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xtensa: drop dead code from entry.S 

KERNEL_STACK_OVERFLOW_CHECK is incomplete and have never been enabled.
Remove it.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2022-04-17 02:41:13 -07:00
parent a8f0c31fa8
commit 4b81690980
1 changed files with 0 additions and 18 deletions
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18
arch/xtensa/kernel/entry.S
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@ -28,15 +28,6 @@
#include <asm/tlbflush.h>
#include <variant/tie-asm.h>
/* Unimplemented features. */
#undef KERNEL_STACK_OVERFLOW_CHECK
/* Not well tested.
*
* - fast_coprocessor
*/
/*
* Macro to find first bit set in WINDOWBASE from the left + 1
*
@ -350,15 +341,6 @@ KABI_W _bbsi.l a2, 3, 1f
l32i a0, a1, PT_AREG0 # restore saved a0
wsr a0, depc
#ifdef KERNEL_STACK_OVERFLOW_CHECK
/* Stack overflow check, for debugging */
extui a2, a1, TASK_SIZE_BITS,XX
movi a3, SIZE??
_bge a2, a3, out_of_stack_panic
#endif
/*
* This is the common exception handler.
* We get here from the user exception handler or simply by falling through