linux-kernel - Re: [PATCH v4 27/28] objtool: Improve the disassembly of the pv

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Message-ID: <1b3ddd16-51b8-4b59-84ec-4740c50f3533@oracle.com>
Date: Mon, 17 Nov 2025 08:37:12 +0100
From: Alexandre Chartre <alexandre.chartre@...cle.com>
To: kernel test robot <lkp@...el.com>, linux-kernel@...r.kernel.org,
        mingo@...nel.org, jpoimboe@...nel.org, peterz@...radead.org
Cc: alexandre.chartre@...cle.com, llvm@...ts.linux.dev,
        oe-kbuild-all@...ts.linux.dev
Subject: Re: [PATCH v4 27/28] objtool: Improve the disassembly of the pv_ops
 call


On 11/15/25 02:34, kernel test robot wrote:
> Hi Alexandre,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on linus/master]
> [also build test ERROR on v6.18-rc5]
> [cannot apply to next-20251114]
> [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/Alexandre-Chartre/objtool-Move-disassembly-functions-to-a-separated-file/20251114-020940
> base:   linus/master
> patch link:    https://lore.kernel.org/r/20251113164917.2563486-28-alexandre.chartre%40oracle.com
> patch subject: [PATCH v4 27/28] objtool: Improve the disassembly of the pv_ops call
> :::::: branch date: 30 hours ago
> :::::: commit date: 30 hours ago
> config: loongarch-randconfig-001-20251115 (https://download.01.org/0day-ci/archive/20251115/202511150854.iDlHBWI5-lkp@intel.com/config)
> compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251115/202511150854.iDlHBWI5-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@...el.com>
> | Closes: https://lore.kernel.org/r/202511150854.iDlHBWI5-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>>> disas.c:15:10: fatal error: 'asm/cpufeatures.h' file not found
>        15 | #include <asm/cpufeatures.h>
>           |          ^~~~~~~~~~~~~~~~~~~
>     1 error generated.
>     make[5]: *** [tools/build/Makefile.build:85: tools/objtool/disas.o] Error 1 shuffle=3303159566
>     make[5]: Target '__build' not remade because of errors.
>     make[4]: *** [Makefile:87: tools/objtool/objtool-in.o] Error 2 shuffle=3303159566
>     make[4]: Target 'all' not remade because of errors.
>     make[3]: *** [Makefile:73: objtool] Error 2 shuffle=3303159566
>     make[2]: *** [Makefile:1449: tools/objtool] Error 2 shuffle=3303159566
>     make[2]: Target 'prepare' not remade because of errors.
>     make[1]: *** [Makefile:248: __sub-make] Error 2 shuffle=3303159566
>     make[1]: Target 'prepare' not remade because of errors.
>     make: *** [Makefile:248: __sub-make] Error 2 shuffle=3303159566
>     make: Target 'prepare' not remade because of errors.
> 

The problem is that I am referring to some cpu features (i.e. X86_FEATURE_XENPV)
to identify pv_ops. I need to abstract this per architecture. Will fix it.

alex.