A new XanMod Linux Kernel based on  Linux Kernel 5.14.15 has been released. XanMod is a general-purpose Linux kernel distribution with custom settings and new features. The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

XanMod is a general-purpose Linux kernel distribution with custom settings and new features. Built to provide a stable, responsive and smooth desktop experience.

The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Supports all recent 64-bit versions of Debian and Ubuntu-based systems.

Main Features

• Preemptive Full Tickless Kernel at 500Hz w/ Tuned CPU Core Scheduler.
• RCU Boost for better responsiveness and lower overall system latency.
• Block Layer w/ multi-threaded runqueue for high I/O throughput.
• Caching, Virtual Memory Manager and CPUFreq Governor improvements.
• BBR TCP Congestion Control + FQ-PIE Packet Scheduling and AQM Algorithm [5.8].
• ORC Unwinder for Kernel Stack Traces (debuginfo) implementation.
• Third-party patchset available: ZSTD kernel, initrd and modules support [5.8][5.6-rt], Full x86_64 FSGSBASE instructions [5.8], Clear Linux [partial], CK's Hrtimer Patchset [5.8][5.4], Wine / Proton Fsync, PCIe ACS Override, BMQ Process Scheduler [5.4 stock disabled], Aufs [5.4] and GCC graysky's.
• Real-time Linux kernel (PREEMPT_RT) build available [5.6-rt][5.4-rt].
• Generic kernel package for compatibility with most Debian & Ubuntu based distributions. Built on the latest GCC 10.2 and Binutils 2.35.
• GPLv2 license. Can be built for any distribution or purpose.

Install via Terminal

echo 'deb  http://deb.xanmod.org releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO -  https://dl.xanmod.org/gpg.key | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod

Reboot.

Meta packages available: linux-xanmod, linux-xanmod-edge, linux-xanmod-lts, linux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:
https://sourceforge.net/projects/xanmod/files/

1. In terminal:

   sudo dpkg -i linux-image-*xanmod*.deb linux-headers-*xanmod*.deb

2. Reboot.

• Check it:

  cat /proc/version

* linux-firmware-image package is optional

Linux 5.14.15-xanmod1

• 052f7ad Linux 5.14.15-xanmod1
• e2bd2b4 Merge tag 'v5.14.15' into 5.14
• b46092c Linux 5.14.15
• 96e4ea3 pinctrl: stm32: use valid pin identifier in stm32_pinctrl_resume()
• 4850e9e ARM: 9122/1: select HAVE_FUTEX_CMPXCHG
• 8034493 e1000e: Separate TGP board type from SPT
• 0c4e87b net: mdiobus: Fix memory leak in __mdiobus_register
• 2f43569 bpf, test, cgroup: Use sk_{alloc,free} for test cases
• 4e5d794 s390/pci: fix zpci_zdev_put() on reserve
• e27170d s390/pci: cleanup resources only if necessary
• 2be38f0 scsi: core: Fix shost->cmd_per_lun calculation in scsi_add_host_with_dma()
• ff261f9 autofs: fix wait name hash calculation in autofs_wait()
• 1009f09 drm/kmb: Limit supported mode to 1080p
• 217d42e drm/kmb: Enable alpha blended second plane
• c1ad040 net/mlx5: Lag, change multipath and bonding to be mutually exclusive
• d2ec7d2 net/mlx5: Lag, move lag destruction to a workqueue
• 42b6431 net: hns3: fix for miscalculation of rx unused desc
• f1972f1 sched/scs: Reset the shadow stack when idle_task_exit
• c4813d3 mm/thp: decrease nr_thps in file's mapping on THP split
• a7fbb56 scsi: qla2xxx: Fix a memory leak in an error path of qla2x00_process_els()
• c8c1b21 scsi: mpi3mr: Fix duplicate device entries when scanning through sysfs
• ce52766 scsi: storvsc: Fix validation for unsolicited incoming packets
• 08d82a9 scsi: iscsi: Fix set_param() handling
• 6408a4c ASoC: codec: wcd938x: Add irq config support
• 9eb2aae Input: snvs_pwrkey - add clk handling
• 9dd0389 perf/x86/msr: Add Sapphire Rapids CPU support
• 11d6811 libperf tests: Fix test_stat_cpu
• 65eec1f libperf test evsel: Fix build error on !x86 architectures
• b606230 spi-mux: Fix false-positive lockdep splats
• 722ef19 spi: Fix deadlock when adding SPI controllers on SPI buses
• 785d690 ALSA: hda: avoid write to STATESTS if controller is in reset
• 3972b03 platform/x86: intel_scu_ipc: Update timeout value in comment
• 6659008 platform/x86: intel_scu_ipc: Increase virtual timeout to 10s
• f5966ba isdn: mISDN: Fix sleeping function called from invalid context
• ef24577 ARM: dts: spear3xx: Fix gmac node
• 834cc3f net: stmmac: add support for dwmac 3.40a
• 0c87817 btrfs: deal with errors when checking if a dir entry exists during log replay
• 051995b ALSA: hda: intel: Allow repeatedly probing on codec configuration errors
• 9906da1 objtool: Update section header before relocations
• e73e72b objtool: Check for gelf_update_rel[a] failures
• 515e033 bitfield: build kunit tests without structleak plugin
• 3f66b6e thunderbolt: build kunit tests without structleak plugin
• d9f94a8 device property: build kunit tests without structleak plugin
• 2c793a6 iio/test-format: build kunit tests without structleak plugin
• 930f561 gcc-plugins/structleak: add makefile var for disabling structleak
• 1d1af4d drm/msm/a6xx: Serialize GMU communication
• bbdd158 kunit: fix reference count leak in kfree_at_end
• dfcc47a KVM: MMU: Reset mmu->pkru_mask to avoid stale data
• e647d75 net: hns3: fix the max tx size according to user manual
• b0e6db0 drm: mxsfb: Fix NULL pointer dereference crash on unload
• 56a3d96 KVM: SEV-ES: Set guest_state_protected after VMSA update
• d469678 net: bridge: mcast: use multicast_membership_interval for IGMPv3
• 8f20259 selftests: netfilter: remove stray bash debug line
• 057aef8 netfilter: Kconfig: use 'default y' instead of 'm' for bool config option
• cc20226 isdn: cpai: check ctr->cnr to avoid array index out of bound
• 6197eb0 nfc: nci: fix the UAF of rf_conn_info object
• fb82d4d KVM: x86: remove unnecessary arguments from complete_emulator_pio_in
• 66e46fe KVM: x86: split the two parts of emulator_pio_in
• 9887c16 KVM: x86: check for interrupts before deciding whether to exit the fast path
• 169577c KVM: x86: leave vcpu->arch.pio.count alone in emulator_pio_in_out
• 62a1a25 KVM: SEV-ES: reduce ghcb_sa_len to 32 bits
• 3f54362 KVM: SEV-ES: go over the sev_pio_data buffer in multiple passes if needed
• 4988e00 KVM: SEV-ES: fix length of string I/O
• 727286b KVM: SEV-ES: keep INS functions together
• 98c55c5 KVM: SEV-ES: clean up kvm_sev_es_ins/outs
• abcae3c KVM: SEV-ES: rename guest_ins_data to sev_pio_data
• 6697ceb KVM: SEV: Flush cache on non-coherent systems before RECEIVE_UPDATE_DATA
• 495bd03 KVM: nVMX: promptly process interrupts delivered while in guest mode
• dc94b8b mm, slub: fix incorrect memcg slab count for bulk free
• 159d8cf mm, slub: fix potential use-after-free in slab_debugfs_fops
• 42b8194 mm, slub: fix potential memoryleak in kmem_cache_open()
• ec93d4a mm, slub: fix mismatch between reconstructed freelist depth and cnt
• 65ede7b powerpc/idle: Don't corrupt back chain when going idle
• 5a8c22e KVM: PPC: Book3S HV: Make idle_kvm_start_guest() return 0 if it went to guest
• 6d077c3 KVM: PPC: Book3S HV: Fix stack handling in idle_kvm_start_guest()
• e8735e2 ucounts: Fix signal ucount refcounting
• 1eb8253 ucounts: Proper error handling in set_cred_ucounts
• f7f7e4d ucounts: Pair inc_rlimit_ucounts with dec_rlimit_ucoutns in commit_creds
• 32880dc ucounts: Move get_ucounts from cred_alloc_blank to key_change_session_keyring
• 04b938f net: dsa: mt7530: correct ds->num_ports
• 4e9e46a audit: fix possible null-pointer dereference in audit_filter_rules
• b1a34f8 blk-cgroup: blk_cgroup_bio_start() should use irq-safe operations on blkg->iostat_cpu
• 152f351 ASoC: nau8824: Fix headphone vs headset, button-press detection no longer working
• a60ce08 ASoC: DAPM: Fix missing kctl change notifications
• 9da68a1 ALSA: hda/realtek: Add quirk for Clevo PC50HS
• 896fc3a ALSA: usb-audio: Provide quirk for Sennheiser GSP670 Headset
• b77ba1e mm/secretmem: fix NULL page->mapping dereference in page_is_secretmem()
• abe046d vfs: check fd has read access in kernel_read_file_from_fd()
• 3681e47 elfcore: correct reference to CONFIG_UML
• 9ee4e9a mm/mempolicy: do not allow illegal MPOL_F_NUMA_BALANCING | MPOL_LOCAL in mbind()
• 149958e userfaultfd: fix a race between writeprotect and exit_mmap()
• 6de9169 mm/userfaultfd: selftests: fix memory corruption with thp enabled
• 0e677ea ocfs2: mount fails with buffer overflow in strlen
• fa9b6b6 ocfs2: fix data corruption after conversion from inline format
• 909c848 tracing: Have all levels of checks prevent recursion
• 54dc25f ceph: fix handling of "meta" errors
• 0ff7b35 ceph: skip existing superblocks that are blocklisted or shut down when mounting
• d832133 can: j1939: j1939_xtp_rx_rts_session_new(): abort TP less than 9 bytes
• 03ec23e can: j1939: j1939_xtp_rx_dat_one(): cancel session if receive TP.DT with error length
• 6e88117 can: j1939: j1939_netdev_start(): fix UAF for rx_kref of j1939_priv
• fb545be can: j1939: j1939_tp_rxtimer(): fix errant alert in j1939_tp_rxtimer
• 013e789 can: isotp: isotp_sendmsg(): fix TX buffer concurrent access in isotp_sendmsg()
• a76abed can: isotp: isotp_sendmsg(): add result check for wait_event_interruptible()
• 1d12d11 can: isotp: isotp_sendmsg(): fix return error on FC timeout on TX path
• 0e5afdc can: peak_pci: peak_pci_remove(): fix UAF
• 44c353a can: peak_usb: pcan_usb_fd_decode_status(): fix back to ERROR_ACTIVE state notification
• e18b9f4 can: rcar_can: fix suspend/resume
• 113f7a1 net: enetc: make sure all traffic classes can send large frames
• 284c68c net: enetc: fix ethtool counter name for PM0_TERR
• eff55dd drm/kmb: Enable ADV bridge after modeset
• c0179db drm/kmb: Corrected typo in handle_lcd_irq
• 566ec00 drm/kmb: Disable change of plane parameters
• 2317b45 drm/kmb: Remove clearing DPHY regs
• 97cfc4b drm/kmb: Work around for higher system clock
• 4dbf3d6 drm/panel: ilitek-ili9881c: Fix sync for Feixin K101-IM2BYL02 panel
• 3b194af net/mlx5e: IPsec: Fix work queue entry ethernet segment checksum flags
• ea7a4d6 net/mlx5e: IPsec: Fix a misuse of the software parser's fields
• e867502 ice: Add missing E810 device ids
• 9b76c3f igc: Update I226_K device ID
• 3300633 e1000e: Fix packet loss on Tiger Lake and later
• 95c0a0c ptp: Fix possible memory leak in ptp_clock_register()
• d487413 net: stmmac: Fix E2E delay mechanism
• 9b5a29f net: hns3: disable sriov before unload hclge layer
• 82a136c net: hns3: fix vf reset workqueue cannot exit
• 9ee9191 net: hns3: schedule the polling again when allocation fails
• 6446be7 net: hns3: add limit ets dwrr bandwidth cannot be 0
• dddafed net: hns3: reset DWRR of unused tc to zero
• 93fa027 net: hns3: Add configuration of TM QCN error event
• 3ea0b49 powerpc/smp: do not decrement idle task preempt count in CPU offline
• 0666c4c net: dsa: Fix an error handling path in 'dsa_switch_parse_ports_of()'
• 9ef9a28 NIOS2: irqflags: rename a redefined register name
• 8b523da net/sched: act_ct: Fix byte count on fragmented packets
• 872b836 net: dsa: lantiq_gswip: fix register definition
• 57deb5f hamradio: baycom_epp: fix build for UML
• c74f3c1 ipv6: When forwarding count rx stats on the orig netdev
• 1dda424 tcp: md5: Fix overlap between vrf and non-vrf keys
• 9c281a1 lan78xx: select CRC32
• 5220cad sctp: fix transport encap_port update in sctp_vtag_verify
• ddffcd2 netfilter: ipvs: make global sysctl readonly in non-init netns
• cd3d028 netfilter: ip6t_rt: fix rt0_hdr parsing in rt_mt6
• aabf95d ice: Print the api_patch as part of the fw.mgmt.api
• 75ebc3b ice: fix getting UDP tunnel entry
• 777682e ice: Avoid crash from unnecessary IDA free
• 31b4517 ice: Fix failure to re-add LAN/RDMA Tx queues
• 18b4fcf ASoC: wm8960: Fix clock configuration on slave mode
• 2b7d598 dma-debug: fix sg checks in debug_dma_map_sg()
• 90c7c58 netfilter: nf_tables: skip netdev events generated on netns removal
• cae7cab netfilter: xt_IDLETIMER: fix panic that occurs when timer_type has garbage value
• 78325fc KVM: arm64: Release mmap_lock when using VM_SHARED with MTE
• b372264 KVM: arm64: Fix host stage-2 PGD refcount
• 649c2e7 ASoC: cs4341: Add SPI device ID table
• efdcc26 ASoC: pcm179x: Add missing entries SPI to device ID table
• 242ce1c ASoC: fsl_xcvr: Fix channel swap issue with ARC
• 4155181 ASoC: pcm512x: Mend accesses to the I2S_1 and I2S_2 registers
• c8ecd22 powerpc/bpf: Emit stf barrier instruction sequences for BPF_NOSPEC
• 663e89b powerpc/security: Add a helper to query stf_barrier type
• 23d127c powerpc/bpf: Validate branch ranges
• e680ab9 powerpc/lib: Add helper to check if offset is within conditional branch range
• 6fe5d30 NFSD: Keep existing listeners on portlist error
• 9ad89fc xtensa: xtfpga: Try software restart before simulating CPU reset
• 8287678 xtensa: xtfpga: use CONFIG_USE_OF instead of CONFIG_OF
• 2602e9c drm/amdgpu: init iommu after amdkfd device init
• 6877126 drm/amdgpu/display: fix dependencies for DRM_AMD_DC_SI
• 537a718 r8152: avoid to resubmit rx immediately
• 7d8cdaf xen/x86: prevent PVH type from getting clobbered
• 28d084a block: decode QUEUE_FLAG_HCTX_ACTIVE in debugfs output
• 96a37f6 ARM: dts: at91: sama5d2_som1_ek: disable ISC node by default
• 470585c arm: dts: vexpress-v2p-ca9: Fix the SMB unit-address
• 79e3dc3 sh: pgtable-3level: fix cast to pointer from integer of different size
• d3f4c51 parisc: math-emu: Fix fall-through warnings
• 4248f37 block/mq-deadline: Move dd_queued() to fix defined but not used warning

Homepage
Download Linux 5.14.15-xanmod1 source from GitHub