Hi Jay, Thank you for the patch! Yet something to improve: [auto build test ERROR on vfio/next] [also build test ERROR on linux/master linus/master v5.8-rc6 next-20200720] [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] url: https://github.com/0day-ci/linux/commits/Jay-Zhou/vfio-dma_map-unmap-optimized-for-hugetlbfs-pages/20200720-163157 base: https://github.com/awilliam/linux-vfio.git next config: i386-randconfig-m021-20200720 (attached as .config) compiler: gcc-9 (Debian 9.3.0-14) 9.3.0 reproduce (this is a W=1 build): # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from include/linux/mm.h:679, from include/linux/scatterlist.h:8, from include/linux/iommu.h:10, from drivers/vfio/vfio_iommu_type1.c:27: >> include/linux/huge_mm.h:319:25: error: braced-group within expression allowed only inside a function 319 | #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) | ^ drivers/vfio/vfio_iommu_type1.c:523:45: note: in expansion of macro 'HPAGE_PMD_SHIFT' 523 | {vfio_hugetlbpage_2M, PMD_SIZE, ~((1ULL << HPAGE_PMD_SHIFT) - 1)}, | ^~~~~~~~~~~~~~~ include/linux/huge_mm.h:323:25: error: braced-group within expression allowed only inside a function 323 | #define HPAGE_PUD_SHIFT ({ BUILD_BUG(); 0; }) | ^ drivers/vfio/vfio_iommu_type1.c:524:45: note: in expansion of macro 'HPAGE_PUD_SHIFT' 524 | {vfio_hugetlbpage_1G, PUD_SIZE, ~((1ULL << HPAGE_PUD_SHIFT) - 1)}, | ^~~~~~~~~~~~~~~ vim +319 include/linux/huge_mm.h 87eaceb3faa59b Yang Shi 2019-09-23 317 71e3aac0724ffe Andrea Arcangeli 2011-01-13 318 #else /* CONFIG_TRANSPARENT_HUGEPAGE */ d8c37c480678eb Naoya Horiguchi 2012-03-21 @319 #define HPAGE_PMD_SHIFT ({ BUILD_BUG(); 0; }) d8c37c480678eb Naoya Horiguchi 2012-03-21 320 #define HPAGE_PMD_MASK ({ BUILD_BUG(); 0; }) d8c37c480678eb Naoya Horiguchi 2012-03-21 321 #define HPAGE_PMD_SIZE ({ BUILD_BUG(); 0; }) 71e3aac0724ffe Andrea Arcangeli 2011-01-13 322 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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