Messages in this thread | | | Subject | Re: [PATCH v5 8/8] LoongArch: Add ORC stack unwinder support | From | Tiezhu Yang <> | Date | Thu, 7 Dec 2023 15:08:48 +0800 |
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On 12/02/2023 09:45 PM, Huacai Chen wrote: > Hi, Tiezhu, > > On Wed, Nov 29, 2023 at 9:07 PM Tiezhu Yang <yangtiezhu@loongson.cn> wrote: >> >> The kernel CONFIG_UNWINDER_ORC option enables the ORC unwinder, which is >> similar in concept to a DWARF unwinder. The difference is that the format >> of the ORC data is much simpler than DWARF, which in turn allows the ORC >> unwinder to be much simpler and faster.
...
>> diff --git a/arch/loongarch/kernel/lbt.S b/arch/loongarch/kernel/lbt.S >> index 9c75120a26d8..4d6914f84c7e 100644 >> --- a/arch/loongarch/kernel/lbt.S >> +++ b/arch/loongarch/kernel/lbt.S >> @@ -11,6 +11,7 @@ >> #include <asm/asm-offsets.h> >> #include <asm/errno.h> >> #include <asm/regdef.h> >> +#include <asm/unwind_hints.h> >> >> #define SCR_REG_WIDTH 8 >> >> @@ -153,3 +154,7 @@ SYM_FUNC_END(_restore_ftop_context) >> .L_lbt_fault: >> li.w a0, -EFAULT # failure >> jr ra >> + >> +#ifdef CONFIG_CPU_HAS_LBT >> +STACK_FRAME_NON_STANDARD _restore_ftop_context >> +#endif > This file is only compiled if CONFIG_CPU_HAS_LBT is set, so #ifdef can > be removed.
OK, will remove it in the next version.
Thanks, Tiezhu
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