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>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 6c84ef66ceb8a88ccbc1647eb10ac49922723b55..b84c2462fe8d9ec90d93622587e09d89462a0ed6 100644 (file)
--- a/lib/Kconfig.debug
+++ b/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