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ARM: 8536/1: mm: hide __start_rodata_section_aligned for non-debug builds 

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 <arnd@arndb.de>
Fixes: 64ac2e74f0 ("ARM: 8502/1: mm: mark section-aligned portion of rodata NX")
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Arnd Bergmann 2016-02-19 16:41:55 +01:00 committed by Russell King
parent ac96680d22
commit 91c617d7a3
1 changed files with 2 additions and 0 deletions
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2
arch/arm/kernel/vmlinux.lds.S
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@ -317,12 +317,14 @@ 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