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nuttx/Documentation/ReleaseNotes/NuttX-12.4.0
Alin Jerpelea c04118309c Documentation: add NuttX-12.4.0 release notes 
Add release notes for 12.4.0 release

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2024-01-09 05:47:24 -08:00

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NuttX-12.4.0
------------
What's New In This Release
Improvements to Core OS
sched
* [#10919](https://github.com/apache/nuttx/pull/10919) sched: assert: move the backtrace dump after the stack dump
* [#11195](https://github.com/apache/nuttx/pull/11195) sched: assert: restore assertion registers to array of last registers
* [#10858](https://github.com/apache/nuttx/pull/10858) sched: assert.c: Print process name in assert dump
* [#11131](https://github.com/apache/nuttx/pull/11131) sched: Check for zero sleep time and yield CPU
* [#11226](https://github.com/apache/nuttx/pull/11226) sched: delete check when pick nexttcb in readytorun list
* [#11038](https://github.com/apache/nuttx/pull/11038) sched: env_dup: fix issue about USE_AFTER_FREE
* [#11102](https://github.com/apache/nuttx/pull/11102) sched: explicitly select the cpuload clock source configuration
* [#10816](https://github.com/apache/nuttx/pull/10816) sched: Fix dependencies of CONFIG_SCHED_CPULOAD_ settings
* [#11036](https://github.com/apache/nuttx/pull/11036) sched: Follow o_cloexe semantics when calling the exec function
* [#10867](https://github.com/apache/nuttx/pull/10867) sched: format: modify spin_lock_irqsave format
* [#11018](https://github.com/apache/nuttx/pull/11018) sched: group/killchildren: replace syscall(2) to kernel api
* [#10605](https://github.com/apache/nuttx/pull/10605) sched: Implement ticket spinlock
* [#10827](https://github.com/apache/nuttx/pull/10827) sched: Improve adjtime() functionality
* [#11231](https://github.com/apache/nuttx/pull/11231) sched: lock refine: remove sched_[un]lock in xxx_waitsample
* [#11302](https://github.com/apache/nuttx/pull/11302) sched: misc/rwlock:Implementing read/write locks.
* [#11347](https://github.com/apache/nuttx/pull/11347) sched: Print more information in assert
* [#11017](https://github.com/apache/nuttx/pull/11017) sched: pthread/barrierwait: replace syscall(2) to kernel api
* [#10929](https://github.com/apache/nuttx/pull/10929) sched: Remove the unused tcb argument from group_setupidlefiles
* [#10776](https://github.com/apache/nuttx/pull/10776) sched: rw spinlock
* [#11124](https://github.com/apache/nuttx/pull/11124) sched: rw spinlocks: cosmetic changes
* [#11191](https://github.com/apache/nuttx/pull/11191) sched: sem_holder.c: When accessing SEM_WAITLIST, use holder's addrenv
* [#11257](https://github.com/apache/nuttx/pull/11257) sched: semaphore: Move POSIX regulated parts of semaphores into libc
* [#11252](https://github.com/apache/nuttx/pull/11252) sched: sigaction: Expand si_user for non-kernel signals
* [#10970](https://github.com/apache/nuttx/pull/10970) sched: smp call exit immediately when cpuset change to 0.
* [#10861](https://github.com/apache/nuttx/pull/10861) sched: spinlock: Add spin_lock_init and spin_is_locked macro
* [#11348](https://github.com/apache/nuttx/pull/11348) sched: Stack recored:Add maximum stack statistics when the task is running
* [#9163](https://github.com/apache/nuttx/pull/9163) sched: Stop the sched timer when possible to save the power in tickless mode
* [#10934](https://github.com/apache/nuttx/pull/10934) sched: support smp function call
* [#11032](https://github.com/apache/nuttx/pull/11032) sched: task: [posix]spawn: Simplify how spawn attributes are handled
* [#11241](https://github.com/apache/nuttx/pull/11241) sched: task: pthread_cancelpt: Fix nxtask_delete from another task group
* [#11165](https://github.com/apache/nuttx/pull/11165) sched: task: pthread_cancelpt: Move cancel point handling to libc, data to TLS
* [#11097](https://github.com/apache/nuttx/pull/11097) sched: task: Remove spawn_proxyattrs as obsolete implementation
* [#11177](https://github.com/apache/nuttx/pull/11177) sched: taskfiles: skip unnecessary file open/close operations to improve performance
* [#11250](https://github.com/apache/nuttx/pull/11250) sched: taskspawn: fix spawn fail if enable FDCHECK
* [#10834](https://github.com/apache/nuttx/pull/10834) sched: timer: handle perf count overflow
mm
* [#11068](https://github.com/apache/nuttx/pull/11068) mm: both use spin_lock_irqxx() when operated delaylist
* [#11183](https://github.com/apache/nuttx/pull/11183) mm: free delay list when exceeding specified count
* [#11258](https://github.com/apache/nuttx/pull/11258) mm: kmap: Finalize kmap implementation for RISC-V
* [#10837](https://github.com/apache/nuttx/pull/10837) mm: kmap: Fix bug in kmm_unmap
* [#10876](https://github.com/apache/nuttx/pull/10876) mm: kmap: Fix several issues with the kmm_map interface
* [#11114](https://github.com/apache/nuttx/pull/11114) mm: kmap: Fix bad dependency to ARCH_VMA_MAPPING
* [#11092](https://github.com/apache/nuttx/pull/11092) mm: improve SMP performance
* [#11152](https://github.com/apache/nuttx/pull/11152) mm: record the maximum system memory usage
* [#11168](https://github.com/apache/nuttx/pull/11168) mm: Remove mm_spinlock
* [#10984](https://github.com/apache/nuttx/pull/10984) mm: Replace enter_critical_section with spin_irqsave
libs
* [#11408](https://github.com/apache/nuttx/pull/11408) libc: add fgetwc, getwc, ungetwc wchar api implementation
* [#10602](https://github.com/apache/nuttx/pull/10602) libc: add support for custom streams with fopencookie()
* [#11011](https://github.com/apache/nuttx/pull/11011) libc: add support for memory buffer stream with fmemopen()
* [#11274](https://github.com/apache/nuttx/pull/11274) libc: add support for open_memstream
* [#11288](https://github.com/apache/nuttx/pull/11288) libc: arm: add support of PACBTI
* [#10969](https://github.com/apache/nuttx/pull/10969) libc: Change errno to set_errno and get_errno
* [#11294](https://github.com/apache/nuttx/pull/11294) libc: Fix -nan issue with f32
* [#11198](https://github.com/apache/nuttx/pull/11198) libc: Fix improper handling of 64 bit types for libvsprintf
* [#11322](https://github.com/apache/nuttx/pull/11322) libc: Handle PCREL_HI20/LO12_I/S relocations correctly
* [#10994](https://github.com/apache/nuttx/pull/10994) libc: Improve stdio unlock version function
* [#11364](https://github.com/apache/nuttx/pull/11364) libc: lib_slcd: fix encode/decode of binary nibble to/from ascii hex
* [#11035](https://github.com/apache/nuttx/pull/11035) libc: localtime: fix the timezone error caused by minor error
* [#11281](https://github.com/apache/nuttx/pull/11281) libc: machine/arm: align related implementations of armv7 architecture
* [#10927](https://github.com/apache/nuttx/pull/10927) libc: machine: Remove FAR from sparc
* [#11133](https://github.com/apache/nuttx/pull/11133) libc: realpath: allocate link buffer of pseudofs to save stack
* [#10913](https://github.com/apache/nuttx/pull/10913) libc: Refine the implementation of fopen/fdopen
* [#10993](https://github.com/apache/nuttx/pull/10993) libc: Remove the unused lib_libdtoa.c
* [#11137](https://github.com/apache/nuttx/pull/11137) libc: Solve some problems encountered during cmake compilation
* [#10992](https://github.com/apache/nuttx/pull/10992) libc: stdio: Change FILE buffer field from "unsigned char *" to "char *"
* [#11063](https://github.com/apache/nuttx/pull/11063) libc: stdlib/lib_exit.c: fix multiple definition of __dso_handle and sethost.sh: add MSYS environmen for msys2
* [#11447](https://github.com/apache/nuttx/pull/11447) libc: stream: add stream interface
* [#11350](https://github.com/apache/nuttx/pull/11350) libc: Support gdbstub kernal debugging
* [#11346](https://github.com/apache/nuttx/pull/11346) libc: Supports storing coredump into block devices
* [#10862](https://github.com/apache/nuttx/pull/10862) libc: memfd: shm_unlink or unlink anonymous file
* [#10891](https://github.com/apache/nuttx/pull/10891) libc: memfd: turn a runtime error into a linker error
* [#10972](https://github.com/apache/nuttx/pull/10972) libds: add missing observer_b16.c to cmake build
* [#10915](https://github.com/apache/nuttx/pull/10915) libdsp: lib_observer.c: use float numbers for some calculations
* [#10979](https://github.com/apache/nuttx/pull/10979) libdsp: update LP_FILTER comment
* [#11256](https://github.com/apache/nuttx/pull/11256) libm: Fix an issue that public header files are not exported
* [#11162](https://github.com/apache/nuttx/pull/11162) libm: newlib: Change the download site to https
* [#11386](https://github.com/apache/nuttx/pull/11386) libs: log2ceil: Move implementation of log2ceil to a common place
* [#11043](https://github.com/apache/nuttx/pull/11043) libs: modlib: optimize code and add arch api for allocating data section
* [#11394](https://github.com/apache/nuttx/pull/11394) libxx: cmake: remove useless code
* [#11050](https://github.com/apache/nuttx/pull/11050) libxx: Silence warnings when building libcxx.
* [#11301](https://github.com/apache/nuttx/pull/11301) libxx: upgrade llvm version to 17.0.6
* [#10860](https://github.com/apache/nuttx/pull/10860) libxx: Use gnu++20 option only if using libcxx
misc
* [#11242](https://github.com/apache/nuttx/pull/11242) Revert "libc/lib_bzero:Add bzero prototype."
* [#10881](https://github.com/apache/nuttx/pull/10881) arm, arm64, xtensa, libxx: Change sed -r to sed -E to support macOS
* [#11027](https://github.com/apache/nuttx/pull/11027) assert: rename __ASSERT to __ASSERT__ to avoid conflict
* [#11025](https://github.com/apache/nuttx/pull/11025) audio: add amr format support
* [#11055](https://github.com/apache/nuttx/pull/11055) binfmt/elf: Select ARCH_USE_TEXT_HEAP if ARCH_HAVE_TEXT_HEAP
* [#11238](https://github.com/apache/nuttx/pull/11238) clock.h: use CONFIG_DEBUG_SCHED to test init ticks
* [#10924](https://github.com/apache/nuttx/pull/10924) crypto/rsa_verify: export rsa verify via /dev/crypto
* [#10978](https://github.com/apache/nuttx/pull/10978) debug/assert: decouple configuration of show file name feature
* [#10809](https://github.com/apache/nuttx/pull/10809) dma: support source/destination address auto step
* [#10870](https://github.com/apache/nuttx/pull/10870) fixedmath: add abs and sign operations
* [#11111](https://github.com/apache/nuttx/pull/11111) ioctl: add definitions related to ethtool
* [#11121](https://github.com/apache/nuttx/pull/11121) ioctl: add SIOCGIWNAME support
* [#11026](https://github.com/apache/nuttx/pull/11026) kernel: replace all sem_* to nxsem_*: in kernel space
* [#10849](https://github.com/apache/nuttx/pull/10849) langinfo: The character U+ff0c "，" could be confused with the ASCII character U…
* [#11243](https://github.com/apache/nuttx/pull/11243) list: search prev item in reverse order
* [#11221](https://github.com/apache/nuttx/pull/11221) poll: pollsetup should notify only one fd passed by caller
* [#10892](https://github.com/apache/nuttx/pull/10892) refine: move BIT Macro to nuttx/bits.h
* [#11218](https://github.com/apache/nuttx/pull/11218) spinlock: Move the inclusion of stdatomic.h to source file
* [#10869](https://github.com/apache/nuttx/pull/10869) sys/types: supporting 32-bit IDs for gid_t/uid_t
* [#11207](https://github.com/apache/nuttx/pull/11207) tcbinfo:remove total_num form tcbinfo.
* [#11298](https://github.com/apache/nuttx/pull/11298) video: Update v4l2m2m interface & create videoio.h
* [#11362](https://github.com/apache/nuttx/pull/11362) virtio.h: add virtio_has_feature api for virtio driver
Build System
Improvements
* [#11007](https://github.com/apache/nuttx/pull/11007) Revert "make/archive: Use the full path name when matching or storing…
* [#11047](https://github.com/apache/nuttx/pull/11047) applications: Move the test tools in the system to the testing
* [#11395](https://github.com/apache/nuttx/pull/11395) cmake: build file support with libcxx 17.0.6
* [#10982](https://github.com/apache/nuttx/pull/10982) cmake: correct cmake rule file name
* [#11375](https://github.com/apache/nuttx/pull/11375) cmake: fix NUTTX_COMMON_DIR
* [#11031](https://github.com/apache/nuttx/pull/11031) cmake: init RISC-V cmake qemu-rv build
* [#10843](https://github.com/apache/nuttx/pull/10843) cmake: raise error if previous make build was not cleaned
* [#10879](https://github.com/apache/nuttx/pull/10879) fix: TreeNode has same attribute with NodeMixin
* [#10968](https://github.com/apache/nuttx/pull/10968) nuttx: generate nuttx.map file when enable debug link map.
* [#11303](https://github.com/apache/nuttx/pull/11303) sh: Enhanced compilation system
* [#11432](https://github.com/apache/nuttx/pull/11432) tools: config.mk: whether verbosity is enabled or not, should use bash
* [#11098](https://github.com/apache/nuttx/pull/11098) tools: configure.c and tools/sethost.sh Add CONFIG_EXPERIMENTAL for configure windows native
Architectural Support
New Architecture Support
* [#11319](https://github.com/apache/nuttx/pull/11319) arm:imxrt: Add support for imxrt1170 Soc and imxrt1170-evk board
* [#11371](https://github.com/apache/nuttx/pull/11371) riscv: Add support for Bouffalo Lab BL808 SoC (T-Head C906)
Architecture Improvements
* [#10836](https://github.com/apache/nuttx/pull/10836) arch: add a flag indicating that the chip doesn't support DMA transfer from/to FLASH
* [#10759](https://github.com/apache/nuttx/pull/10759) arch: add use_data to g_tcbinfo
* [#11190](https://github.com/apache/nuttx/pull/11190) arch: dumponexit: unify dump on exit to common code
* [#10828](https://github.com/apache/nuttx/pull/10828) arch: simplify ARCH_PERF_EVENTS related code
* [#11160](https://github.com/apache/nuttx/pull/11160) arch: textheap: add _heapmember declare for text and data heap
arm
* [#11282](https://github.com/apache/nuttx/pull/11282) clang: replace deprecated parameter
* [#11170](https://github.com/apache/nuttx/pull/11170) Let's old arm's arm_doirq return register context like armv7-a
* [#11413](https://github.com/apache/nuttx/pull/11413) debug:fix gdbstub clear fpb & dwt when already use jtag/swo bug
* [#11166](https://github.com/apache/nuttx/pull/11166) armv8-m: Fix typo error for NVIC_SYSHCON_HARDFAULTPENDED
* [#11118](https://github.com/apache/nuttx/pull/11118) cxd56xx: Support to get gnss firmware version
* [#11398](https://github.com/apache/nuttx/pull/11398) imxrt: Extend FlexIO support to 117x
* [#11436](https://github.com/apache/nuttx/pull/11436) imxrt: flexio move ifdef guard lower
* [#11012](https://github.com/apache/nuttx/pull/11012) imxrt: NXP I2C non-DMA end only on stop with end of packet
* [#11000](https://github.com/apache/nuttx/pull/11000) imxrt: nxp lpi2c calculated timeout can not be 0
* [#11033](https://github.com/apache/nuttx/pull/11033) imxrt: NXP lpi2c DMA transaction only need the status conditioned
* [#11164](https://github.com/apache/nuttx/pull/11164) imxrt: NXP Serial Do not wait on TXDMA semaphore
* [#11070](https://github.com/apache/nuttx/pull/11070) imxrt: NXP Serial overcome race where DMA has not fetched TCD again
* [#11020](https://github.com/apache/nuttx/pull/11020) imxrt: serial Ensure the cache is updated if the DMA has updated again
* [#11199](https://github.com/apache/nuttx/pull/11199) imx6: Replace cpu_start_t with start_t
* [#10877](https://github.com/apache/nuttx/pull/10877) mx8mp: Add support for SPI
* [#11203](https://github.com/apache/nuttx/pull/11203) nRF91: initial support for GNSS
* [#11308](https://github.com/apache/nuttx/pull/11308) nrf{52|53|91}: add missing support for 1 Mbps UART baud
* [#10826](https://github.com/apache/nuttx/pull/10826) nrf{52|53|91}: add support for up_perf
* [#10830](https://github.com/apache/nuttx/pull/10830) nrf{52|53|91}: fixes for timer
* [#11172](https://github.com/apache/nuttx/pull/11172) rp2040: pwm: Fix errors at CONFIG_PWM_NCHANNELS=1
* [#10817](https://github.com/apache/nuttx/pull/10817) sama5: Sort SAMA5D2 adc/tsd dma
* [#10806](https://github.com/apache/nuttx/pull/10806) sama5: TSD trigger and pressure scaling issues
* [#11307](https://github.com/apache/nuttx/pull/11307) samd212: invert tx and rx in spi_dma_setup
* [#11212](https://github.com/apache/nuttx/pull/11212) samd212: sam_dmac: Fix compilation and fix SAM_DMAC_CHINTENCLR settings
* [#10855](https://github.com/apache/nuttx/pull/10855) samv7: channel gain switching in aefc
* [#11312](https://github.com/apache/nuttx/pull/11312) samv7: sam_emac: Implement errata workaround for KSZ8061 PHY
* [#10847](https://github.com/apache/nuttx/pull/10847) {stm32|stm32f7|at32|samv7|imxrt}: fix for adc_setup
* [#11211](https://github.com/apache/nuttx/pull/11211) stm32: Add support for Ethernet packet timestamping and PTP timer
* [#11175](https://github.com/apache/nuttx/pull/11175) stm32: foc: add support for board-specific ioctl
* [#10833](https://github.com/apache/nuttx/pull/10833) stm32: Initialize LED driver during late initialization for nucleo-f446re
* [#11181](https://github.com/apache/nuttx/pull/11181) stm32: stm32/stm32_adc.c: protect irq_attach with refcounter
* [#11194](https://github.com/apache/nuttx/pull/11194) stm32: stm32_foc.c: rename some macros
* [#11194](https://github.com/apache/nuttx/pull/11194) stm32: stm32_eth: Fix excessively long critical section in ifdown handlerm
* [#10865](https://github.com/apache/nuttx/pull/10865) stm32: UART needs to be disabled before changing setup
* [#10824](https://github.com/apache/nuttx/pull/10824) stm32l4: ADC: Adds low level operations to start and stop DMA.
* [#11154](https://github.com/apache/nuttx/pull/11154) stm32h7: serial: Do not wait on TXDMA semaphore
* [#11323](https://github.com/apache/nuttx/pull/11323) stm32h7: serial refactor out tx dma semaphore
* [#11332](https://github.com/apache/nuttx/pull/11332) stm32h7: serial Remove .txdmasem = SEM_INITIALIZER(1) bad cherry-pick
* [#10841](https://github.com/apache/nuttx/pull/10841) stm32h7: stm32_oneshot.c: Fix format warnings.
* [#11334](https://github.com/apache/nuttx/pull/11334) stm32h7: stm32h7_adc: Dynamically set clock prescaler and BOOST
* [#11367](https://github.com/apache/nuttx/pull/11367) stm32u5: fix EXTICR2,3,4 register offsets
* [#10846](https://github.com/apache/nuttx/pull/10846) s32k1xx: Fix LPUART inversion warnings & config.
* [#10844](https://github.com/apache/nuttx/pull/10844) s32k1xx: Fix warnings in PWM code.
* [#11099](https://github.com/apache/nuttx/pull/11099) s32kxxx: flexcan doesn't set srr bit for extended frames
* [#11325](https://github.com/apache/nuttx/pull/11325) s32k3xx: NXP S32K3xx Fixes stuttering output
* [#11106](https://github.com/apache/nuttx/pull/11106) s32k3xx: serial ensure the cache is updated if the DMA has updated again
arm64
* [#10888](https://github.com/apache/nuttx/pull/10888) Add support for FIQ interrupts
* [#11352](https://github.com/apache/nuttx/pull/11352) coredump: support arm64 coredump
* [#11200](https://github.com/apache/nuttx/pull/11200) Disable ARCH_HAVE_FORK for arm64 as a precaution
* [#11429](https://github.com/apache/nuttx/pull/11429) Fix GICv2 detection
* [#10966](https://github.com/apache/nuttx/pull/10966) Remove unnecessary code in arm64_cpu_idle.S
* [#11037](https://github.com/apache/nuttx/pull/11037) support relocate for aarch64
* [#10917](https://github.com/apache/nuttx/pull/10917) support up_coherent_dcache function
* [#10918](https://github.com/apache/nuttx/pull/10918) target cpuid calculation error in arm64_gic_raise_sgi function
* [#11182](https://github.com/apache/nuttx/pull/11182) the bug of sscanf exception output in arm64 platform
* [#11245](https://github.com/apache/nuttx/pull/11245) vector: no need to save x0 to sp
* [#10904](https://github.com/apache/nuttx/pull/10904) XN should only be set when the attribute MT_EXECUTE_NEVER is set
risc-v
* [#10856](https://github.com/apache/nuttx/pull/10856) addrenv: utils: Determine page table flags by type of vaddr
* [#11113](https://github.com/apache/nuttx/pull/11113) addrenv: Fix static page table mapping (paddr instead of vaddr)
* [#10838](https://github.com/apache/nuttx/pull/10838) addrenv: Fix the user VMA end address
* [#10829](https://github.com/apache/nuttx/pull/10829) addrenv: Fix two SHM related issues
* [#11389](https://github.com/apache/nuttx/pull/11389) arch_elf: Check for _HI20 relocation validity
* [#11437](https://github.com/apache/nuttx/pull/11437) espressif: mcuboot: Fix dependency of the Espressif's port MCUboot.
* [#11034](https://github.com/apache/nuttx/pull/11034) espressif: Update esp-hal-3rdparty version
* [#11024](https://github.com/apache/nuttx/pull/11024) litex/litex_emac: Add support for KSZ8061 ethernet PHY.
* [#11029](https://github.com/apache/nuttx/pull/11029) litex/litex-emac: Add support for phy interrupts.
* [#11028](https://github.com/apache/nuttx/pull/11028) litex/litex_gpio: Fix ISR dispatch when using higher GPIO indexes.
* [#11365](https://github.com/apache/nuttx/pull/11365) mmu: Extend MMU Flags to 64-bit for T-Head C906 and Svpbmt
* [#11283](https://github.com/apache/nuttx/pull/11283) mpfs: corespi: Round up divider to prevent overlock of SPI
* [#10822](https://github.com/apache/nuttx/pull/10822) mpfs: corespi: Several speed optimizations to the FPGA driver
* [#10921](https://github.com/apache/nuttx/pull/10921) mpfs: ethernet: Fix RX/TX buffer and descriptor handling
* [#11405](https://github.com/apache/nuttx/pull/11405) mpfs: ethernet: Remove DMA_ENABLE hack
* [#10922](https://github.com/apache/nuttx/pull/10922) mpfs: entrypoints: Fix potential R_RISCV_JAL linker error
* [#11247](https://github.com/apache/nuttx/pull/11247) mpfs: ihc: cleanup DEBUGASSERTs and irq enabling
* [#11355](https://github.com/apache/nuttx/pull/11355) mpfs: mpfs_head.S: Change j/jal to tail call
* [#10923](https://github.com/apache/nuttx/pull/10923) mpfs: mpfs_head.S: Simplify clearing PMP
* [#11233](https://github.com/apache/nuttx/pull/11233) mpfs: opensbi: update opensbi to version 1.3.1
* [#11404](https://github.com/apache/nuttx/pull/11404) mpfs: usb: Use kernel memory instead of user memory for DMA
* [#11403](https://github.com/apache/nuttx/pull/11403) mpfs: pmpcfg: Move PMPCFG registers to common location
* [#10875](https://github.com/apache/nuttx/pull/10875) pgalloc.h: Return kernel vaddr for kernel RAM paddr
* [#11374](https://github.com/apache/nuttx/pull/11374) riscv_pmp.c: Revert LOG2_CEIL back to run-time log2ceil function
* [#11001](https://github.com/apache/nuttx/pull/11001) Simplify PMP configuration and code
* [#11441](https://github.com/apache/nuttx/pull/11441) Update mode.h to add CSR_TVEC
sim
* [#10930](https://github.com/apache/nuttx/pull/10930) crypto: Use mbedtls default configuration without special check
* [#11381](https://github.com/apache/nuttx/pull/11381) sim_lcd: add open & close
* [#11122](https://github.com/apache/nuttx/pull/11122) sim_netdriver: some sim defconfig have problems when using the network
* [#11246](https://github.com/apache/nuttx/pull/11246) sim support 16bbp
* [#11237](https://github.com/apache/nuttx/pull/11237) simwifi: Connect the wifi whose ssid contains the special charaters.
* [#11235](https://github.com/apache/nuttx/pull/11235) simwifi: Escapes the special characters of ssid in the scan results.
* [#11069](https://github.com/apache/nuttx/pull/11069) simwifi: Fix the error of the need length for scan bssinfo.
* [#11112](https://github.com/apache/nuttx/pull/11112) simwifi: For scan results, parse and translate the Chinese ssid encoded by the wpa_cli.
* [#11066](https://github.com/apache/nuttx/pull/11066) simwifi: host wlan0 obtains ip and set dns for wlan0 in the defwan wlan0
* [#11108](https://github.com/apache/nuttx/pull/11108) simwifi: Transfer the special characters in ssid.
* [#11104](https://github.com/apache/nuttx/pull/11104) simwifi: Support that get the connected Chinese essid.
* [#11051](https://github.com/apache/nuttx/pull/11051) simwifi: Support that simwifi connects to the hidden ssid.
* [#11171](https://github.com/apache/nuttx/pull/11171) Replace [enter|leave]_critical_section with up_irq_[save|restore]
* [#11219](https://github.com/apache/nuttx/pull/11219) Remove the wrong comment from up_allocate_heap
* [#11205](https://github.com/apache/nuttx/pull/11205) usb_rawgadget: remove halt operation
* [#10910](https://github.com/apache/nuttx/pull/10910) Update Fix more generic for platforms that do not have execinfo.h
* [#11030](https://github.com/apache/nuttx/pull/11030) wifidriver: Fix the scan error.
* [#10886](https://github.com/apache/nuttx/pull/10886) wifidriver: Support the sim wifi.
x86_64
* [#10899](https://github.com/apache/nuttx/pull/10899) Fix idle stack assignment
xtensa
* [#11141](https://github.com/apache/nuttx/pull/11141) esp32: ble: Enable the BLE interrupt during an SPI flash operation
* [#10859](https://github.com/apache/nuttx/pull/10859) esp32: ble: Fix task_create_wrapper CPU core ID passed as argument
* [#10851](https://github.com/apache/nuttx/pull/10851) esp32: irq: Fix erroneous interrupt allocation for each CPU core
* [#11139](https://github.com/apache/nuttx/pull/11139) esp32s2: Add rtc heap support
* [#11300](https://github.com/apache/nuttx/pull/11300) esp32s2: Add RTC support
* [#11138](https://github.com/apache/nuttx/pull/11138) esp32s2: Add SPI slave support
* [#10850](https://github.com/apache/nuttx/pull/10850) esp32s2: add UART RS485 support
* [#10823](https://github.com/apache/nuttx/pull/10823) esp32s2: Add support to TWAI/CANBus controller
* [#11431](https://github.com/apache/nuttx/pull/11431) esp32s2: Add xtwdt and rwdt support
* [#10873](https://github.com/apache/nuttx/pull/10873) esp32s2: ESP32-S3 I2C improvements
* [#11259](https://github.com/apache/nuttx/pull/11259) esp32s3: Add rtc heap support
* [#11180](https://github.com/apache/nuttx/pull/11180) esp32s3: Add RWDT support
* [#11287](https://github.com/apache/nuttx/pull/11287) esp32s3: Add SPIRAM high memory support
* [#11179](https://github.com/apache/nuttx/pull/11179) esp32s3: Add XTWDT support
* [#10854](https://github.com/apache/nuttx/pull/10854) esp32s3: ble: enable the BLE interrupt during a SPI flash operation
* [#11331](https://github.com/apache/nuttx/pull/11331) esp32s3: enable LIBC_ARCH_ATOMIC
* [#11299](https://github.com/apache/nuttx/pull/11299) esp32s3: Fix esp32s3 mcuboot ota crash
* [#11136](https://github.com/apache/nuttx/pull/11136) esp32s3: Fix issue regarding IRAM-enabled ISRs by fixing the linker
* [#11285](https://github.com/apache/nuttx/pull/11285) esp32s3: Fix some ESP32S3 module reboot and QVL issues
* [#10882](https://github.com/apache/nuttx/pull/10882) esp32s3: Fix the os halt issue when esp32s3 wlan has high-speed or long time d…
* [#11427](https://github.com/apache/nuttx/pull/11427) esp32s3: Fixed bbpll not calibrated from bootloader issue
* [#11328](https://github.com/apache/nuttx/pull/11328) esp32s3: GPIO clear pending interrupt status before enable IRQ
* [#11329](https://github.com/apache/nuttx/pull/11329) esp32s3: QSPI disable DMA when sending command to slave
* [#11286](https://github.com/apache/nuttx/pull/11286) esp32s3: Invalidate cache if the flash address used has a cache mapping.
* [#11144](https://github.com/apache/nuttx/pull/11144) esp32s3: Support malloc from external RAM and internal RAM
* [#11157](https://github.com/apache/nuttx/pull/11157) esp32s3: Support multiple PHY init data bin
* [#11434](https://github.com/apache/nuttx/pull/11434) esp32s3: Support reading encrypted partitions
* [#11052](https://github.com/apache/nuttx/pull/11052) esp32s3: Support to read data from flash to PSRAM
* [#11340](https://github.com/apache/nuttx/pull/11340) esp32s3: Tasks use SPIRAM as stack can do SPI flash read/write/erase/map/unmap
* [#11428](https://github.com/apache/nuttx/pull/11428) espressif/rmt: Implement a common RMT (Remote Control) driver for xtensa-based devices.
Driver Support
New Driver Support
* [#10770](https://github.com/apache/nuttx/pull/10770) drivers: add regmap subsystems support.
* [#10902](https://github.com/apache/nuttx/pull/10902) motor: Add stepper interface
* [#11253](https://github.com/apache/nuttx/pull/11253) mtd: Adds support to W25Q20CL memory.
* [#11149](https://github.com/apache/nuttx/pull/11149) mtd: mx25rxx: add support for MX25L25673G chip
* [#11422](https://github.com/apache/nuttx/pull/11422) net: ksz9477: Add simple port-based static VLAN configuration
* [#11339](https://github.com/apache/nuttx/pull/11339) net: lan9250: Add LAN9250 driver(SPI and QSPI mode)
* [#11280](https://github.com/apache/nuttx/pull/11280) sensors: Add support for MS5607
* [#10864](https://github.com/apache/nuttx/pull/10864) sensors: max31865:RTD-to-Digital Converter
* [#10914](https://github.com/apache/nuttx/pull/10914) stepper: add DRV8825
* [#11228](https://github.com/apache/nuttx/pull/11228) tee: add optee client driver module
Drivers Improvements
* [#11071](https://github.com/apache/nuttx/pull/11071) Kconfigs: rename {Rpmsg|rpmsg} to RPMGS
* [#11061](https://github.com/apache/nuttx/pull/11061) can: Add new ioctls
* [#10845](https://github.com/apache/nuttx/pull/10845) foc: foc_dummy.c: update dummy device state only if dev opened
* [#11176](https://github.com/apache/nuttx/pull/11176) foc: return scaling factor for phase currents and BEMF via ioctl
* [#10808](https://github.com/apache/nuttx/pull/10808) ioexpander: Minor fix for ioexpander driver
* [#11147](https://github.com/apache/nuttx/pull/11147) lcd: add stride support for LCD driver
* [#11185](https://github.com/apache/nuttx/pull/11185) lcd: change lcd stride from pixel to bytes
* [#10926](https://github.com/apache/nuttx/pull/10926) math: mpi: add mpi driver in math
* [#11240](https://github.com/apache/nuttx/pull/11240) misc: Rpmsgblk function optimization
* [#11220](https://github.com/apache/nuttx/pull/11220) mmcsd: mmcsd_sdinitialize should save csd register into priv->csd
* [#10909](https://github.com/apache/nuttx/pull/10909) mtd: filemtd:Fix teardown return error number EINVAL
* [#11041](https://github.com/apache/nuttx/pull/11041) mtd: get mtd_geometry_s.model for mtd partition and optimize code
* [#11187](https://github.com/apache/nuttx/pull/11187) mtd: s25fl1: fix compile warnings caused by incorrect variable print format
* [#11370](https://github.com/apache/nuttx/pull/11370) mtd: w25q: add nxsig_usleep to busy waiting in w25qxxxjv_erase_sector()
* [#11391](https://github.com/apache/nuttx/pull/11391) net: qemu/wifi: Add the virtual wifi function on the emulator.
* [#11216](https://github.com/apache/nuttx/pull/11216) net: skeleton.c doesn't compile without this patch if ioctls are enabled
* [#10907](https://github.com/apache/nuttx/pull/10907) note: Change 0/1 to false/true
* [#11153](https://github.com/apache/nuttx/pull/11153) note: delete sched_note_flatten
* [#10840](https://github.com/apache/nuttx/pull/10840) note: optimize note performance
* [#10920](https://github.com/apache/nuttx/pull/10920) note: remove remaining event code
* [#11074](https://github.com/apache/nuttx/pull/11074) power: pm: use pm_staytimeout() in greedy_governor_activity()
* [#11132](https://github.com/apache/nuttx/pull/11132) rptun: check the status before stop remote proc
* [#11222](https://github.com/apache/nuttx/pull/11222) rtc: RTC driver improvement
* [#10831](https://github.com/apache/nuttx/pull/10831) rtt: make RTT console optional
* [#11296](https://github.com/apache/nuttx/pull/11296) segger: rtt: correct macro name to avoid unable to change default mode
* [#11419](https://github.com/apache/nuttx/pull/11419) sensors: mx56xx: Add support for second order compensation
* [#11426](https://github.com/apache/nuttx/pull/11426) sensors: mx56xx: Fix threshold and calculation
* [#11178](https://github.com/apache/nuttx/pull/11178) serial: uart_tcsendbreak: Remove cancel point, as tcsendbreak is not one
* [#11402](https://github.com/apache/nuttx/pull/11402) syslog: ramlog: improve ramlog performance
* [#11392](https://github.com/apache/nuttx/pull/11392) syslog: ramlog: multi readers
* [#10890](https://github.com/apache/nuttx/pull/10890) syslog: ramlog: remove sched_[un]lock and rl_nwaiters
* [#11186](https://github.com/apache/nuttx/pull/11186) timers: Rewrite adjtime() implementation to work for RTC and tickless kernel
* [#11356](https://github.com/apache/nuttx/pull/11356) usbdev: Add callback for CONFIG_USBDEV_SOFINTERRUPT
* [#11042](https://github.com/apache/nuttx/pull/11042) usbdev: config USBDEV_TRACE_INITIALIDSET when disbale USBDEV_TRACE
* [#11161](https://github.com/apache/nuttx/pull/11161) usbdev: Solve some problems of USB hotplug
* [#10985](https://github.com/apache/nuttx/pull/10985) usrsock: Make the field of usrsock_request native alignment
* [#11103](https://github.com/apache/nuttx/pull/11103) usrsock: rpmsg_server: Keep msg order in recursive call
* [#11107](https://github.com/apache/nuttx/pull/11107) usrsock: socket fallback with ENETDOWN
* [#10874](https://github.com/apache/nuttx/pull/10874) video: fb: Add fb_register_device
* [#10812](https://github.com/apache/nuttx/pull/10812) video: goldfish: Remove the vsync residual code
* [#11380](https://github.com/apache/nuttx/pull/11380) video: goldfish: optimize goldfish fb register
* [#11249](https://github.com/apache/nuttx/pull/11249) video: video.c: modify set_buf call seqence in start_capture function.
* [#11224](https://github.com/apache/nuttx/pull/11224) video: wait when the vsync queue is full in FBIO_WAITFORVSYNC
* [#11382](https://github.com/apache/nuttx/pull/11382) virtio: Support for setting MAC addresses of the virtio-net interfaces
* [#11385](https://github.com/apache/nuttx/pull/11385) virtio: virtio-gpu: convert virito-gpu fb_register to virtio_gpu_fb_register
* [#11201](https://github.com/apache/nuttx/pull/11201) virtio: Virtio Qemu 8.1.2 issues fix
* [#11013](https://github.com/apache/nuttx/pull/11013) wireless: bluetooth: Add option to set the HCI TX thread affinity while running with SMP enabled
* [#11072](https://github.com/apache/nuttx/pull/11072) wireless: bluetooth: rpmsg depends on RPTUN
Board Support
New Board Support
arm
* [#10987](https://github.com/apache/nuttx/pull/10987) gd32f4: add gd32f470i board support
* [#11094](https://github.com/apache/nuttx/pull/11094) stm32: add support to LINUM-STM32H753BI board
* [#10990](https://github.com/apache/nuttx/pull/10990) stm32: add support to STM32F401RC-RS485 board
* [#11358](https://github.com/apache/nuttx/pull/11358) stm32h7: linum-stm32h753bi: Add modbus example using usart6
* [#11276](https://github.com/apache/nuttx/pull/11276) seeed-xiao-rp2040: Add initial board support
xtensa
* [#10976](https://github.com/apache/nuttx/pull/10976) Add ESP32-2432S028 board
* [#10928](https://github.com/apache/nuttx/pull/10928) esp32s3-box: Support hardware version 3
risc-v
* [#11379](https://github.com/apache/nuttx/pull/11379) Initial support for CanMV-k230 board
* [#11377](https://github.com/apache/nuttx/pull/11377) Add support for PINE64 Ox64 BL808 SBC
Board Improvements
* [#11056](https://github.com/apache/nuttx/pull/11056) Modify test "ramtest" path
* [#11192](https://github.com/apache/nuttx/pull/11192) remove obsolete CONFIG_EXAMPLES_FOC_IPHASE_ADC option
arm
* [#11101](https://github.com/apache/nuttx/pull/11101) cxd56xx: Add cxd5610 gnss driver
* [#11373](https://github.com/apache/nuttx/pull/11373) gd32f4xx: change gd32f470z board code
* [#11193](https://github.com/apache/nuttx/pull/11193) imx6: Fix sabre-6quad:libcxx
* [#11310](https://github.com/apache/nuttx/pull/11310) nrf52: nrf52832-dk: add timer example
* [#10835](https://github.com/apache/nuttx/pull/10835) nrf52: remove CONFIG_ARMV7M_SYSTICK form tickless configs
* [#11150](https://github.com/apache/nuttx/pull/11150) sama5: Add QSPI support SAMA5
* [#11151](https://github.com/apache/nuttx/pull/11151) sama5: sama5d2-xult: add support for QSPI flash and nxffs
* [#11117](https://github.com/apache/nuttx/pull/11117) stm32: b-g431b-esc1: don't use CONFIG_STM32_USE_LEGACY_PINMAP=y
* [#11306](https://github.com/apache/nuttx/pull/11306) stm32h7: fix config conflict
* [#11214](https://github.com/apache/nuttx/pull/11214) stm32h7: linum-stm32h753bi: Add support to RTC and alarm
* [#11167](https://github.com/apache/nuttx/pull/11167) stm32h7: linum-stm32h753bi: Added suport to userlerds library.
* [#11265](https://github.com/apache/nuttx/pull/11265) stm32f4: stm32f401rc-rs485: Add sdcard support
* [#11217](https://github.com/apache/nuttx/pull/11217) stm32f4: stm32f401rc-rs485: Add buttons support
* [#11169](https://github.com/apache/nuttx/pull/11169) stm32f4: stm32f401rc-rs485: add support to userleds
* [#11255](https://github.com/apache/nuttx/pull/11255) stm32f4: stm32f401rc-rs485: Fix f401rc flash size
risc-v
* [#10736](https://github.com/apache/nuttx/pull/10736) esp32c3: pm: Let PM_PROCFS depend on FS_PROCFS_REGISTER
* [#11418](https://github.com/apache/nuttx/pull/11418) esp32c6: Add ostest defconfig
* [#11096](https://github.com/apache/nuttx/pull/11096) mpfs: Add option for board specific PMP configuration
* [#11262](https://github.com/apache/nuttx/pull/11262) qemu-rv: rv-virt/knsh: Set correct RAM_START and RAM_SIZE
* [#11397](https://github.com/apache/nuttx/pull/11397) qemu-rv: Virtio sound
sim
* [#10960](https://github.com/apache/nuttx/pull/10960) fix Cygwin/MSYS2 ld: unrecognized option '-z'
* [#11290](https://github.com/apache/nuttx/pull/11290) nxscope: remove CONFIG_ALLSYMS=y
xtensa
* [#11142](https://github.com/apache/nuttx/pull/11142) esp32: Add LVGL defconfig
* [#11229](https://github.com/apache/nuttx/pull/11229) esp32: Add support enconder to ESP32-2432S028
* [#10961](https://github.com/apache/nuttx/pull/10961) esp32: Add wifishare board config and documentation
* [#10996](https://github.com/apache/nuttx/pull/10996) esp32: Rename Shift game to Brickmatch and add an board example to esp32-devkitc
* [#11417](https://github.com/apache/nuttx/pull/11417) esp32<|s2|s3>_board_spiflash: Fix error message about SmartFS init
* [#11425](https://github.com/apache/nuttx/pull/11425) esp32s2: Increase init task stack size to 3072
* [#11156](https://github.com/apache/nuttx/pull/11156) esp32s3: Link stack checking function and data to SRAM when enable flash or PSRAM driver
* [#11342](https://github.com/apache/nuttx/pull/11342) esp32s3: add esp32s3-devkit:toywasm kconfig
* [#11295](https://github.com/apache/nuttx/pull/11295) esp32s3: Add rtc defconfig
* [#10885](https://github.com/apache/nuttx/pull/10885) ESP32S3-EYE: GPIO and button support
* [#10884](https://github.com/apache/nuttx/pull/10884) ESP32-S3-EYE: I2C, SPI and LCD support
* [#10883](https://github.com/apache/nuttx/pull/10883) ESP32-S3-EYE: Wifi
File System
Improvements
* [#10995](https://github.com/apache/nuttx/pull/10995) Change inode_checkflags to static function
* [#11445](https://github.com/apache/nuttx/pull/11445) Fix hostfs after uid/gid changes
* [#11433](https://github.com/apache/nuttx/pull/11433) fat: Fix number of data clusters usable for fat driver
* [#11196](https://github.com/apache/nuttx/pull/11196) fat: fix ubsan warning of shift-out-of-bounds
* [#10706](https://github.com/apache/nuttx/pull/10706) fs_epoll: several epoll problems fix
* [#11125](https://github.com/apache/nuttx/pull/11125) fs_files.c: make sure that fs_getfilep is not interrupted when holding mutex
* [#11349](https://github.com/apache/nuttx/pull/11349) fs_gettype:add zipfs magic
* [#11446](https://github.com/apache/nuttx/pull/11446) hostfs:fix structure layout inconsistency in hostfs
* [#11090](https://github.com/apache/nuttx/pull/11090) inode: Change inode_unlink to static function
* [#11188](https://github.com/apache/nuttx/pull/11188) inode: check file list before memcpy
* [#11140](https://github.com/apache/nuttx/pull/11140) inode: improve the performance of get file pointer
* [#11318](https://github.com/apache/nuttx/pull/11318) proc: Fix groupfd to get fd by group instead of current tcb
* [#11449](https://github.com/apache/nuttx/pull/11449) procfs add poll support
* [#11360](https://github.com/apache/nuttx/pull/11360) procfs/cpuinfo: Zero copylen in cpuinfo_read
* [#11039](https://github.com/apache/nuttx/pull/11039) rename: fix use after free issue about rename
* [#11451](https://github.com/apache/nuttx/pull/11451) smartfs: Add necessary aligned access in smartfs_rename()
* [#11248](https://github.com/apache/nuttx/pull/11248) spiffs: correct mutex lock cycle of spiffs
* [#10804](https://github.com/apache/nuttx/pull/10804) support zipfs,can mount zipfile
* [#11232](https://github.com/apache/nuttx/pull/11232) tmpfs: fix an integer overflow
* [#10880](https://github.com/apache/nuttx/pull/10880) vfs: add munmap logic to pseudofs
Networking
Improvements
* [#10813](https://github.com/apache/nuttx/pull/10813) Add CONFIG_NET_ICMPv6_ROUTER_LIFETIME
* [#10893](https://github.com/apache/nuttx/pull/10893) allow icmpv6 and udp to find the dev by the ifindex with s_boundto.
* [#10916](https://github.com/apache/nuttx/pull/10916) Fix RNDIS compilation error
* [#10819](https://github.com/apache/nuttx/pull/10819) local: Fix the problem that local udp socketpair cannot release fifo files.
* [#11443](https://github.com/apache/nuttx/pull/11443) local: make the call return of each process consistent with linux
* [#11015](https://github.com/apache/nuttx/pull/11015) local: Support SO_SNDBUF option in getsockopt
* [#11289](https://github.com/apache/nuttx/pull/11289) loopback: Fix flags of lo device
* [#11324](https://github.com/apache/nuttx/pull/11324) icmpv6:Optimize the process of obtaining the IPv6 address through RA.
* [#11010](https://github.com/apache/nuttx/pull/11010) icmpv6: Fix net mask logic in icmpv6_setaddresses
* [#11197](https://github.com/apache/nuttx/pull/11197) igmp: call IFF_SET_IPv4 when igmp_send
* [#11384](https://github.com/apache/nuttx/pull/11384) ipv6: Fix source address with many addresses in same network
* [#11378](https://github.com/apache/nuttx/pull/11378) ipv6: Move xxx_ipv6multicast from arch to common code
* [#10894](https://github.com/apache/nuttx/pull/10894) netdb: When set a dns nameserver which already exists, retrun OK
* [#11076](https://github.com/apache/nuttx/pull/11076) netconfig: Enable SOCK_CLOEXEC for ioctl sockets
* [#11396](https://github.com/apache/nuttx/pull/11396) netdev: Modify the logic for setting the IFF_RUNNING status of interfaces.
* [#11110](https://github.com/apache/nuttx/pull/11110) Simplify getting value for different domain
* [#11054](https://github.com/apache/nuttx/pull/11054) Support multiple IPv6 address per netdev
* [#11406](https://github.com/apache/nuttx/pull/11406) tcp: Recover from iob shortage with TCP_WRITE_BUFFERS
* [#11126](https://github.com/apache/nuttx/pull/11126) tcp: Support initial sequence number described in RFC 6528
* [#11009](https://github.com/apache/nuttx/pull/11009) tun: Fix the error of calling tun_close when tun_txavail or tun_txavail_work is executed
* [#10986](https://github.com/apache/nuttx/pull/10986) tun: Fix the error of calling tun_close when tun_txavail or tun_txavail_work is executed
* [#11372](https://github.com/apache/nuttx/pull/11372) udp: Add check when sending too big packet without IP frag
* [#11210](https://github.com/apache/nuttx/pull/11210) udp: Add support for SO_TIMESTAMP
* [#11120](https://github.com/apache/nuttx/pull/11120) udp: modify ipv4 multicast to allow different conn to join simultaneously
* [#10878](https://github.com/apache/nuttx/pull/10878) usersock: Return -ENOSUPP directly if domain isn't equal to PF_INET/PF_INET6
Security Issues Fixed In This Release
Compatibility Concerns
* [#10605](https://github.com/apache/nuttx/pull/10605)  Implement ticket spinlock
A proposal to slove #1488
Implement ticket spinlock.
* [#10861](https://github.com/apache/nuttx/pull/10861) spinlock: Add spin_lock_init and spin_is_locked macro
align with Linux api naming.
* [#11102](https://github.com/apache/nuttx/pull/11102) sched: explicitly select the cpuload clock source configuration
Different configurations require different dependencies.
Explicitly select dependencies to avoid automatically selecting
inappropriate configurations.
* [#11334](https://github.com/apache/nuttx/pull/11334) stm32h7_adc: Dynamically set clock prescaler and BOOST
First commit is aligning naming and is a breaking change.
* [#10827](https://github.com/apache/nuttx/pull/10827) Improve adjtime() functionality
Prior pull request #9084 and issue #8858 added basic adjtime()
support for the SAMv7 platform.
This pull request adds support for STM32 platform.
In addition I have made a few changes to the adjtime() configuration
options:
1) Previously adjustments less than 1 microsecond per tick would be
   completely ignored. Now they are applied over a shorter period at
   a rate of 1 us per tick.
2) Previously CLOCK_ADJTIME_PERIOD was in units of 1/100th of second.
   Change to milliseconds to be more generally useful unit.
   Change setting name to CLOCK_ADJTIME_PERIOD_MS to make the unit change
   easier to notice.
3) Previously CLOCK_ADJTIME_SLEWLIMIT was in percentage.
   Most clock crystals have better accuracy than 1%, so the minimum slew
   rate was excessive. Change to CLOCK_ADJTIME_SLEWLIMIT_PPM with setting
   value in parts per million.
4) No need to use floating point math in clock_adjtime.c.
Impact
Users who have used CLOCK_ADJTIME_PERIOD and CLOCK_ADJTIME_SLEWLIMIT 
settings should update their configuration. New CLOCK_ADJTIME_PERIOD_MS is
10x the old period value, and new CLOCK_ADJTIME_SLEWLIMIT_PPM is 10000 times
the old slewlimit.
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