tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.8.y head: 402b64acb7a69a2c68ca579eef09eb0a82e4a267 commit: c6e27246850996584c694502958a3cf105df9256 [332/333] mm/hugetlb: check for reserved hugepages during memory offline config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705 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 git checkout c6e27246850996584c694502958a3cf105df9256 # save the attached .config to linux build tree make.cross ARCH=arm64 All warnings (new ones prefixed by >>): In file included from include/linux/mm.h:68:0, from mm/hugetlb.c:7: mm/hugetlb.c: In function 'dissolve_free_huge_pages': >> arch/arm64/include/asm/pgtable.h:36:28: warning: suggest parentheses around assignment used as truth value [-Wparentheses] #define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT)) ^ include/asm-generic/memory_model.h:53:29: note: in expansion of macro 'vmemmap' #define __pfn_to_page(pfn) (vmemmap + (pfn)) ^~~~~~~ include/asm-generic/memory_model.h:81:21: note: in expansion of macro '__pfn_to_page' #define pfn_to_page __pfn_to_page ^~~~~~~~~~~~~ mm/hugetlb.c:1485:36: note: in expansion of macro 'pfn_to_page' if (rc = dissolve_free_huge_page(pfn_to_page(pfn))) ^~~~~~~~~~~ vim +36 arch/arm64/include/asm/pgtable.h 4f04d8f0 Catalin Marinas 2012-03-05 20 #include <asm/proc-fns.h> 4f04d8f0 Catalin Marinas 2012-03-05 21 4f04d8f0 Catalin Marinas 2012-03-05 22 #include <asm/memory.h> 4f04d8f0 Catalin Marinas 2012-03-05 23 #include <asm/pgtable-hwdef.h> 3eca86e7 Mark Rutland 2016-02-26 24 #include <asm/pgtable-prot.h> 4f04d8f0 Catalin Marinas 2012-03-05 25 4f04d8f0 Catalin Marinas 2012-03-05 26 /* 3e1907d5 Ard Biesheuvel 2016-03-30 27 * VMALLOC range. 08375198 Catalin Marinas 2014-07-16 28 * f9040773 Ard Biesheuvel 2016-02-16 29 * VMALLOC_START: beginning of the kernel vmalloc space 3e1907d5 Ard Biesheuvel 2016-03-30 30 * VMALLOC_END: extends to the available space below vmmemmap, PCI I/O space 3e1907d5 Ard Biesheuvel 2016-03-30 31 * and fixed mappings 4f04d8f0 Catalin Marinas 2012-03-05 32 */ f9040773 Ard Biesheuvel 2016-02-16 33 #define VMALLOC_START (MODULES_END) 08375198 Catalin Marinas 2014-07-16 34 #define VMALLOC_END (PAGE_OFFSET - PUD_SIZE - VMEMMAP_SIZE - SZ_64K) 4f04d8f0 Catalin Marinas 2012-03-05 35 3bab79ed Ard Biesheuvel 2016-03-30 @36 #define vmemmap ((struct page *)VMEMMAP_START - (memstart_addr >> PAGE_SHIFT)) 4f04d8f0 Catalin Marinas 2012-03-05 37 d016bf7e Kirill A. Shutemov 2015-02-11 38 #define FIRST_USER_ADDRESS 0UL 4f04d8f0 Catalin Marinas 2012-03-05 39 4f04d8f0 Catalin Marinas 2012-03-05 40 #ifndef __ASSEMBLY__ 2f4b829c Catalin Marinas 2015-07-10 41 961faac1 Mark Rutland 2016-01-25 42 #include <asm/fixmap.h> 2f4b829c Catalin Marinas 2015-07-10 43 #include <linux/mmdebug.h> 2f4b829c Catalin Marinas 2015-07-10 44 :::::: The code at line 36 was first introduced by commit :::::: 3bab79edc67152cb6cadb12773b7c7d05228eb77 Revert "arm64: account for sparsemem section alignment when choosing vmemmap offset" :::::: TO: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> :::::: CC: Will Deacon <will.deacon@xxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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