On 04/07/2016 02:46 PM, kbuild test robot wrote: > Hi Anshuman, > > [auto build test ERROR on powerpc/next] > [also build test ERROR on v4.6-rc2 next-20160407] > [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] > > url: https://github.com/0day-ci/linux/commits/Anshuman-Khandual/Enable-HugeTLB-page-migration-on-POWER/20160407-165841 > base: https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next > config: sparc64-allyesconfig (attached as .config) > reproduce: > wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross > chmod +x ~/bin/make.cross > # save the attached .config to linux build tree > make.cross ARCH=sparc64 > > All error/warnings (new ones prefixed by >>): > > mm/hugetlb.c: In function 'follow_huge_pgd': >>> >> mm/hugetlb.c:4395:3: error: implicit declaration of function 'pgd_page' [-Werror=implicit-function-declaration] > page = pgd_page(*pgd) + ((address & ~PGDIR_MASK) >> PAGE_SHIFT); > ^ The following change seems to fix the build problem on SPARC but will require some inputs from SPARC maintainers regarding the functional correctness of the patch. diff --git a/arch/sparc/include/asm/pgtable_64.h b/arch/sparc/include/asm/pgtable_64.h index f089cfa..7b7e6a0 100644 --- a/arch/sparc/include/asm/pgtable_64.h +++ b/arch/sparc/include/asm/pgtable_64.h @@ -804,6 +804,7 @@ static inline unsigned long __pmd_page(pmd_t pmd) #define pmd_clear(pmdp) (pmd_val(*(pmdp)) = 0UL) #define pud_present(pud) (pud_val(pud) != 0U) #define pud_clear(pudp) (pud_val(*(pudp)) = 0UL) +#define pgd_page(pgd) (pgd_val(pgd)) #define pgd_page_vaddr(pgd) \ ((unsigned long) __va(pgd_val(pgd))) #define pgd_present(pgd) (pgd_val(pgd) != 0U) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>