-----Original Message-----
From: kbuild test robot <redacted>
Sent: 2019年9月19日 3:36
To: Justin He (Arm Technology China) <redacted>
Cc: kbuild-all@01.org; Catalin Marinas <Catalin.Marinas@arm.com>; Will
Deacon [off-list ref]; Mark Rutland [off-list ref];
James Morse [off-list ref]; Marc Zyngier [off-list ref];
Matthew Wilcox [off-list ref]; Kirill A. Shutemov
[off-list ref]; linux-arm-kernel@lists.infradead.org;
linux-kernel@vger.kernel.org; linux-mm@kvack.org; Suzuki Poulose
[off-list ref]; Punit Agrawal [off-list ref];
Anshuman Khandual [off-list ref]; Jun Yao
[off-list ref]; Alex Van Brunt [off-list ref];
Robin Murphy [off-list ref]; Thomas Gleixner
[off-list ref]; Andrew Morton [off-list ref];
jglisse@redhat.com; Ralph Campbell [off-list ref];
hejianet@gmail.com; Kaly Xin (Arm Technology China)
[off-list ref]; Justin He (Arm Technology China)
[off-list ref]
Subject: Re: [PATCH v4 3/3] mm: fix double page fault on arm64 if PTE_AF
is cleared

Hi Jia,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3 next-20190917]
[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/Jia-He/fix-double-page-
fault-on-arm64/20190918-220036
config: arm64-allnoconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-
tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=arm64

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <redacted>

All errors (new ones prefixed by >>):

   mm/memory.o: In function `wp_page_copy':

quoted

quoted

memory.c:(.text+0x8fc): undefined reference to `cpu_has_hw_af'

   memory.c:(.text+0x8fc): relocation truncated to fit: R_AARCH64_CALL26
against undefined symbol `cpu_has_hw_af'

Ah, I should add a stub for CONFIG_ARM64_HW_AFDBM is 'N' on arm64 arch
Will fix it asap

--
Cheers,
Justin (Jia He)

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

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