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A small user program that reads or writes one address, by default 0x3fc98000, the base of the ESP32-S3 kernel DRAM region. A user process must not reach it, so the access must fault and only the process must die. "pffault w" makes the access a store, and a second argument names another address. With CONFIG_ESP32S3_PAGEFAULT and CONFIG_ESP32S3_PAGEFAULT_SELFTEST on the kernel side, "pffault r 0x80000000" exercises the recoverable-fault restart path, and "pffault r 0x0" the report path. Assisted-by: Claude Code:claude-opus-5-5 Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com>
28 lines
666 B
Text
28 lines
666 B
Text
#
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# For a description of the syntax of this configuration file,
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# see the file kconfig-language.txt in the NuttX tools repository.
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#
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config EXAMPLES_PFFAULT
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tristate "Page-fault / PMS isolation test"
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default n
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---help---
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A user-space task that deliberately touches a kernel-space address to
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exercise the ESP32-S3 PMS isolation boundary and the kernel's
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recoverable-fault dispatcher.
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if EXAMPLES_PFFAULT
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config EXAMPLES_PFFAULT_PROGNAME
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string "Program name"
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default "pffault"
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config EXAMPLES_PFFAULT_PRIORITY
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int "pffault task priority"
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default 100
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config EXAMPLES_PFFAULT_STACKSIZE
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int "pffault stack size"
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default DEFAULT_TASK_STACKSIZE
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endif
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