Apache NuttX is a mature, real-time embedded operating system (RTOS) https://nuttx.apache.org/
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Bowen Wang c4e5ac00e3 Documentation/vhost: add Vhost framework documentation
Add comprehensive documentation for the Vhost framework, which serves
as the VirtIO backend implementation in NuttX for cross-core communication.

The documentation includes:
- Overview and comparison with Linux Vhost and QEMU VirtIO Device
- Three-layer architecture (Service, Framework, Transport)
- Driver/Device registration and matching workflow
- Source code directory structure
- Complete API reference (data structures, core APIs, macro APIs)

Signed-off-by: Bowen Wang <wangbowen6@xiaomi.com>
2026-02-04 02:32:02 +08:00
.github sched: Remove legacy sched_resumescheduler.c 2026-01-27 18:21:12 +08:00
arch arm64: Add kmalloc header for arch timer 2026-02-03 11:45:31 -05:00
audio fs/file: unify prefix about file_xxx api, like file_open, file_ioctl 2025-06-12 18:12:42 +08:00
binfmt sched/task: move kernel stack allocation to task initialization 2026-01-18 23:05:11 +08:00
boards drivers/virtio and vhost: auto-select parent config from sub-drivers 2026-02-04 02:32:02 +08:00
cmake cmake(bugfix):change default compile obj extension to .o 2026-01-27 20:54:26 +08:00
crypto crypto/cryptosoft: Fix HMAC-SHA when a long key is used 2026-01-28 13:14:05 -03:00
Documentation Documentation/vhost: add Vhost framework documentation 2026-02-04 02:32:02 +08:00
drivers drivers/vhost: add missing SCHED_WORKQUEUE dependency 2026-02-04 02:32:02 +08:00
dummy
fs fs/9pfs: use virtio_read_config_bytes() to read the tag in config space 2026-01-30 08:11:57 -03:00
graphics graphics/nxterm: Use small lock to protect resource in graphics. 2026-01-27 17:59:07 +08:00
include include/nuttx/virtio: allow common virtio helpers to be used by vhost 2026-02-04 02:32:02 +08:00
libs cmake:add lib_psa_set/getstackaddr file to CMakeLists.txt 2026-02-03 14:40:00 +01:00
mm mm/tlfs: Account initial size of struct mm_heap_s 2026-01-27 21:27:53 +08:00
net net/netdev: a valid netdev for ipv4 should have ipv4 addr configured 2026-02-02 13:57:56 +08:00
openamp lib/rpmsg: add priority support for rpmsg endpoint 2026-01-30 07:50:11 -03:00
pass1
sched sched/semaphore: Add debug assert to detect mutex recursion. 2026-02-03 11:56:24 -05:00
syscall syscall: add sched_note_event_ip syscall for instrumentation dump 2026-01-28 02:06:23 +08:00
tools tools/nxstyle: add phy62xx/uart.c into style white list 2026-02-02 21:17:20 +08:00
video
wireless net/wireless: fix compile warning 2025-12-25 18:05:33 +08:00
.asf.yaml github: master branch protection tune. 2025-05-07 18:37:13 -05:00
.codespell-ignore-lines net/icmpv6: replace net_lock with conn_lock and conn_lock_dev 2025-12-29 09:42:18 +08:00
.codespellrc codespellrc: add ist to ignorelist 2025-10-14 17:42:01 +08:00
.editorconfig .editorconfig: fix character encoding property specification 2025-11-28 19:12:13 +08:00
.gitignore gitignore: add more vim swap files 2025-06-18 15:44:51 -04:00
.gitmessage docs/contributing: Add a commit message template 2025-06-03 17:33:24 +08:00
.pre-commit-config.yaml
.yamllint
AUTHORS AUTHORS: add Michal Lenc 2025-12-03 08:46:33 -03:00
CMakeLists.txt boards/arm/stm32: Fix CMake build for protected mode on stm32f4discovery 2026-02-02 13:24:34 +08:00
CONTRIBUTING.md style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
INVIOLABLES.md
Kconfig Kconfig: Add ALLOW_CUSTOM_PERMISSIVE_COMPONENTS option 2026-01-20 02:15:19 +08:00
LICENSE style: fix spelling in code comments and strings 2025-05-23 10:48:41 +08:00
Makefile
NOTICE
README.md
ReleaseNotes

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Apache NuttX is a real-time operating system (RTOS) with an emphasis on standards compliance and small footprint. Scalable from 8-bit to 64-bit microcontroller environments, the primary governing standards in NuttX are POSIX and ANSI standards. Additional standard APIs from Unix and other common RTOSs (such as VxWorks) are adopted for functionality not available under these standards, or for functionality that is not appropriate for deeply-embedded environments (such as fork()).

For brevity, many parts of the documentation will refer to Apache NuttX as simply NuttX.

Getting Started

First time on NuttX? Read the Getting Started guide! If you don't have a board available, NuttX has its own simulator that you can run on terminal.

Documentation

You can find the current NuttX documentation on the Documentation Page.

Alternatively, you can build the documentation yourself by following the Documentation Build Instructions.

The old NuttX documentation is still available in the Apache wiki.

Supported Boards

NuttX supports a wide variety of platforms. See the full list on the Supported Platforms page.

Contributing

If you wish to contribute to the NuttX project, read the Contributing guidelines for information on Git usage, coding standard, workflow and the NuttX principles.

License

The code in this repository is under either the Apache 2 license, or a license compatible with the Apache 2 license. See the License Page for more information.