diff options
Diffstat (limited to 'arch/s390/mm/extable.c')
| -rw-r--r-- | arch/s390/mm/extable.c | 30 |
1 files changed, 13 insertions, 17 deletions
diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c index 0a0738a473af..a046be1715cf 100644 --- a/arch/s390/mm/extable.c +++ b/arch/s390/mm/extable.c @@ -7,6 +7,7 @@ #include <linux/panic.h> #include <asm/asm-extable.h> #include <asm/extable.h> +#include <asm/fpu.h> const struct exception_table_entry *s390_search_extables(unsigned long addr) { @@ -26,7 +27,7 @@ static bool ex_handler_fixup(const struct exception_table_entry *ex, struct pt_r return true; } -static bool ex_handler_ua_store(const struct exception_table_entry *ex, struct pt_regs *regs) +static bool ex_handler_ua_fault(const struct exception_table_entry *ex, struct pt_regs *regs) { unsigned int reg_err = FIELD_GET(EX_DATA_REG_ERR, ex->data); @@ -35,18 +36,6 @@ static bool ex_handler_ua_store(const struct exception_table_entry *ex, struct p return true; } -static bool ex_handler_ua_load_mem(const struct exception_table_entry *ex, struct pt_regs *regs) -{ - unsigned int reg_addr = FIELD_GET(EX_DATA_REG_ADDR, ex->data); - unsigned int reg_err = FIELD_GET(EX_DATA_REG_ERR, ex->data); - size_t len = FIELD_GET(EX_DATA_LEN, ex->data); - - regs->gprs[reg_err] = -EFAULT; - memset((void *)regs->gprs[reg_addr], 0, len); - regs->psw.addr = extable_fixup(ex); - return true; -} - static bool ex_handler_ua_load_reg(const struct exception_table_entry *ex, bool pair, struct pt_regs *regs) { @@ -77,6 +66,13 @@ static bool ex_handler_zeropad(const struct exception_table_entry *ex, struct pt return true; } +static bool ex_handler_fpc(const struct exception_table_entry *ex, struct pt_regs *regs) +{ + fpu_sfpc(0); + regs->psw.addr = extable_fixup(ex); + return true; +} + bool fixup_exception(struct pt_regs *regs) { const struct exception_table_entry *ex; @@ -89,16 +85,16 @@ bool fixup_exception(struct pt_regs *regs) return ex_handler_fixup(ex, regs); case EX_TYPE_BPF: return ex_handler_bpf(ex, regs); - case EX_TYPE_UA_STORE: - return ex_handler_ua_store(ex, regs); - case EX_TYPE_UA_LOAD_MEM: - return ex_handler_ua_load_mem(ex, regs); + case EX_TYPE_UA_FAULT: + return ex_handler_ua_fault(ex, regs); case EX_TYPE_UA_LOAD_REG: return ex_handler_ua_load_reg(ex, false, regs); case EX_TYPE_UA_LOAD_REGPAIR: return ex_handler_ua_load_reg(ex, true, regs); case EX_TYPE_ZEROPAD: return ex_handler_zeropad(ex, regs); + case EX_TYPE_FPC: + return ex_handler_fpc(ex, regs); } panic("invalid exception table entry"); } |