root/arch/arm/mm/fsr-2level.c
// SPDX-License-Identifier: GPL-2.0
static struct fsr_info fsr_info[] = {
        /*
         * The following are the standard ARMv3 and ARMv4 aborts.  ARMv5
         * defines these to be "precise" aborts.
         */
        { do_bad,               SIGSEGV, 0,             "vector exception"                 },
        { do_bad,               SIGBUS,  BUS_ADRALN,    "alignment exception"              },
        { do_bad,               SIGKILL, 0,             "terminal exception"               },
        { do_bad,               SIGBUS,  BUS_ADRALN,    "alignment exception"              },
        { do_bad,               SIGBUS,  0,             "external abort on linefetch"      },
        { do_translation_fault, SIGSEGV, SEGV_MAPERR,   "section translation fault"        },
        { do_bad,               SIGBUS,  0,             "external abort on linefetch"      },
        { do_page_fault,        SIGSEGV, SEGV_MAPERR,   "page translation fault"           },
        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section domain fault"             },
        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page domain fault"                },
        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
        { do_sect_fault,        SIGSEGV, SEGV_ACCERR,   "section permission fault"         },
        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
        { do_page_fault,        SIGSEGV, SEGV_ACCERR,   "page permission fault"            },
        /*
         * The following are "imprecise" aborts, which are signalled by bit
         * 10 of the FSR, and may not be recoverable.  These are only
         * supported if the CPU abort handler supports bit 10.
         */
        { do_bad,               SIGBUS,  0,             "unknown 16"                       },
        { do_bad,               SIGBUS,  0,             "unknown 17"                       },
        { do_bad,               SIGBUS,  0,             "unknown 18"                       },
        { do_bad,               SIGBUS,  0,             "unknown 19"                       },
        { do_bad,               SIGBUS,  0,             "lock abort"                       }, /* xscale */
        { do_bad,               SIGBUS,  0,             "unknown 21"                       },
        { do_bad,               SIGBUS,  BUS_OBJERR,    "imprecise external abort"         }, /* xscale */
        { do_bad,               SIGBUS,  0,             "unknown 23"                       },
        { do_bad,               SIGBUS,  0,             "dcache parity error"              }, /* xscale */
        { do_bad,               SIGBUS,  0,             "unknown 25"                       },
        { do_bad,               SIGBUS,  0,             "unknown 26"                       },
        { do_bad,               SIGBUS,  0,             "unknown 27"                       },
        { do_bad,               SIGBUS,  0,             "unknown 28"                       },
        { do_bad,               SIGBUS,  0,             "unknown 29"                       },
        { do_bad,               SIGBUS,  0,             "unknown 30"                       },
        { do_bad,               SIGBUS,  0,             "unknown 31"                       },
};

static struct fsr_info ifsr_info[] = {
        { do_bad,               SIGBUS,  0,             "unknown 0"                        },
        { do_bad,               SIGBUS,  0,             "unknown 1"                        },
        { do_bad,               SIGBUS,  0,             "debug event"                      },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section access flag fault"        },
        { do_bad,               SIGBUS,  0,             "unknown 4"                        },
        { do_translation_fault, SIGSEGV, SEGV_MAPERR,   "section translation fault"        },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page access flag fault"           },
        { do_page_fault,        SIGSEGV, SEGV_MAPERR,   "page translation fault"           },
        { do_bad,               SIGBUS,  0,             "external abort on non-linefetch"  },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "section domain fault"             },
        { do_bad,               SIGBUS,  0,             "unknown 10"                       },
        { do_bad,               SIGSEGV, SEGV_ACCERR,   "page domain fault"                },
        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
        { do_sect_fault,        SIGSEGV, SEGV_ACCERR,   "section permission fault"         },
        { do_bad,               SIGBUS,  0,             "external abort on translation"    },
        { do_page_fault,        SIGSEGV, SEGV_ACCERR,   "page permission fault"            },
        { do_bad,               SIGBUS,  0,             "unknown 16"                       },
        { do_bad,               SIGBUS,  0,             "unknown 17"                       },
        { do_bad,               SIGBUS,  0,             "unknown 18"                       },
        { do_bad,               SIGBUS,  0,             "unknown 19"                       },
        { do_bad,               SIGBUS,  0,             "unknown 20"                       },
        { do_bad,               SIGBUS,  0,             "unknown 21"                       },
        { do_bad,               SIGBUS,  0,             "unknown 22"                       },
        { do_bad,               SIGBUS,  0,             "unknown 23"                       },
        { do_bad,               SIGBUS,  0,             "unknown 24"                       },
        { do_bad,               SIGBUS,  0,             "unknown 25"                       },
        { do_bad,               SIGBUS,  0,             "unknown 26"                       },
        { do_bad,               SIGBUS,  0,             "unknown 27"                       },
        { do_bad,               SIGBUS,  0,             "unknown 28"                       },
        { do_bad,               SIGBUS,  0,             "unknown 29"                       },
        { do_bad,               SIGBUS,  0,             "unknown 30"                       },
        { do_bad,               SIGBUS,  0,             "unknown 31"                       },
};