| From 2cf39ae4b610574b57658cbe9fa2d0874963e8fd Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Wed, 23 Mar 2022 16:05:50 -0700 |
| Subject: lib/Kconfig.debug: add ARCH dependency for FUNCTION_ALIGN option |
| |
| From: Feng Tang <feng.tang@intel.com> |
| |
| [ Upstream commit 1bf18da62106225dbc47aab41efee2aeb99caccd ] |
| |
| 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> |
| --- |
| lib/Kconfig.debug | 3 ++- |
| 1 file changed, 2 insertions(+), 1 deletion(-) |
| |
| diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug |
| index 5e14e32056ad..166e67b98506 100644 |
| --- a/lib/Kconfig.debug |
| +++ b/lib/Kconfig.debug |
| @@ -416,7 +416,8 @@ 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 |
| -- |
| 2.35.1 |
| |
