Hi Chao, Thank you for the patch! Yet something to improve:
[auto build test ERROR on linus/master] [also build test ERROR on v4.20-rc6 next-20181214] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Chao-Fan/x86-boot-KASLR-Parse-ACPI-table-and-limit-KASLR-to-choosing-immovable-memory/20181214-082218 config: i386-allmodconfig (attached as .config) compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=i386 All error/warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:207:0, from arch/x86/boot/string.c:17: >> arch/x86/include/asm/div64.h:61:21: error: redefinition of 'div_u64_rem' #define div_u64_rem div_u64_rem ^ >> arch/x86/boot/string.c:194:19: note: in expansion of macro 'div_u64_rem' static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) ^~~~~~~~~~~ arch/x86/include/asm/div64.h:43:19: note: previous definition of 'div_u64_rem' was here static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) ^~~~~~~~~~~ -- In file included from include/linux/kernel.h:207:0, from arch/x86/boot/compressed/../string.c:17, from arch/x86/boot/compressed/string.c:11: >> arch/x86/include/asm/div64.h:61:21: error: redefinition of 'div_u64_rem' #define div_u64_rem div_u64_rem ^ >> arch/x86/boot/compressed/../string.c:194:19: note: in expansion of macro >> 'div_u64_rem' static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) ^~~~~~~~~~~ arch/x86/include/asm/div64.h:43:19: note: previous definition of 'div_u64_rem' was here static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) ^~~~~~~~~~~ vim +/div_u64_rem +61 arch/x86/include/asm/div64.h 428c5a23 include/asm-x86/div64.h Chris Snook 2007-10-20 42 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 43 static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder) 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 44 { 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 45 union { 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 46 u64 v64; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 47 u32 v32[2]; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 48 } d = { dividend }; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 49 u32 upper; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 50 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 51 upper = d.v32[1]; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 52 d.v32[1] = 0; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 53 if (upper >= divisor) { 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 54 d.v32[1] = upper / divisor; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 55 upper %= divisor; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 56 } 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 57 asm ("divl %2" : "=a" (d.v32[0]), "=d" (*remainder) : 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 58 "rm" (divisor), "0" (d.v32[0]), "1" (upper)); 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 59 return d.v64; 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 60 } 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 @61 #define div_u64_rem div_u64_rem 2418f4f2 include/asm-x86/div64.h Roman Zippel 2008-05-01 62 :::::: The code at line 61 was first introduced by commit :::::: 2418f4f28f8467b92a6177af32d05737ebf6206c introduce explicit signed/unsigned 64bit divide :::::: TO: Roman Zippel <zip...@linux-m68k.org> :::::: CC: Linus Torvalds <torva...@linux-foundation.org> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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