diff mbox series

[11/41] lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option

Message ID 20220323230551.290F3C340EE@smtp.kernel.org (mailing list archive)
State New
Headers show
Series [01/41] proc: alloc PATH_MAX bytes for /proc/${pid}/fd/ symlinks | expand

Commit Message

Andrew Morton March 23, 2022, 11:05 p.m. UTC 
From: Feng Tang <feng.tang@intel.com>
Subject: lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option

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>
---

 lib/Kconfig.debug |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

--- a/lib/Kconfig.debug~lib-kconfigdebug-add-arch-dependency-for-function_align-option
+++ a/lib/Kconfig.debug
@@ -439,7 +439,8 @@  config SECTION_MISMATCH_WARN_ONLY
 	  If unsure, say Y.
 
 config DEBUG_FORCE_FUNCTION_ALIGN_64B
-	bool "Force all function address 64B aligned" if EXPERT
+	bool "Force all function address 64B aligned"
+	depends on EXPERT && (X86_64 || ARM64 || PPC32 || PPC64 || ARC)
 	help
 	  There are cases that a commit from one domain changes the function
 	  address alignment of other domains, and cause magic performance