leisijiandXiang Xiao c28bdaa3c9
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arch/arm/armv7-a: Fix L1 page table entry double-offset in addrenv create region
In arm_addrenv_create_region(), the inner loop already advances vaddr by
MM_PGSIZE for each mapped page, so after filling one L2 page table
(i.e., ENTRIES_PER_L2TABLE pages), vaddr has naturally advanced to the
start of the next 1MB section.  The old code additionally added
i * SECTION_SIZE, causing the L1 entry for the second and subsequent
sections to skip one section each iteration—leaving virtual address
holes in the mapping.

Remove the redundant i * SECTION_SIZE offset so that the L1 entry tracks
the vaddr already maintained by the inner loop, producing contiguous
section mappings.

Signed-off-by: leisiji <2265215145@qq.com>
2026-06-23 10:45:03 +08:00
2026-05-20 15:17:00 +08:00

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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.

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