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    SubjectRe: [v4 2/3] mm: Defer TLB flush by keeping both src and dst folios at migration
    Hi Byungchul,

    kernel test robot noticed the following build errors:

    [auto build test ERROR on tip/sched/core]
    [also build test ERROR on tip/x86/core tip/x86/mm v6.6]
    [cannot apply to akpm-mm/mm-everything linus/master next-20231109]
    [If your patch is applied to the wrong git tree, kindly drop us a note.
    And when submitting patch, we suggest to use '--base' as documented in
    https://git-scm.com/docs/git-format-patch#_base_tree_information]

    url: https://github.com/intel-lab-lkp/linux/commits/Byungchul-Park/mm-rmap-Recognize-read-only-TLB-entries-during-batched-TLB-flush/20231109-163706
    base: tip/sched/core
    patch link: https://lore.kernel.org/r/20231109045908.54996-3-byungchul%40sk.com
    patch subject: [v4 2/3] mm: Defer TLB flush by keeping both src and dst folios at migration
    config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20231109/202311092356.XzY1aBHX-lkp@intel.com/config)
    compiler: m68k-linux-gcc (GCC) 13.2.0
    reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231109/202311092356.XzY1aBHX-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@intel.com>
    | Closes: https://lore.kernel.org/oe-kbuild-all/202311092356.XzY1aBHX-lkp@intel.com/

    All errors (new ones prefixed by >>):

    In file included from include/linux/mmzone.h:22,
    from include/linux/topology.h:33,
    from include/linux/irq.h:19,
    from include/asm-generic/hardirq.h:17,
    from ./arch/m68k/include/generated/asm/hardirq.h:1,
    from include/linux/hardirq.h:11,
    from include/linux/interrupt.h:11,
    from include/linux/kernel_stat.h:9,
    from arch/m68k/kernel/asm-offsets.c:16:
    >> include/linux/mm_types.h:1416:42: error: field 'arch' has incomplete type
    1416 | struct arch_tlbflush_unmap_batch arch;
    | ^~~~
    make[3]: *** [scripts/Makefile.build:116: arch/m68k/kernel/asm-offsets.s] Error 1
    make[3]: Target 'prepare' not remade because of errors.
    make[2]: *** [Makefile:1202: prepare0] Error 2
    make[2]: Target 'prepare' not remade because of errors.
    make[1]: *** [Makefile:234: __sub-make] Error 2
    make[1]: Target 'prepare' not remade because of errors.
    make: *** [Makefile:234: __sub-make] Error 2
    make: Target 'prepare' not remade because of errors.


    vim +/arch +1416 include/linux/mm_types.h

    1401
    1402 struct migrc_req {
    1403 /*
    1404 * folios pending for TLB flush
    1405 */
    1406 struct list_head folios;
    1407
    1408 /*
    1409 * for hanging to the associated numa node
    1410 */
    1411 struct llist_node llnode;
    1412
    1413 /*
    1414 * architecture specific data for batched TLB flush
    1415 */
    > 1416 struct arch_tlbflush_unmap_batch arch;

    --
    0-DAY CI Kernel Test Service
    https://github.com/intel/lkp-tests/wiki

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