferential Revision: https://reviews.freebsd.org/D57685 List of files: /freebsd/sys/conf/NOTES

cfec995c87f39e59c80554b85625b4aaa8ddf8db - ixgbe: add MDIO bus support

Fri, 17 Apr 2026 19:11:42 +0200

ixgbe: add MDIO bus supportThis works enough to let me see the marvell switch on the MDIO bus.It uses clause 22, which ixgbe's existing MDIO code doesn't currentlysupport, so it's implemented in a new source file.Since mdio(4) is now required, add it where appropriate to GENERIC kernels.Reviewed by: kbowlingDifferential Revision: https://reviews.freebsd.org/D50128 List of files: /freebsd/sys/conf/NOTES

e44d2e941e8ebd74e6a1b1fdbed83fe86671cbc6 - if_geneve: Add Support for Geneve (RFC8926)

Sat, 11 Apr 2026 16:12:01 +0200

if_geneve: Add Support for Geneve (RFC8926)geneve creates a generic network virtualization tunnel interfacefor Tentant Systems over an L3 (IP/UDP) underlay network that providesa Layer 2 (ethernet) or Layer 3 service using the geneve protocol.This implementation is based on RFC8926.Reviewed by: glebius, adrianDiscussed with: zlei, kpRelnotes: yesDifferential Revision: https://reviews.freebsd.org/D54172 List of files: /freebsd/sys/conf/NOTES

254b23eb1f540844cf2a90f2781ae4231c5701ce - routing: Retire ROUTE_MPATH compile option

Fri, 27 Mar 2026 12:20:05 +0100

routing: Retire ROUTE_MPATH compile optionThe ROUTE_MPATH compile option was introduced totest the new multipath implementation.Since compiling it has no overhead and it's enabledby default, remove it.Reviewed by: melifaro, markjRelnotes: yesDifferential Revision: https://reviews.freebsd.org/D55884 List of files: /freebsd/sys/conf/NOTES

72e85a4d977eff23fcd2b12a3513f0e8fd2ac332 - snd_dummy: Add to sys/conf/files and sys/conf/NOTES

Tue, 24 Mar 2026 11:32:13 +0100

snd_dummy: Add to sys/conf/files and sys/conf/NOTESSponsored by: The FreeBSD FoundationMFC after: 1 weekReviewed by: markjDifferential Revision: https://reviews.freebsd.org/D56040 List of files: /freebsd/sys/conf/NOTES

9318336f2af134b26adcb217f78f70bfdcf5f222 - sound: Retire SND_FEEDER_MULTIFORMAT and SND_FEEDER_FULL_MULTIFORMAT

Tue, 24 Mar 2026 11:31:34 +0100

sound: Retire SND_FEEDER_MULTIFORMAT and SND_FEEDER_FULL_MULTIFORMATThere is no reason to have these legacy controls anymore, all theseformats can be handled just fine nowadays.Sponsored by: The FreeBSD FoundationMFC after: 1 weekReviewed by: markjDifferential Revision: https://reviews.freebsd.org/D55937 List of files: /freebsd/sys/conf/NOTES

bf0e5d987ecd2cbec2200e100bad6d6e724e9315 - sound: Retire SND_OLDSTEREO

Tue, 24 Mar 2026 11:31:22 +0100

sound: Retire SND_OLDSTEREOThis is a legacy option and does not serve a good purpose anymore.Sponsored by: The FreeBSD FoundationMFC after: 1 weekReviewed by: markjDifferential Revision: https://reviews.freebsd.org/D55933 List of files: /freebsd/sys/conf/NOTES

5d311c75324a205f3cd8a8a404a25ebdadb18b54 - sound: Retire SND_DEBUG

Tue, 24 Mar 2026 11:31:17 +0100

sound: Retire SND_DEBUGNot useful anymore.Sponsored by: The FreeBSD FoundationMFC after: 1 weekReviewed by: markjDifferential Revision: https://reviews.freebsd.org/D55932 List of files: /freebsd/sys/conf/NOTES

092687a031064dc08ac198648c6393cc50b06cee - kernel: Be clearer about what ZSTDIO is for

Sat, 21 Mar 2026 08:21:24 +0100

kernel: Be clearer about what ZSTDIO is forZSTDIO is not just for core dumps, and it is now required by ZFS, somove it (and GZIO, which is still just for dumps) to a new “Compressionsupport” section in GENERIC, and add them both to MINIMAL.MFC after: 1 weekReviewed by: impDifferential Revision: https://reviews.freebsd.org/D55940 List of files: /freebsd/sys/conf/NOTES

7a323f873662dae95a061d1eaf8b1d9d1a0f8a23 - sys: Retire le(4)

Fri, 24 Oct 2025 19:26:03 +0200

sys: Retire le(4)We retired most obsolete 10 and 10/100 Ethernet NIC drivers in 2019 --see commits following ebcf740a32ae ("FCP-101: remove obsolete 10 and10/100 Ethernet drivers.).le(4) was retained with with the note "Emulated by QEMU, alternativesdon't yet work for mips64." MIPS has since been removed from the treeand emulators and virtual machines offer many other, more suitabledevices.Reviewed by: brooksRelnotes: YesSponsored by: The FreeBSD FoundationDifferential Revision: https://reviews.freebsd.org/D55516 List of files: /freebsd/sys/conf/NOTES