Marco Casaroli 1bc7cfeeb1 arch/xtensa: Provide POSIX fork() on the ESP32-S3. ... up_addrenv_fork() duplicates an address environment into freshly allocated pages mapped at the same virtual addresses. The text, data and heap regions of the source are walked one page at a time and copied into fresh pages hung off the child's own directory, using the two kmap slots that CONFIG_ARCH_KMAP_NPAGES reserves for exactly this. xtensa_fork.c already took both paths: a child that keeps the parent's stack addresses needs no relocation, which is what a duplicated address environment gives it. Only the hook and the Kconfig default were missing. fork() is offered on a kernel build, which is the only mode with per-process address environments. Verified on an ESP32-S3-WROOM-2 with esp32s3-devkit:kernel_oct. ostest reports "Parent and child had independent memory" and exits with status 0. Assisted-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>		2026-09-26 11:13:57 -03:00
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include	xtensa/esp32s3: Implement per-process address environments.	2026-09-26 11:13:57 -03:00
src	arch/xtensa: Provide POSIX fork() on the ESP32-S3.	2026-09-26 11:13:57 -03:00
CMakeLists.txt	cmake:implement CMake build of xtensa arch	2024-11-02 18:08:38 +08:00
Kconfig	xtensa/esp32s3: Wire the chip into the kernel build.	2026-09-26 11:13:57 -03:00