linux-kernel - Re: [PATCHv2 2/3] mm: Do not loose dirty and access bits in pmdp

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Message-ID: <201706160612.nrNQz7ha%fengguang.wu@intel.com>
Date:   Fri, 16 Jun 2017 06:44:56 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Vineet Gupta <vgupta@...opsys.com>,
        Russell King <linux@...linux.org.uk>,
        Will Deacon <will.deacon@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        "David S. Miller" <davem@...emloft.net>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        Heiko Carstens <heiko.carstens@...ibm.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        linux-arch@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Subject: Re: [PATCHv2 2/3] mm: Do not loose dirty and access bits in
 pmdp_invalidate()

Hi Kirill,

[auto build test ERROR on mmotm/master]
[also build test ERROR on v4.12-rc5 next-20170615]
[cannot apply to tip/x86/core]
[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/Kirill-A-Shutemov/Do-not-loose-dirty-bit-on-THP-pages/20170616-030455
base:   git://git.cmpxchg.org/linux-mmotm.git master
config: arm64-defconfig (attached as .config)
compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm64 

All errors (new ones prefixed by >>):

   mm/pgtable-generic.c: In function 'pmdp_invalidate':
>> mm/pgtable-generic.c:185:14: error: implicit declaration of function 'pmdp_establish' [-Werror=implicit-function-declaration]
     pmd_t old = pmdp_establish(pmdp, pmd_mknotpresent(*pmdp));
                 ^~~~~~~~~~~~~~
>> mm/pgtable-generic.c:185:14: error: invalid initializer
   cc1: some warnings being treated as errors

vim +/pmdp_establish +185 mm/pgtable-generic.c

   179	#endif
   180	
   181	#ifndef __HAVE_ARCH_PMDP_INVALIDATE
   182	pmd_t pmdp_invalidate(struct vm_area_struct *vma, unsigned long address,
   183			     pmd_t *pmdp)
   184	{
 > 185		pmd_t old = pmdp_establish(pmdp, pmd_mknotpresent(*pmdp));
   186		if (pmd_present(old))
   187			flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
   188		return old;

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