tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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LoongArch: Use UNWIND_HINT_END_OF_STACK for entry points

kernel_entry() and smpboot_entry() are the last frames for ORC unwinder,
so it is proper to use the annotation UNWIND_HINT_END_OF_STACK for them.

Link: https://lore.kernel.org/lkml/ots6w2ntyudj5ucs5eowncta2vmfssatpcqwzpar3ekk577hxi@j45dd4dmwx6x/
Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>

authored by

Tiezhu Yang and committed by
Huacai Chen 1b2f4706 d5be4469

+2
+2
arch/loongarch/kernel/head.S
··· 42 42 .align 12 43 43 44 44 SYM_CODE_START(kernel_entry) # kernel entry point 45 + UNWIND_HINT_END_OF_STACK 45 46 46 47 SETUP_TWINS 47 48 SETUP_MODES t0 ··· 114 113 * function after setting up the stack and tp registers. 115 114 */ 116 115 SYM_CODE_START(smpboot_entry) 116 + UNWIND_HINT_END_OF_STACK 117 117 118 118 SETUP_TWINS 119 119 SETUP_MODES t0