tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: aa1fbe633d3034f9f838ff13387af04771e68e31 commit: 5292abe86ee6b74a475d33d38bf5a266dacece0b [13808/14071] mm: fix device-dax pud write-faults triggered by get_user_pages() config: arm-axm55xx_defconfig (attached as .config) compiler: arm-linux-gnueabi-gcc (Debian 7.2.0-11) 7.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 5292abe86ee6b74a475d33d38bf5a266dacece0b # save the attached .config to linux build tree make.cross ARCH=arm All error/warnings (new ones prefixed by >>): In file included from arch/arm/include/asm/pgtable.h:32:0, from include/linux/memremap.h:8, from include/linux/mm.h:27, from arch/arm/kernel/asm-offsets.c:15: >> arch/arm/include/asm/pgtable-3level.h:212:32: error: expected identifier or '(' before '!' token #define pmd_isclear(pmd, val) (!(pmd_val(pmd) & (val))) ^ >> arch/arm/include/asm/pgtable-3level.h:225:26: note: in expansion of macro 'pmd_isclear' #define pmd_write(pmd) (pmd_isclear((pmd), L_PMD_SECT_RDONLY)) ^~~~~~~~~~~ >> arch/arm/include/asm/pgtable-3level.h:228:25: note: in expansion of macro 'pmd_write' #define pud_write(pud) pmd_write(__pmd(pud_val(pud))) ^~~~~~~~~ include/asm-generic/pgtable.h:817:19: note: in expansion of macro 'pud_write' static inline int pud_write(pud_t pud) ^~~~~~~~~ make[2]: *** [arch/arm/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [sub-make] Error 2 vim +/pmd_write +228 arch/arm/include/asm/pgtable-3level.h 1355e2a6 Catalin Marinas 2012-07-25 209 f2950706 Steven Capper 2014-07-18 210 #define pmd_isset(pmd, val) ((u32)(val) == (val) ? pmd_val(pmd) & (val) \ f2950706 Steven Capper 2014-07-18 211 : !!(pmd_val(pmd) & (val))) f2950706 Steven Capper 2014-07-18 @212 #define pmd_isclear(pmd, val) (!(pmd_val(pmd) & (val))) f2950706 Steven Capper 2014-07-18 213 62453188 Will Deacon 2016-06-07 214 #define pmd_present(pmd) (pmd_isset((pmd), L_PMD_SECT_VALID)) f2950706 Steven Capper 2014-07-18 215 #define pmd_young(pmd) (pmd_isset((pmd), PMD_SECT_AF)) bd951303 Steve Capper 2014-10-09 216 #define pte_special(pte) (pte_isset((pte), L_PTE_SPECIAL)) bd951303 Steve Capper 2014-10-09 217 static inline pte_t pte_mkspecial(pte_t pte) bd951303 Steve Capper 2014-10-09 218 { bd951303 Steve Capper 2014-10-09 219 pte_val(pte) |= L_PTE_SPECIAL; bd951303 Steve Capper 2014-10-09 220 return pte; bd951303 Steve Capper 2014-10-09 221 } bd951303 Steve Capper 2014-10-09 222 #define __HAVE_ARCH_PTE_SPECIAL 8d962507 Catalin Marinas 2012-07-25 223 8d962507 Catalin Marinas 2012-07-25 224 #define __HAVE_ARCH_PMD_WRITE ded94779 Steven Capper 2014-07-18 @225 #define pmd_write(pmd) (pmd_isclear((pmd), L_PMD_SECT_RDONLY)) ded94779 Steven Capper 2014-07-18 226 #define pmd_dirty(pmd) (pmd_isset((pmd), L_PMD_SECT_DIRTY)) b8cd51af Steve Capper 2014-10-09 227 #define pud_page(pud) pmd_page(__pmd(pud_val(pud))) b8cd51af Steve Capper 2014-10-09 @228 #define pud_write(pud) pmd_write(__pmd(pud_val(pud))) 8d962507 Catalin Marinas 2012-07-25 229 :::::: The code at line 228 was first introduced by commit :::::: b8cd51afe05a98ef907e61c603d5c5b7ad6242d8 arm: mm: enable RCU fast_gup :::::: TO: Steve Capper <steve.capper@xxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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