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lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option
[ Upstream commit 1bf18da621
]
0Day robots reported there is compiling issue for 'csky' ARCH when
CONFIG_DEBUG_FORCE_DATA_SECTION_ALIGNED is enabled [1]:
All errors (new ones prefixed by >>):
{standard input}: Assembler messages:
>> {standard input}:2277: Error: pcrel offset for branch to .LS000B too far (0x3c)
Which was discussed in [2]. And as there is no solution for csky yet, add
some dependency for this config to limit it to several ARCHs which have no
compiling issue so far.
[1]. https://lore.kernel.org/lkml/202202271612.W32UJAj2-lkp@intel.com/
[2]. https://www.spinics.net/lists/linux-kbuild/msg30298.html
Link: https://lkml.kernel.org/r/20220304021100.GN4548@shbuild999.sh.intel.com
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Cc: Guo Ren <guoren@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 2 additions and 1 deletions
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@ -416,7 +416,8 @@ config SECTION_MISMATCH_WARN_ONLY
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If unsure, say Y.
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config DEBUG_FORCE_FUNCTION_ALIGN_64B
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bool "Force all function address 64B aligned" if EXPERT
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bool "Force all function address 64B aligned"
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depends on EXPERT && (X86_64 || ARM64 || PPC32 || PPC64 || ARC)
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help
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There are cases that a commit from one domain changes the function
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address alignment of other domains, and cause magic performance
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