__uint128_t could work with gcc 8.1. If compile the patch we need some small patch for binutils to support several vector instructions, 0-day gcc need be updated in future. On Sun, Jan 5, 2020 at 8:33 PM kbuild test robot <lkp@xxxxxxxxx> wrote: > > Hi, > > I love your patch! Yet something to improve: > > [auto build test ERROR on linus/master] > [also build test ERROR on v5.5-rc4 next-20191220] > [if your patch is applied to the wrong git tree, please drop us a note to help > improve the system. BTW, we also suggest to use '--base' option to specify the > base tree in git format-patch, please see https://stackoverflow.com/a/37406982] > > url: https://github.com/0day-ci/linux/commits/guoren-kernel-org/riscv-Fixup-obvious-bug-for-fp-regs-reset/20200105-105609 > base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git c420ddda506b80ec2686e405698d37fafeea3b7a > config: riscv-rv32_defconfig (attached as .config) > compiler: riscv32-linux-gcc (GCC) 7.5.0 > 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=7.5.0 make.cross ARCH=riscv > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > In file included from arch/riscv/include/asm/ptrace.h:9:0, > from arch/riscv/include/asm/processor.h:11, > from arch/riscv/include/asm/irqflags.h:10, > from include/linux/irqflags.h:16, > from arch/riscv/include/asm/bitops.h:14, > from include/linux/bitops.h:26, > from include/linux/kernel.h:12, > from include/asm-generic/bug.h:19, > from arch/riscv/include/asm/bug.h:75, > from include/linux/bug.h:5, > from include/linux/page-flags.h:10, > from kernel/bounds.c:10: > >> arch/riscv/include/uapi/asm/ptrace.h:75:2: error: unknown type name '__uint128_t' > __uint128_t v[32]; > ^~~~~~~~~~~ > make[2]: *** [kernel/bounds.s] Error 1 > make[2]: Target '__build' not remade because of errors. > make[1]: *** [prepare0] Error 2 > make[1]: Target 'prepare' not remade because of errors. > make: *** [sub-make] Error 2 > 507 real 2 user 5 sys 1.58% cpu make prepare > > vim +/__uint128_t +75 arch/riscv/include/uapi/asm/ptrace.h > > 73 > 74 struct __riscv_v_state { > > 75 __uint128_t v[32]; > 76 unsigned long vstart; > 77 unsigned long vxsat; > 78 unsigned long vxrm; > 79 unsigned long vl; > 80 unsigned long vtype; > 81 }; > 82 > > --- > 0-DAY kernel test infrastructure Open Source Technology Center > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx Intel Corporation -- Best Regards Guo Ren ML: https://lore.kernel.org/linux-csky/
