Hi Steve, Thank you for the patch! Yet something to improve: [auto build test ERROR on arm64/for-next/core] [also build test ERROR on v4.19-rc8] [cannot apply to next-20181017] [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/Steve-Capper/52-bit-userspace-VAs/20181018-061652 base: https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-next/core config: arm64-defconfig (attached as .config) compiler: aarch64-linux-gnu-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 # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=arm64 All error/warnings (new ones prefixed by >>): In file included from include/linux/export.h:45:0, from include/linux/linkage.h:7, from include/linux/kernel.h:7, from arch/arm64/mm/init.c:20: arch/arm64/mm/init.c: In function 'mem_init': >> include/linux/compiler.h:358:38: error: call to '__compiletime_assert_613' declared with attribute error: BUILD_BUG_ON failed: TASK_SIZE_32 > TASK_SIZE_64 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^ include/linux/compiler.h:338:4: note: in definition of macro '__compiletime_assert' prefix ## suffix(); \ ^~~~~~ include/linux/compiler.h:358:2: note: in expansion of macro '_compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) ^~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:45:37: note: in expansion of macro 'compiletime_assert' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ^~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:69:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition) ^~~~~~~~~~~~~~~~ >> arch/arm64/mm/init.c:613:2: note: in expansion of macro 'BUILD_BUG_ON' BUILD_BUG_ON(TASK_SIZE_32 > TASK_SIZE_64); ^~~~~~~~~~~~ vim +/__compiletime_assert_613 +358 include/linux/compiler.h 9a8ab1c3 Daniel Santos 2013-02-21 344 9a8ab1c3 Daniel Santos 2013-02-21 345 #define _compiletime_assert(condition, msg, prefix, suffix) \ 9a8ab1c3 Daniel Santos 2013-02-21 346 __compiletime_assert(condition, msg, prefix, suffix) 9a8ab1c3 Daniel Santos 2013-02-21 347 9a8ab1c3 Daniel Santos 2013-02-21 348 /** 9a8ab1c3 Daniel Santos 2013-02-21 349 * compiletime_assert - break build and emit msg if condition is false 9a8ab1c3 Daniel Santos 2013-02-21 350 * @condition: a compile-time constant condition to check 9a8ab1c3 Daniel Santos 2013-02-21 351 * @msg: a message to emit if condition is false 9a8ab1c3 Daniel Santos 2013-02-21 352 * 9a8ab1c3 Daniel Santos 2013-02-21 353 * In tradition of POSIX assert, this macro will break the build if the 9a8ab1c3 Daniel Santos 2013-02-21 354 * supplied condition is *false*, emitting the supplied error message if the 9a8ab1c3 Daniel Santos 2013-02-21 355 * compiler has support to do so. 9a8ab1c3 Daniel Santos 2013-02-21 356 */ 9a8ab1c3 Daniel Santos 2013-02-21 357 #define compiletime_assert(condition, msg) \ 9a8ab1c3 Daniel Santos 2013-02-21 @358 _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) 9a8ab1c3 Daniel Santos 2013-02-21 359 :::::: The code at line 358 was first introduced by commit :::::: 9a8ab1c39970a4938a72d94e6fd13be88a797590 bug.h, compiler.h: introduce compiletime_assert & BUILD_BUG_ON_MSG :::::: TO: Daniel Santos <daniel.santos@xxxxxxxxx> :::::: 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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