davids5 commented on a change in pull request #2061:
URL: https://github.com/apache/incubator-nuttx/pull/2061#discussion_r510786581
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File path: arch/arm/src/armv7-m/gnu/arm_exception.S
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@@ -321,9 +322,9 @@ exception_common:
.bss
.global g_intstackalloc
.global g_intstackbase
- .align 8
+ .balign 8
g_intstackalloc:
- .skip ((CONFIG_ARCH_INTERRUPTSTACK + 4) & ~7)
+ .skip (CONFIG_ARCH_INTERRUPTSTACK & ~7)
Review comment:
Here is the thing. Nuttx does not support nested interrupt. If a design
is super low on memory (it happens) the interrupt stack allocation has to not
round down. If know the CONFIG (FPU etc) the size of the int stack is a fixed
number . If I ask for That number and get a stack that is less it will over
write memory. This will be a debugging nightmare! Please round it UP
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