diff options
| -rw-r--r-- | arch/s390/include/asm/asm-extable.h | 4 | ||||
| -rw-r--r-- | arch/s390/mm/extable.c | 9 |
2 files changed, 11 insertions, 2 deletions
diff --git a/arch/s390/include/asm/asm-extable.h b/arch/s390/include/asm/asm-extable.h index b74f1070ddb2..55a02a153dfc 100644 --- a/arch/s390/include/asm/asm-extable.h +++ b/arch/s390/include/asm/asm-extable.h @@ -12,6 +12,7 @@ #define EX_TYPE_UA_STORE 3 #define EX_TYPE_UA_LOAD_MEM 4 #define EX_TYPE_UA_LOAD_REG 5 +#define EX_TYPE_UA_LOAD_REGPAIR 6 #define EX_DATA_REG_ERR_SHIFT 0 #define EX_DATA_REG_ERR GENMASK(3, 0) @@ -85,4 +86,7 @@ #define EX_TABLE_UA_LOAD_REG(_fault, _target, _regerr, _regzero) \ __EX_TABLE_UA(__ex_table, _fault, _target, EX_TYPE_UA_LOAD_REG, _regerr, _regzero, 0) +#define EX_TABLE_UA_LOAD_REGPAIR(_fault, _target, _regerr, _regzero) \ + __EX_TABLE_UA(__ex_table, _fault, _target, EX_TYPE_UA_LOAD_REGPAIR, _regerr, _regzero, 0) + #endif /* __ASM_EXTABLE_H */ diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c index 1e4d2187541a..fe87291df95d 100644 --- a/arch/s390/mm/extable.c +++ b/arch/s390/mm/extable.c @@ -47,13 +47,16 @@ static bool ex_handler_ua_load_mem(const struct exception_table_entry *ex, struc return true; } -static bool ex_handler_ua_load_reg(const struct exception_table_entry *ex, struct pt_regs *regs) +static bool ex_handler_ua_load_reg(const struct exception_table_entry *ex, + bool pair, struct pt_regs *regs) { unsigned int reg_zero = FIELD_GET(EX_DATA_REG_ADDR, ex->data); unsigned int reg_err = FIELD_GET(EX_DATA_REG_ERR, ex->data); regs->gprs[reg_err] = -EFAULT; regs->gprs[reg_zero] = 0; + if (pair) + regs->gprs[reg_zero + 1] = 0; regs->psw.addr = extable_fixup(ex); return true; } @@ -75,7 +78,9 @@ bool fixup_exception(struct pt_regs *regs) case EX_TYPE_UA_LOAD_MEM: return ex_handler_ua_load_mem(ex, regs); case EX_TYPE_UA_LOAD_REG: - return ex_handler_ua_load_reg(ex, regs); + return ex_handler_ua_load_reg(ex, false, regs); + case EX_TYPE_UA_LOAD_REGPAIR: + return ex_handler_ua_load_reg(ex, true, regs); } panic("invalid exception table entry"); } |