linux-kernel - Re: [PATCH 1/1] x86/gart/kcore: Exclude GART aperture from kcore

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Message-ID: <201812300344.89taUcqA%fengguang.wu@intel.com>
Date:   Sun, 30 Dec 2018 03:43:57 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Kairui Song <kasong@...hat.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, bp@...en8.de, mingo@...hat.com, hpa@...or.com,
        jbohac@...e.cz, adobriyan@...il.com, akpm@...ux-foundation.org,
        osandov@...com, bhsharma@...hat.com, kasong@...hat.com,
        bhe@...hat.com, dyoung@...hat.com
Subject: Re: [PATCH 1/1] x86/gart/kcore: Exclude GART aperture from kcore

Hi Kairui,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.20 next-20181224]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Kairui-Song/x86-gart-kcore-Exclude-GART-aperture-from-kcore/20181221-132322
config: x86_64-randconfig-k2-12281339 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   arch/x86/kernel/aperture_64.o: In function `exclude_from_vmcore':
>> arch/x86/kernel/aperture_64.c:81: undefined reference to `register_mem_pfn_is_ram'

vim +81 arch/x86/kernel/aperture_64.c

    75	
    76	static void exclude_from_vmcore(u64 aper_base, u32 aper_order)
    77	{
    78		aperture_pfn_start = aper_base >> PAGE_SHIFT;
    79		aperture_page_count = (32 * 1024 * 1024) << aper_order >> PAGE_SHIFT;
    80		WARN_ON(register_oldmem_pfn_is_ram(&gart_mem_pfn_is_ram));
  > 81		WARN_ON(register_mem_pfn_is_ram(&gart_mem_pfn_is_ram));
    82	}
    83	#else
    84	static void exclude_from_vmcore(u64 aper_base, u32 aper_order)
    85	{
    86	}
    87	#endif
    88	

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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