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The PMS grants and refuses physical addresses, so it never sees an access that no MMU entry translates. The cache answered such an access with zeros and raised nothing, and the task carried on with a value it never should have had. Enable EXTMEM_MMU_ENTRY_FAULT and route the Cache Invalid Access interrupt to the handler that already serves the PMS monitors. An unprivileged task that makes the access is terminated with SIGSEGV; a privileged one still panics. The latch is level triggered, so it is cleared with the others. Read the cause before the clear, so the log tells the two apart: a PMS violation is a refused translation, an MMU entry fault is an access that was never translated. Give the kernel_oct configuration the addresses that examples/sandbox needs to name its targets. Assisted-by: Claude Opus 5 (1M context) <noreply@anthropic.com> Signed-off-by: Marco Casaroli <marco.casaroli@gmail.com> |
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