tree: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features head: c72251ad879056d096d39db21c08cb52e481eb2d commit: 6966d604e2ec4ecf5691aea953538f63597a250d [32/77] s390/mem_detect: move tprot loop to early boot phase config: s390-allnoconfig (attached as .config) compiler: s390x-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 git checkout 6966d604e2ec4ecf5691aea953538f63597a250d # save the attached .config to linux build tree GCC_VERSION=7.2.0 make.cross ARCH=s390 Note: the s390/features HEAD c72251ad879056d096d39db21c08cb52e481eb2d builds fine. It only hurts bisectibility. All errors (new ones prefixed by >>): arch/s390/boot/mem_detect.c: In function 'tprot': >> arch/s390/boot/mem_detect.c:77:12: error: 'EFAULT' undeclared (first use in this function) int rc = -EFAULT; ^~~~~~ arch/s390/boot/mem_detect.c:77:12: note: each undeclared identifier is reported only once for each function it appears in vim +/EFAULT +77 arch/s390/boot/mem_detect.c 73 74 static int tprot(unsigned long addr) 75 { 76 unsigned long pgm_addr; > 77 int rc = -EFAULT; 78 psw_t old = S390_lowcore.program_new_psw; 79 80 S390_lowcore.program_new_psw.mask = __extract_psw(); 81 asm volatile( 82 " larl %[pgm_addr],1f\n" 83 " stg %[pgm_addr],%[psw_pgm_addr]\n" 84 " tprot 0(%[addr]),0\n" 85 " ipm %[rc]\n" 86 " srl %[rc],28\n" 87 "1:\n" 88 : [pgm_addr] "=&d"(pgm_addr), 89 [psw_pgm_addr] "=Q"(S390_lowcore.program_new_psw.addr), 90 [rc] "+&d"(rc) 91 : [addr] "a"(addr) 92 : "cc", "memory"); 93 S390_lowcore.program_new_psw = old; 94 return rc; 95 } 96 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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