linux-kernel - Re: arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'low' not described in 'sgx_calc_section

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Message-Id: <CUZ057BXGCE1.2E8MOHQ8NVINE@suppilovahvero>
Date:   Tue, 22 Aug 2023 13:30:05 +0300
From:   "Jarkko Sakkinen" <jarkko@...nel.org>
To:     "kernel test robot" <lkp@...el.com>,
        "Sean Christopherson" <sean.j.christopherson@...el.com>
Cc:     <oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>,
        "Borislav Petkov" <bp@...e.de>,
        "Serge Ayoun" <serge.ayoun@...el.com>
Subject: Re: arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter
 or member 'low' not described in 'sgx_calc_section_metric'

On Tue Aug 22, 2023 at 10:27 AM EEST, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   f7757129e3dea336c407551c98f50057c22bb266
> commit: e7e0545299d8cb0fd6fe3ba50401b7f5c3937362 x86/sgx: Initialize metadata for Enclave Page Cache (EPC) sections
> date:   2 years, 9 months ago
> config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20230822/202308221542.11UpkVfp-lkp@intel.com/config)
> compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
> reproduce: (https://download.01.org/0day-ci/archive/20230822/202308221542.11UpkVfp-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/202308221542.11UpkVfp-lkp@intel.com/
>
> All warnings (new ones prefixed by >>):
>
> >> arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'low' not described in 'sgx_calc_section_metric'
> >> arch/x86/kernel/cpu/sgx/main.c:124: warning: Function parameter or member 'high' not described in 'sgx_calc_section_metric'
>
>
> vim +124 arch/x86/kernel/cpu/sgx/main.c
>
>    117	
>    118	/**
>    119	 * A section metric is concatenated in a way that @low bits 12-31 define the
>    120	 * bits 12-31 of the metric and @high bits 0-19 define the bits 32-51 of the
>    121	 * metric.
>    122	 */
>    123	static inline u64 __init sgx_calc_section_metric(u64 low, u64 high)
>  > 124	{
>    125		return (low & GENMASK_ULL(31, 12)) +
>    126		       ((high & GENMASK_ULL(19, 0)) << 32);
>    127	}
>    128	
>
> -- 
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki

https://lkml.org/lkml/2023/8/22/379

BR, Jarkko