Commit 1b2f4706 authored Dec 31, 2025 by Tiezhu Yang Committed by Huacai Chen Dec 31, 2025

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>

parent d5be4469

arch/loongarch/kernel/head.S

+2 −0

Original line number	Diff line number	Diff line
		@@ -42,6 +42,7 @@ SYM_DATA(kernel_fsize, .long _kernel_fsize);
		.align 12

		SYM_CODE_START(kernel_entry) # kernel entry point
		UNWIND_HINT_END_OF_STACK

		SETUP_TWINS
		SETUP_MODES t0
		@@ -113,6 +114,7 @@ SYM_CODE_END(kernel_entry)
		* function after setting up the stack and tp registers.
		*/
		SYM_CODE_START(smpboot_entry)
		UNWIND_HINT_END_OF_STACK

		SETUP_TWINS
		SETUP_MODES t0