The __start_rodata_section_aligned is only referenced by the DEBUG_RODATA code, which is only used when the MMU is enabled, but the definition fails on !MMU builds:
arch/arm/kernel/vmlinux.lds:702: undefined symbol `SECTION_SHIFT' referenced in expression This hides the symbol whenever DEBUG_RODATA is disabled. Signed-off-by: Arnd Bergmann <[email protected]> Fixes: 64ac2e74f0b2 ("ARM: 8502/1: mm: mark section-aligned portion of rodata NX") --- arch/arm/kernel/vmlinux.lds.S | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S index 2d7085ae1c2f..bb12933aee22 100644 --- a/arch/arm/kernel/vmlinux.lds.S +++ b/arch/arm/kernel/vmlinux.lds.S @@ -322,12 +322,14 @@ SECTIONS STABS_DEBUG } +#ifdef CONFIG_DEBUG_RODATA /* * Without CONFIG_DEBUG_ALIGN_RODATA, __start_rodata_section_aligned will * be the first section-aligned location after __start_rodata. Otherwise, * it will be equal to __start_rodata. */ __start_rodata_section_aligned = ALIGN(__start_rodata, 1 << SECTION_SHIFT); +#endif /* * These must never be empty -- 2.7.0
