s390: remove all usages of PSW_ADDR_AMODE

This is a leftover from the 31 bit area. For CONFIG_64BIT the usual
operation "y = x | PSW_ADDR_AMODE" is a nop. Therefore remove all
usages of PSW_ADDR_AMODE and make the code a bit less confusing.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Reviewed-by: David Hildenbrand <dahi@linux.vnet.ibm.com>

diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index f16debf..1c4fe12 100644 (file)
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -166,14 +166,14 @@ extern __vector128 init_task_fpu_regs[__NUM_VXRS];
  */
 #define start_thread(regs, new_psw, new_stackp) do {                   \
        regs->psw.mask  = PSW_USER_BITS | PSW_MASK_EA | PSW_MASK_BA;    \
-       regs->psw.addr  = new_psw | PSW_ADDR_AMODE;                     \
+       regs->psw.addr  = new_psw;                                      \
        regs->gprs[15]  = new_stackp;                                   \
        execve_tail();                                                  \
 } while (0)
 
 #define start_thread31(regs, new_psw, new_stackp) do {                 \
        regs->psw.mask  = PSW_USER_BITS | PSW_MASK_BA;                  \
-       regs->psw.addr  = new_psw | PSW_ADDR_AMODE;                     \
+       regs->psw.addr  = new_psw;                                      \
        regs->gprs[15]  = new_stackp;                                   \
        crst_table_downgrade(current->mm, 1UL << 31);                   \
        execve_tail();                                                  \

diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index f00cd35..7423fd0 100644 (file)
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -161,7 +161,7 @@ static inline long regs_return_value(struct pt_regs *regs)
 static inline void instruction_pointer_set(struct pt_regs *regs,
                                           unsigned long val)
 {
-       regs->psw.addr = val | PSW_ADDR_AMODE;
+       regs->psw.addr = val;
 }
 
 int regs_query_register_offset(const char *name);

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 20a5caf..43ea2fe 100644 (file)
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -259,7 +259,7 @@ static void early_pgm_check_handler(void)
        __ctl_store(cr0, 0, 0);
        cr0_new = cr0 & ~(1UL << 28);
        __ctl_load(cr0_new, 0, 0);
-       S390_lowcore.program_old_psw.addr = extable_fixup(fixup)|PSW_ADDR_AMODE;
+       S390_lowcore.program_old_psw.addr = extable_fixup(fixup);
        __ctl_load(cr0, 0, 0);
 }
 
@@ -268,9 +268,9 @@ static noinline __init void setup_lowcore_early(void)
        psw_t psw;
 
        psw.mask = PSW_MASK_BASE | PSW_DEFAULT_KEY | PSW_MASK_EA | PSW_MASK_BA;
-       psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_ext_handler;
+       psw.addr = (unsigned long) s390_base_ext_handler;
        S390_lowcore.external_new_psw = psw;
-       psw.addr = PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
+       psw.addr = (unsigned long) s390_base_pgm_handler;
        S390_lowcore.program_new_psw = psw;
        s390_base_pgm_handler_fn = early_pgm_check_handler;
 }

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 0a5a6b6..f20abdb 100644 (file)
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2057,12 +2057,12 @@ void s390_reset_system(void)
        /* Set new machine check handler */
        S390_lowcore.mcck_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
        S390_lowcore.mcck_new_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) s390_base_mcck_handler;
+               (unsigned long) s390_base_mcck_handler;
 
        /* Set new program check handler */
        S390_lowcore.program_new_psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT;
        S390_lowcore.program_new_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) s390_base_pgm_handler;
+               (unsigned long) s390_base_pgm_handler;
 
        /*
         * Clear subchannel ID and number to signal new kernel that no CCW or

diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index 389db56..6649028 100644 (file)
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -226,7 +226,7 @@ static void enable_singlestep(struct kprobe_ctlblk *kcb,
        __ctl_load(per_kprobe, 9, 11);
        regs->psw.mask |= PSW_MASK_PER;
        regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
-       regs->psw.addr = ip | PSW_ADDR_AMODE;
+       regs->psw.addr = ip;
 }
 NOKPROBE_SYMBOL(enable_singlestep);
 
@@ -238,7 +238,7 @@ static void disable_singlestep(struct kprobe_ctlblk *kcb,
        __ctl_load(kcb->kprobe_saved_ctl, 9, 11);
        regs->psw.mask &= ~PSW_MASK_PER;
        regs->psw.mask |= kcb->kprobe_saved_imask;
-       regs->psw.addr = ip | PSW_ADDR_AMODE;
+       regs->psw.addr = ip;
 }
 NOKPROBE_SYMBOL(disable_singlestep);
 
@@ -460,7 +460,7 @@ static int trampoline_probe_handler(struct kprobe *p, struct pt_regs *regs)
                        break;
        }
 
-       regs->psw.addr = orig_ret_address | PSW_ADDR_AMODE;
+       regs->psw.addr = orig_ret_address;
 
        pop_kprobe(get_kprobe_ctlblk());
        kretprobe_hash_unlock(current, &flags);
@@ -607,7 +607,7 @@ static int kprobe_trap_handler(struct pt_regs *regs, int trapnr)
                 */
                entry = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
                if (entry) {
-                       regs->psw.addr = extable_fixup(entry) | PSW_ADDR_AMODE;
+                       regs->psw.addr = extable_fixup(entry);
                        return 1;
                }
 
@@ -683,7 +683,7 @@ int setjmp_pre_handler(struct kprobe *p, struct pt_regs *regs)
        memcpy(&kcb->jprobe_saved_regs, regs, sizeof(struct pt_regs));
 
        /* setup return addr to the jprobe handler routine */
-       regs->psw.addr = (unsigned long) jp->entry | PSW_ADDR_AMODE;
+       regs->psw.addr = (unsigned long) jp->entry;
        regs->psw.mask &= ~(PSW_MASK_IO | PSW_MASK_EXT);
 
        /* r15 is the stack pointer */

diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 114ee8b..4a41eb7 100644 (file)
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -154,7 +154,7 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
                memset(&frame->childregs, 0, sizeof(struct pt_regs));
                frame->childregs.psw.mask = PSW_KERNEL_BITS | PSW_MASK_DAT |
                                PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
-               frame->childregs.psw.addr = PSW_ADDR_AMODE |
+               frame->childregs.psw.addr =
                                (unsigned long) kernel_thread_starter;
                frame->childregs.gprs[9] = new_stackp; /* function */
                frame->childregs.gprs[10] = arg;

diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index c6878fb..9220db5 100644 (file)
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -301,25 +301,21 @@ static void __init setup_lowcore(void)
        BUILD_BUG_ON(sizeof(struct lowcore) != LC_PAGES * 4096);
        lc = __alloc_bootmem_low(LC_PAGES * PAGE_SIZE, LC_PAGES * PAGE_SIZE, 0);
        lc->restart_psw.mask = PSW_KERNEL_BITS;
-       lc->restart_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) restart_int_handler;
+       lc->restart_psw.addr = (unsigned long) restart_int_handler;
        lc->external_new_psw.mask = PSW_KERNEL_BITS |
                PSW_MASK_DAT | PSW_MASK_MCHECK;
-       lc->external_new_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) ext_int_handler;
+       lc->external_new_psw.addr = (unsigned long) ext_int_handler;
        lc->svc_new_psw.mask = PSW_KERNEL_BITS |
                PSW_MASK_DAT | PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
-       lc->svc_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) system_call;
+       lc->svc_new_psw.addr = (unsigned long) system_call;
        lc->program_new_psw.mask = PSW_KERNEL_BITS |
                PSW_MASK_DAT | PSW_MASK_MCHECK;
-       lc->program_new_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) pgm_check_handler;
+       lc->program_new_psw.addr = (unsigned long) pgm_check_handler;
        lc->mcck_new_psw.mask = PSW_KERNEL_BITS;
-       lc->mcck_new_psw.addr =
-               PSW_ADDR_AMODE | (unsigned long) mcck_int_handler;
+       lc->mcck_new_psw.addr = (unsigned long) mcck_int_handler;
        lc->io_new_psw.mask = PSW_KERNEL_BITS |
                PSW_MASK_DAT | PSW_MASK_MCHECK;
-       lc->io_new_psw.addr = PSW_ADDR_AMODE | (unsigned long) io_int_handler;
+       lc->io_new_psw.addr = (unsigned long) io_int_handler;
        lc->clock_comparator = -1ULL;
        lc->kernel_stack = ((unsigned long) &init_thread_union)
                + THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);

diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 028cc46..d82562c 100644 (file)
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -331,13 +331,13 @@ static int setup_frame(int sig, struct k_sigaction *ka,
        /* Set up to return from userspace.  If provided, use a stub
           already in userspace.  */
        if (ka->sa.sa_flags & SA_RESTORER) {
-               restorer = (unsigned long) ka->sa.sa_restorer | PSW_ADDR_AMODE;
+               restorer = (unsigned long) ka->sa.sa_restorer;
        } else {
                /* Signal frame without vector registers are short ! */
                __u16 __user *svc = (void __user *) frame + frame_size - 2;
                if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
                        return -EFAULT;
-               restorer = (unsigned long) svc | PSW_ADDR_AMODE;
+               restorer = (unsigned long) svc;
        }
 
        /* Set up registers for signal handler */
@@ -347,7 +347,7 @@ static int setup_frame(int sig, struct k_sigaction *ka,
        regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
                (PSW_USER_BITS & PSW_MASK_ASC) |
                (regs->psw.mask & ~PSW_MASK_ASC);
-       regs->psw.addr = (unsigned long) ka->sa.sa_handler | PSW_ADDR_AMODE;
+       regs->psw.addr = (unsigned long) ka->sa.sa_handler;
 
        regs->gprs[2] = sig;
        regs->gprs[3] = (unsigned long) &frame->sc;
@@ -394,13 +394,12 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
        /* Set up to return from userspace.  If provided, use a stub
           already in userspace.  */
        if (ksig->ka.sa.sa_flags & SA_RESTORER) {
-               restorer = (unsigned long)
-                       ksig->ka.sa.sa_restorer | PSW_ADDR_AMODE;
+               restorer = (unsigned long) ksig->ka.sa.sa_restorer;
        } else {
                __u16 __user *svc = &frame->svc_insn;
                if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, svc))
                        return -EFAULT;
-               restorer = (unsigned long) svc | PSW_ADDR_AMODE;
+               restorer = (unsigned long) svc;
        }
 
        /* Create siginfo on the signal stack */
@@ -426,7 +425,7 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
        regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
                (PSW_USER_BITS & PSW_MASK_ASC) |
                (regs->psw.mask & ~PSW_MASK_ASC);
-       regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler | PSW_ADDR_AMODE;
+       regs->psw.addr = (unsigned long) ksig->ka.sa.sa_handler;
 
        regs->gprs[2] = ksig->sig;
        regs->gprs[3] = (unsigned long) &frame->info;

diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index d69d648..6a49b7d 100644 (file)
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -71,7 +71,7 @@ void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
                 const struct exception_table_entry *fixup;
                 fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
                 if (fixup)
-                       regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
+                       regs->psw.addr = extable_fixup(fixup);
                else {
                        enum bug_trap_type btt;
 

diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 1b903f6..95ed8d4 100644 (file)
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -258,7 +258,7 @@ static noinline void do_no_context(struct pt_regs *regs)
        /* Are we prepared to handle this kernel fault?  */
        fixup = search_exception_tables(regs->psw.addr & PSW_ADDR_INSN);
        if (fixup) {
-               regs->psw.addr = extable_fixup(fixup) | PSW_ADDR_AMODE;
+               regs->psw.addr = extable_fixup(fixup);
                return;
        }