anchao opened a new pull request, #21514:
URL: https://github.com/apache/nuttx/pull/21514
## Summary
This updates `ARCH_INTERRUPTSTACK` so that a configured interrupt stack
is represented as a defined positive size instead of using `0` as the
disabled state.
The Kconfig symbol now has an explicit positive range, with `128` as the
lower bound to preserve existing board configurations. Architecture code
is then updated to check whether `CONFIG_ARCH_INTERRUPTSTACK` is defined
instead of comparing its numeric value against zero or small thresholds.
This also replaces local interrupt-stack alignment masks with
`STACK_ALIGN_DOWN()` so interrupt stack sizing follows the common stack
alignment definition consistently.
## Changes
- Add a positive Kconfig range for `ARCH_INTERRUPTSTACK`
- Use `#ifdef CONFIG_ARCH_INTERRUPTSTACK` / `#ifndef
CONFIG_ARCH_INTERRUPTSTACK`
for interrupt stack availability checks
- Remove numeric checks such as `CONFIG_ARCH_INTERRUPTSTACK > 0`,
`<= 3`, or similar disabled-state tests
- Replace ad-hoc alignment expressions with `STACK_ALIGN_DOWN()`
## Testing
sim/nsh
qemu-armv8a/nsh
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