linux-kernel - Re: [PATCH hyperv-next v6 05/17] arch/x86: mshyperv: Trap on access for some synthetic MSRs

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Message-ID: <202510041544.zPic8ogA-lkp@intel.com>
Date: Sat, 4 Oct 2025 16:09:31 +0800
From: kernel test robot <lkp@...el.com>
To: Roman Kisel <romank@...ux.microsoft.com>, arnd@...db.de, bp@...en8.de,
	corbet@....net, dave.hansen@...ux.intel.com, decui@...rosoft.com,
	haiyangz@...rosoft.com, hpa@...or.com, kys@...rosoft.com,
	mikelley@...rosoft.com, mingo@...hat.com, tglx@...utronix.de,
	Tianyu.Lan@...rosoft.com, wei.liu@...nel.org, x86@...nel.org,
	linux-hyperv@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	benhill@...rosoft.com, bperkins@...rosoft.com,
	sunilmut@...rosoft.com, romank@...ux.microsoft.com
Subject: Re: [PATCH hyperv-next v6 05/17] arch/x86: mshyperv: Trap on access
 for some synthetic MSRs

Hi Roman,

kernel test robot noticed the following build warnings:

[auto build test WARNING on b595edcb24727e7f93e7962c3f6f971cc16dd29e]

url:    https://github.com/intel-lab-lkp/linux/commits/Roman-Kisel/Documentation-hyperv-Confidential-VMBus/20251004-063158
base:   b595edcb24727e7f93e7962c3f6f971cc16dd29e
patch link:    https://lore.kernel.org/r/20251003222710.6257-6-romank%40linux.microsoft.com
patch subject: [PATCH hyperv-next v6 05/17] arch/x86: mshyperv: Trap on access for some synthetic MSRs
config: i386-buildonly-randconfig-003-20251004 (https://download.01.org/0day-ci/archive/20251004/202510041544.zPic8ogA-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/20251004/202510041544.zPic8ogA-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/202510041544.zPic8ogA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> arch/x86/kernel/cpu/mshyperv.c:46:13: warning: unused variable 'hv_para_sint_proxy' [-Wunused-variable]
      46 | static bool hv_para_sint_proxy;
         |             ^~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +/hv_para_sint_proxy +46 arch/x86/kernel/cpu/mshyperv.c

    41	
    42	/*
    43	 * When running with the paravisor, controls proxying the synthetic interrupts
    44	 * from the host
    45	 */
  > 46	static bool hv_para_sint_proxy;
    47	

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