arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:85: Warning: overflow in branch to __restore_all; converted into longer instruction sequence

arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:85: Warning: overflow in branch to __restore_all; converted into longer instruction sequence

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   4a298a43f5e339f48d2dda0665c02b88ee9a4e03
commit: f74f8bb246cf22f27752977da62079cb615f55b2 rv: Add rtapp_sleep monitor
date:   5 months ago
config: sh-randconfig-002-20251214 (https://download.01.org/0day-ci/archive/20251214/202512140648.pAbemH3J-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251214/202512140648.pAbemH3J-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512140648.pAbemH3J-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S: Assembler messages:
>> arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:85: Warning: overflow in branch to __restore_all; converted into longer instruction sequence
   arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:357: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence
   arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S:360: Warning: overflow in branch to syscall_exit_work; converted into longer instruction sequence


vim +85 arch/sh/kernel/cpu/sh4/../sh3/../../entry-common.S

de39840646a223 Yoshinori Sato 2006-11-05  63  
de39840646a223 Yoshinori Sato 2006-11-05  64  	.align	2
de39840646a223 Yoshinori Sato 2006-11-05  65  ret_from_exception:
cafb0ddac60556 Matt Fleming   2009-08-02  66  	CFI_STARTPROC simple
cafb0ddac60556 Matt Fleming   2009-08-02  67  	CFI_DEF_CFA r14, 0
cafb0ddac60556 Matt Fleming   2009-08-02  68  	CFI_REL_OFFSET 17, 64
142698282ceb68 Matt Fleming   2010-01-27  69  	CFI_REL_OFFSET 15, 60
cafb0ddac60556 Matt Fleming   2009-08-02  70  	CFI_REL_OFFSET 14, 56
142698282ceb68 Matt Fleming   2010-01-27  71  	CFI_REL_OFFSET 13, 52
142698282ceb68 Matt Fleming   2010-01-27  72  	CFI_REL_OFFSET 12, 48
142698282ceb68 Matt Fleming   2010-01-27  73  	CFI_REL_OFFSET 11, 44
142698282ceb68 Matt Fleming   2010-01-27  74  	CFI_REL_OFFSET 10, 40
142698282ceb68 Matt Fleming   2010-01-27  75  	CFI_REL_OFFSET 9, 36
142698282ceb68 Matt Fleming   2010-01-27  76  	CFI_REL_OFFSET 8, 32
de39840646a223 Yoshinori Sato 2006-11-05  77  	preempt_stop()
de39840646a223 Yoshinori Sato 2006-11-05  78  ENTRY(ret_from_irq)
de39840646a223 Yoshinori Sato 2006-11-05  79  	!
de39840646a223 Yoshinori Sato 2006-11-05  80  	mov	#OFF_SR, r0
de39840646a223 Yoshinori Sato 2006-11-05  81  	mov.l	@(r0,r15), r0	! get status register
de39840646a223 Yoshinori Sato 2006-11-05  82  	shll	r0
de39840646a223 Yoshinori Sato 2006-11-05  83  	shll	r0		! kernel space?
de39840646a223 Yoshinori Sato 2006-11-05  84  	get_current_thread_info r8, r0
de39840646a223 Yoshinori Sato 2006-11-05 @85  	bt	resume_kernel	! Yes, it's from kernel, go back soon
de39840646a223 Yoshinori Sato 2006-11-05  86  

:::::: The code at line 85 was first introduced by commit
:::::: de39840646a223ae13a346048c280b7c871bf56e sh: Exception vector rework and SH-2/SH-2A support.

:::::: TO: Yoshinori Sato <ysato@users.sourceforge.jp>
:::::: CC: Paul Mundt <lethal@linux-sh.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki