Messages in this thread | | | From | Max Filippov <> | Subject | [PATCH v2 0/3] xtensa: add division by zero exception handler | Date | Fri, 13 May 2022 20:34:34 -0700 |
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Hello,
this series adds handlers for hardware and artificial division by zero exceptions and improves call0 ABI probing in the presence of unrelated illegal instructions.
Changes v1->v2:
- split ABI probing improvement from the artificial division by 0 - don't limit artificial division by 0 pattern detection to configurations without HW division opcodes, do it always
Max Filippov (3): xtensa: add trap handler for division by zero xtensa: support artificial division by 0 exception xtensa: improve call0 ABI probing
arch/xtensa/include/asm/thread_info.h | 4 +++ arch/xtensa/kernel/asm-offsets.c | 3 ++ arch/xtensa/kernel/entry.S | 5 +++ arch/xtensa/kernel/traps.c | 50 ++++++++++++++++++++++++++- 4 files changed, 61 insertions(+), 1 deletion(-)
-- 2.30.2
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