masayuki2009 opened a new pull request #2042:
URL: https://github.com/apache/incubator-nuttx/pull/2042
## Summary
- This PR fixes interrupt stack handling for ARM SMP
- This PR consists of following 4 commits
- commit 1: arch: imx6: Fix style warnings in chip.h
- commit 2: arch: arm: Fix interrupt stack handlings for SMP
- Modify arm_intstack_base() to return "top" of the IRQ stack for the
current CPU
- This change fixes IRQ stack dump information for ARM SMP
- Add arm_intstack_alloc() to return "bottom" of the IRQ stack for the
current CPU
- Also, these functions are now implemented in xxx_irq.c
(imx/cxd56/lc823450)
- up_color_intstack() and up_check_intstack() now call arm_intstack_alloc()
- These semantics are now consistent with non-SMP case
- up_color_intstack() now initializes whole IRQ stack region for SMP
- Adjust IRQ stack top address for each CPU (e.g. -8)
- Fix setintstack to handle in case of NCPUS=1 (cxd56, lc823450)
- Adjust INTSTACK_SIZE to 8 bytes alignment (cxd56, lc823450)
- Refactor setintstack for lc823450
- Remove old IRQ stack coloring code from up_irqinitialize() (lc823450)
- Introduce g_cpu_intstack_top for lc823450
- Refactor header files
- commit 3: boards: lc823450-xgevk: Update rndis/defconfig
- commit 4: boards: sabre-6quad: Update smp/defconfig
## Impact
- Affects imx6/cxd56xx/lc823450 SMP with interrupt stack enabled
## Testing
- Tested with sabre-6quad:smp (with QEMU, NCPUS=1 and 4)
- Tested with spresense:wifi_smp (NCPUS=1 and 2)
- Tested with lc823450-xgevk:rndis (NCPUS=1 and 2)
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