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Date:   Mon, 25 May 2020 09:24:36 +0800
From:   kbuild test robot <>
To:     Michal Simek <>
        Christoph Hellwig <>
Subject: undefined reference to `start_isolate_page_range'

Hi Michal,

FYI, the error/warning still remains.

tree: master
head:   9cb1fd0efd195590b828b9b865421ad345a4a145
commit: 2602276d3d3811b1a48c48113042cd75fcbfc27d microblaze: Wire CMA allocator
date:   4 months ago
config: microblaze-randconfig-r026-20200524 (attached as .config)
compiler: microblaze-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 2602276d3d3811b1a48c48113042cd75fcbfc27d
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=microblaze 

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

All errors (new ones prefixed by >>, old ones prefixed by <<):

microblaze-linux-ld: mm/page_alloc.o: in function `alloc_contig_range':
>> (.text+0xd6d0): undefined reference to `start_isolate_page_range'
microblaze-linux-ld: (.text+0xd944): undefined reference to `test_pages_isolated'
microblaze-linux-ld: (.text+0xd9fc): undefined reference to `undo_isolate_page_range'

0-DAY CI Kernel Test Service, Intel Corporation

Download attachment ".config.gz" of type "application/gzip" (34433 bytes)

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