lib/Kconfig.debug | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
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 has been 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
Reported-by: kernel test robot <lkp@intel.com>
Cc: Guo Ren <guoren@kernel.org>
Signed-off-by: Feng Tang <feng.tang@intel.com>
---
lib/Kconfig.debug | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index d6b5c94df099..a270a64e4429 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -401,8 +401,8 @@ config SECTION_MISMATCH_WARN_ONLY
If unsure, say Y.
config DEBUG_FORCE_FUNCTION_ALIGN_64B
- bool "Force all function address 64B aligned" if EXPERT
- depends on PPC || ARM || X86
+ 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
--
2.27.0On Thu, 3 Mar 2022 16:20:48 +0800 Feng Tang <feng.tang@intel.com> wrote: > 0Day robots reported there is compiling issue for 'csky' ARCH > when CONFIG_DEBUG_FORCE_DATA_SECTION_ALIGNED is enabled [1]: > > ... > > --- a/lib/Kconfig.debug > +++ b/lib/Kconfig.debug > @@ -401,8 +401,8 @@ config SECTION_MISMATCH_WARN_ONLY > If unsure, say Y. > > config DEBUG_FORCE_FUNCTION_ALIGN_64B > - bool "Force all function address 64B aligned" if EXPERT > - depends on PPC || ARM || X86 I cannot find a kernel which contains the above line? > + 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
On Thu, Mar 03, 2022 at 05:45:50PM -0800, Andrew Morton wrote:
> On Thu, 3 Mar 2022 16:20:48 +0800 Feng Tang <feng.tang@intel.com> wrote:
>
> > 0Day robots reported there is compiling issue for 'csky' ARCH
> > when CONFIG_DEBUG_FORCE_DATA_SECTION_ALIGNED is enabled [1]:
> >
> > ...
> >
> > --- a/lib/Kconfig.debug
> > +++ b/lib/Kconfig.debug
> > @@ -401,8 +401,8 @@ config SECTION_MISMATCH_WARN_ONLY
> > If unsure, say Y.
> >
> > config DEBUG_FORCE_FUNCTION_ALIGN_64B
> > - bool "Force all function address 64B aligned" if EXPERT
> > - depends on PPC || ARM || X86
>
> I cannot find a kernel which contains the above line?
Sorry. I generated the patch while forgetting to revert the older version
https://lore.kernel.org/lkml/20220228022022.GG4548@shbuild999.sh.intel.com/
Here is the correct versin, thanks!
---
From 817dca1a74778979ba71ed362eac36feab5ac112 Mon Sep 17 00:00:00 2001
From: Feng Tang <feng.tang@intel.com>
Date: Fri, 4 Mar 2022 10:03:40 +0800
Subject: [PATCH] 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 has been 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
Reported-by: kernel test robot <lkp@intel.com>
Cc: Guo Ren <guoren@kernel.org>
Signed-off-by: Feng Tang <feng.tang@intel.com>
---
lib/Kconfig.debug | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 14b89aa37c5c..440fd666c16d 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
--
2.27.0
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