linux-kernel - Re: [PATCH 2/4] x86/mtrr: Introduce MTRR work state structure

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Message-ID: <63e7d23f-8c28-40cb-9fb5-18ee392002fd@suse.com>
Date: Thu, 22 Jan 2026 14:48:26 +0100
From: Jürgen Groß <jgross@...e.com>
To: kernel test robot <lkp@...el.com>, linux-kernel@...r.kernel.org,
 x86@...nel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
 Thomas Gleixner <tglx@...nel.org>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH 2/4] x86/mtrr: Introduce MTRR work state structure

On 21.01.26 20:58, kernel test robot wrote:
> Hi Juergen,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on tip/x86/core]
> [also build test WARNING on tip/master linus/master v6.19-rc6 next-20260121]
> [cannot apply to tip/auto-latest]
> [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/Juergen-Gross/x86-mtrr-Move-cache_enable-and-cache_disable-to-mtrr-generic-c/20260121-230320
> base:   tip/x86/core
> patch link:    https://lore.kernel.org/r/20260121141106.755458-3-jgross%40suse.com
> patch subject: [PATCH 2/4] x86/mtrr: Introduce MTRR work state structure
> config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20260122/202601220306.FavyG0wD-lkp@intel.com/config)
> compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260122/202601220306.FavyG0wD-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/oe-kbuild-all/202601220306.FavyG0wD-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
>>> Warning: arch/x86/kernel/cpu/mtrr/generic.c:920 function parameter 'state' not described in 'set_mtrr_state'
>>> Warning: arch/x86/kernel/cpu/mtrr/generic.c:920 function parameter 'state' not described in 'set_mtrr_state'
> 

Just a note: I have a local fix for that, but will send V2 only after some
more feedback.


Juergen

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