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Date:   Sun, 26 Nov 2023 19:31:34 +0800
From:   kernel test robot <lkp@intel.com>
To:     Gregory CLEMENT <gregory.clement@bootlin.com>,
        Paul Burton <paulburton@kernel.org>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        linux-mips@vger.kernel.org, Jiaxun Yang <jiaxun.yang@flygoat.com>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Cc:     oe-kbuild-all@lists.linux.dev,
        Vladimir Kondratiev <vladimir.kondratiev@mobileye.com>,
        Tawfik Bayouk <tawfik.bayouk@mobileye.com>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        =?iso-8859-1?Q?Th=E9o?= Lebrun <theo.lebrun@bootlin.com>,
        Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
        Gregory CLEMENT <gregory.clement@bootlin.com>
Subject: Re: [PATCH v2 13/21] MIPS: traps: Give more explanations if ebase
 doesn't belong to KSEG0
Message-ID: <202311261838.wgZG2yvS-lkp@intel.com>
References: <20231123152639.561231-14-gregory.clement@bootlin.com>
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In-Reply-To: <20231123152639.561231-14-gregory.clement@bootlin.com>
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Hi Gregory,

kernel test robot noticed the following build warnings:

[auto build test WARNING on robh/for-next]
[also build test WARNING on lee-mfd/for-mfd-next linus/master v6.7-rc2 next-20231124]
[cannot apply to lee-mfd/for-mfd-fixes]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Gregory-CLEMENT/MIPS-Export-higher-highest-relocation-functions-in-uasm/20231124-002644
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link:    https://lore.kernel.org/r/20231123152639.561231-14-gregory.clement%40bootlin.com
patch subject: [PATCH v2 13/21] MIPS: traps: Give more explanations if ebase doesn't belong to KSEG0
config: mips-allyesconfig (https://download.01.org/0day-ci/archive/20231126/202311261838.wgZG2yvS-lkp@intel.com/config)
compiler: mips-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231126/202311261838.wgZG2yvS-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/202311261838.wgZG2yvS-lkp@intel.com/

All warnings (new ones prefixed by >>):

   arch/mips/kernel/traps.c:371:6: warning: no previous prototype for 'show_registers' [-Wmissing-prototypes]
     371 | void show_registers(struct pt_regs *regs)
         |      ^~~~~~~~~~~~~~
   arch/mips/kernel/traps.c:448:17: warning: no previous prototype for 'do_be' [-Wmissing-prototypes]
     448 | asmlinkage void do_be(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:753:17: warning: no previous prototype for 'do_ov' [-Wmissing-prototypes]
     753 | asmlinkage void do_ov(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:875:17: warning: no previous prototype for 'do_fpe' [-Wmissing-prototypes]
     875 | asmlinkage void do_fpe(struct pt_regs *regs, unsigned long fcr31)
         |                 ^~~~~~
   arch/mips/kernel/traps.c:1028:17: warning: no previous prototype for 'do_bp' [-Wmissing-prototypes]
    1028 | asmlinkage void do_bp(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:1115:17: warning: no previous prototype for 'do_tr' [-Wmissing-prototypes]
    1115 | asmlinkage void do_tr(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:1152:17: warning: no previous prototype for 'do_ri' [-Wmissing-prototypes]
    1152 | asmlinkage void do_ri(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:1403:17: warning: no previous prototype for 'do_cpu' [-Wmissing-prototypes]
    1403 | asmlinkage void do_cpu(struct pt_regs *regs)
         |                 ^~~~~~
   arch/mips/kernel/traps.c:1508:17: warning: no previous prototype for 'do_msa_fpe' [-Wmissing-prototypes]
    1508 | asmlinkage void do_msa_fpe(struct pt_regs *regs, unsigned int msacsr)
         |                 ^~~~~~~~~~
   arch/mips/kernel/traps.c:1528:17: warning: no previous prototype for 'do_msa' [-Wmissing-prototypes]
    1528 | asmlinkage void do_msa(struct pt_regs *regs)
         |                 ^~~~~~
   arch/mips/kernel/traps.c:1549:17: warning: no previous prototype for 'do_mdmx' [-Wmissing-prototypes]
    1549 | asmlinkage void do_mdmx(struct pt_regs *regs)
         |                 ^~~~~~~
   arch/mips/kernel/traps.c:1561:17: warning: no previous prototype for 'do_watch' [-Wmissing-prototypes]
    1561 | asmlinkage void do_watch(struct pt_regs *regs)
         |                 ^~~~~~~~
   arch/mips/kernel/traps.c:1588:17: warning: no previous prototype for 'do_mcheck' [-Wmissing-prototypes]
    1588 | asmlinkage void do_mcheck(struct pt_regs *regs)
         |                 ^~~~~~~~~
   arch/mips/kernel/traps.c: In function 'do_mcheck':
   arch/mips/kernel/traps.c:1591:24: warning: variable 'prev_state' set but not used [-Wunused-but-set-variable]
    1591 |         enum ctx_state prev_state;
         |                        ^~~~~~~~~~
   arch/mips/kernel/traps.c: At top level:
   arch/mips/kernel/traps.c:1613:17: warning: no previous prototype for 'do_mt' [-Wmissing-prototypes]
    1613 | asmlinkage void do_mt(struct pt_regs *regs)
         |                 ^~~~~
   arch/mips/kernel/traps.c:1649:17: warning: no previous prototype for 'do_dsp' [-Wmissing-prototypes]
    1649 | asmlinkage void do_dsp(struct pt_regs *regs)
         |                 ^~~~~~
   arch/mips/kernel/traps.c:1657:17: warning: no previous prototype for 'do_reserved' [-Wmissing-prototypes]
    1657 | asmlinkage void do_reserved(struct pt_regs *regs)
         |                 ^~~~~~~~~~~
   arch/mips/kernel/traps.c:1833:17: warning: no previous prototype for 'cache_parity_error' [-Wmissing-prototypes]
    1833 | asmlinkage void cache_parity_error(void)
         |                 ^~~~~~~~~~~~~~~~~~
   arch/mips/kernel/traps.c:1881:17: warning: no previous prototype for 'do_ftlb' [-Wmissing-prototypes]
    1881 | asmlinkage void do_ftlb(void)
         |                 ^~~~~~~
   arch/mips/kernel/traps.c:1910:17: warning: no previous prototype for 'do_gsexc' [-Wmissing-prototypes]
    1910 | asmlinkage void do_gsexc(struct pt_regs *regs, u32 diag1)
         |                 ^~~~~~~~
   arch/mips/kernel/traps.c:1945:6: warning: no previous prototype for 'ejtag_exception_handler' [-Wmissing-prototypes]
    1945 | void ejtag_exception_handler(struct pt_regs *regs)
         |      ^~~~~~~~~~~~~~~~~~~~~~~
   arch/mips/kernel/traps.c:1990:17: warning: no previous prototype for 'nmi_exception_handler' [-Wmissing-prototypes]
    1990 | void __noreturn nmi_exception_handler(struct pt_regs *regs)
         |                 ^~~~~~~~~~~~~~~~~~~~~
   In file included from include/asm-generic/bug.h:22,
                    from arch/mips/include/asm/bug.h:42,
                    from include/linux/bug.h:5,
                    from arch/mips/kernel/traps.c:16:
   arch/mips/kernel/traps.c: In function 'trap_init':
>> include/linux/kern_levels.h:5:25: warning: format '%llX' expects argument of type 'long long unsigned int', but argument 2 has type 'phys_addr_t' {aka 'unsigned int'} [-Wformat=]
       5 | #define KERN_SOH        "\001"          /* ASCII Start Of Header */
         |                         ^~~~~~
   include/linux/printk.h:427:25: note: in definition of macro 'printk_index_wrap'
     427 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
         |                         ^~~~
   include/linux/printk.h:508:9: note: in expansion of macro 'printk'
     508 |         printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
         |         ^~~~~~
   include/linux/kern_levels.h:12:25: note: in expansion of macro 'KERN_SOH'
      12 | #define KERN_WARNING    KERN_SOH "4"    /* warning conditions */
         |                         ^~~~~~~~
   include/linux/printk.h:508:16: note: in expansion of macro 'KERN_WARNING'
     508 |         printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
         |                ^~~~~~~~~~~~
   arch/mips/kernel/traps.c:2428:25: note: in expansion of macro 'pr_warn'
    2428 |                         pr_warn("ebase(0x%llX) should better be in KSeg0",
         |                         ^~~~~~~


vim +5 include/linux/kern_levels.h

314ba3520e513a Joe Perches 2012-07-30  4  
04d2c8c83d0e3a Joe Perches 2012-07-30 @5  #define KERN_SOH	"\001"		/* ASCII Start Of Header */
04d2c8c83d0e3a Joe Perches 2012-07-30  6  #define KERN_SOH_ASCII	'\001'
04d2c8c83d0e3a Joe Perches 2012-07-30  7  

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