[PATCH] x86/alternative: fix undefined reference to __ibt_endbr_seal[_end]

[Miaohe Lin]

When I compile the kernel bzImage, there are several compile errors:

ld: arch/x86/kernel/alternative.o: in function
`alternative_instructions':
alternative.c:(.init.text+0x15d): undefined reference to
`__ibt_endbr_seal_end'
ld: alternative.c:(.init.text+0x164): undefined reference to
`__ibt_endbr_seal'

It's because __ibt_endbr_seal and __ibt_endbr_seal_end are not optimized
away when CONFIG_X86_KERNEL_IBT isn't enabled. Remove noinline attribute
to help gcc optimize them away.

Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
---
 arch/x86/kernel/alternative.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index 5cadcea035e0..beaf9fc44e2f 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -624,7 +624,7 @@ void __init_or_module noinline apply_ibt_endbr(s32 *start, s32 *end)
 
 #else
 
-void __init_or_module noinline apply_ibt_endbr(s32 *start, s32 *end) { }
+void __init_or_module apply_ibt_endbr(s32 *start, s32 *end) { }
 
 #endif /* CONFIG_X86_KERNEL_IBT */
 
-- 
2.23.0