s390: remove 31 bit support
Remove the 31 bit support in order to reduce maintenance cost and
effectively remove dead code. Since a couple of years there is no
distribution left that comes with a 31 bit kernel.
The 31 bit kernel also has been broken since more than a year before
anybody noticed. In addition I added a removal warning to the kernel
shown at ipl for 5 minutes: a960062e5826 ("s390: add 31 bit warning
message") which let everybody know about the plan to remove 31 bit
code. We didn't get any response.
Given that the last 31 bit only machine was introduced in 1999 let's
remove the code.
Anybody with 31 bit user space code can still use the compat mode.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 31fab26..d94cbba 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -26,20 +26,16 @@
#
CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
-CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
+CFLAGS_sysinfo.o += -w
obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o
obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
-obj-y += dumpstack.o
+obj-y += runtime_instr.o cache.o dumpstack.o
+obj-y += entry64.o reipl64.o relocate_kernel64.o
-obj-y += $(if $(CONFIG_64BIT),entry64.o,entry.o)
-obj-y += $(if $(CONFIG_64BIT),reipl64.o,reipl.o)
-obj-y += $(if $(CONFIG_64BIT),relocate_kernel64.o,relocate_kernel.o)
-
-extra-y += head.o vmlinux.lds
-extra-y += $(if $(CONFIG_64BIT),head64.o,head31.o)
+extra-y += head.o head64.o vmlinux.lds
obj-$(CONFIG_MODULES) += s390_ksyms.o module.o
obj-$(CONFIG_SMP) += smp.o
@@ -56,13 +52,9 @@
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
obj-$(CONFIG_UPROBES) += uprobes.o
-ifdef CONFIG_64BIT
-obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o \
- perf_cpum_cf_events.o
-obj-y += runtime_instr.o cache.o
-endif
+obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o
+obj-$(CONFIG_PERF_EVENTS) += perf_cpum_cf_events.o
# vdso
-obj-$(CONFIG_64BIT) += vdso64/
-obj-$(CONFIG_32BIT) += vdso32/
+obj-y += vdso64/
obj-$(CONFIG_COMPAT) += vdso32/
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index e07e9160..6e94edd 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -166,9 +166,6 @@
DEFINE(__LC_FPREGS_SAVE_AREA, offsetof(struct _lowcore, floating_pt_save_area));
DEFINE(__LC_GPREGS_SAVE_AREA, offsetof(struct _lowcore, gpregs_save_area));
DEFINE(__LC_CREGS_SAVE_AREA, offsetof(struct _lowcore, cregs_save_area));
-#ifdef CONFIG_32BIT
- DEFINE(SAVE_AREA_BASE, offsetof(struct _lowcore, extended_save_area_addr));
-#else /* CONFIG_32BIT */
DEFINE(__LC_DATA_EXC_CODE, offsetof(struct _lowcore, data_exc_code));
DEFINE(__LC_MCCK_FAIL_STOR_ADDR, offsetof(struct _lowcore, failing_storage_address));
DEFINE(__LC_EXT_PARAMS2, offsetof(struct _lowcore, ext_params2));
@@ -183,6 +180,5 @@
DEFINE(__GMAP_ASCE, offsetof(struct gmap, asce));
DEFINE(__SIE_PROG0C, offsetof(struct kvm_s390_sie_block, prog0c));
DEFINE(__SIE_PROG20, offsetof(struct kvm_s390_sie_block, prog20));
-#endif /* CONFIG_32BIT */
return 0;
}
diff --git a/arch/s390/kernel/base.S b/arch/s390/kernel/base.S
index f74a53d3..daed3fd 100644
--- a/arch/s390/kernel/base.S
+++ b/arch/s390/kernel/base.S
@@ -11,8 +11,6 @@
#include <asm/ptrace.h>
#include <asm/sigp.h>
-#ifdef CONFIG_64BIT
-
ENTRY(s390_base_mcck_handler)
basr %r13,0
0: lg %r15,__LC_PANIC_STACK # load panic stack
@@ -131,77 +129,3 @@
.Lfpctl:
.long 0
.previous
-
-#else /* CONFIG_64BIT */
-
-ENTRY(s390_base_mcck_handler)
- basr %r13,0
-0: l %r15,__LC_PANIC_STACK # load panic stack
- ahi %r15,-STACK_FRAME_OVERHEAD
- l %r1,2f-0b(%r13)
- l %r1,0(%r1)
- ltr %r1,%r1
- jz 1f
- basr %r14,%r1
-1: lm %r0,%r15,__LC_GPREGS_SAVE_AREA
- lpsw __LC_MCK_OLD_PSW
-
-2: .long s390_base_mcck_handler_fn
-
- .section .bss
- .align 4
- .globl s390_base_mcck_handler_fn
-s390_base_mcck_handler_fn:
- .long 0
- .previous
-
-ENTRY(s390_base_ext_handler)
- stm %r0,%r15,__LC_SAVE_AREA_ASYNC
- basr %r13,0
-0: ahi %r15,-STACK_FRAME_OVERHEAD
- l %r1,2f-0b(%r13)
- l %r1,0(%r1)
- ltr %r1,%r1
- jz 1f
- basr %r14,%r1
-1: lm %r0,%r15,__LC_SAVE_AREA_ASYNC
- ni __LC_EXT_OLD_PSW+1,0xfd # clear wait state bit
- lpsw __LC_EXT_OLD_PSW
-
-2: .long s390_base_ext_handler_fn
-
- .section .bss
- .align 4
- .globl s390_base_ext_handler_fn
-s390_base_ext_handler_fn:
- .long 0
- .previous
-
-ENTRY(s390_base_pgm_handler)
- stm %r0,%r15,__LC_SAVE_AREA_SYNC
- basr %r13,0
-0: ahi %r15,-STACK_FRAME_OVERHEAD
- l %r1,2f-0b(%r13)
- l %r1,0(%r1)
- ltr %r1,%r1
- jz 1f
- basr %r14,%r1
- lm %r0,%r15,__LC_SAVE_AREA_SYNC
- lpsw __LC_PGM_OLD_PSW
-
-1: lpsw disabled_wait_psw-0b(%r13)
-
-2: .long s390_base_pgm_handler_fn
-
-disabled_wait_psw:
- .align 8
- .long 0x000a0000,0x00000000 + s390_base_pgm_handler
-
- .section .bss
- .align 4
- .globl s390_base_pgm_handler_fn
-s390_base_pgm_handler_fn:
- .long 0
- .previous
-
-#endif /* CONFIG_64BIT */
diff --git a/arch/s390/kernel/cpcmd.c b/arch/s390/kernel/cpcmd.c
index d7b0c4d..199ec92 100644
--- a/arch/s390/kernel/cpcmd.c
+++ b/arch/s390/kernel/cpcmd.c
@@ -27,13 +27,9 @@
register unsigned long reg3 asm ("3") = cmdlen;
asm volatile(
-#ifndef CONFIG_64BIT
- " diag %1,%0,0x8\n"
-#else /* CONFIG_64BIT */
" sam31\n"
" diag %1,%0,0x8\n"
" sam64\n"
-#endif /* CONFIG_64BIT */
: "+d" (reg3) : "d" (reg2) : "cc");
return reg3;
}
@@ -46,17 +42,11 @@
register unsigned long reg5 asm ("5") = *rlen;
asm volatile(
-#ifndef CONFIG_64BIT
- " diag %2,%0,0x8\n"
- " brc 8,1f\n"
- " ar %1,%4\n"
-#else /* CONFIG_64BIT */
" sam31\n"
" diag %2,%0,0x8\n"
" sam64\n"
" brc 8,1f\n"
" agr %1,%4\n"
-#endif /* CONFIG_64BIT */
"1:\n"
: "+d" (reg4), "+d" (reg5)
: "d" (reg2), "d" (reg3), "d" (*rlen) : "cc");
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c
index 8237fc0..2f69243 100644
--- a/arch/s390/kernel/diag.c
+++ b/arch/s390/kernel/diag.c
@@ -18,13 +18,9 @@
int rc = 0;
asm volatile(
-#ifdef CONFIG_64BIT
" sam31\n"
" diag %2,2,0x14\n"
" sam64\n"
-#else
- " diag %2,2,0x14\n"
-#endif
" ipm %0\n"
" srl %0,28\n"
: "=d" (rc), "+d" (_ry2)
@@ -52,7 +48,6 @@
spin_lock_irqsave(&diag210_lock, flags);
diag210_tmp = *addr;
-#ifdef CONFIG_64BIT
asm volatile(
" lhi %0,-1\n"
" sam31\n"
@@ -62,16 +57,6 @@
"1: sam64\n"
EX_TABLE(0b, 1b)
: "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#else
- asm volatile(
- " lhi %0,-1\n"
- " diag %1,0,0x210\n"
- "0: ipm %0\n"
- " srl %0,28\n"
- "1:\n"
- EX_TABLE(0b, 1b)
- : "=&d" (ccode) : "a" (&diag210_tmp) : "cc", "memory");
-#endif
*addr = diag210_tmp;
spin_unlock_irqrestore(&diag210_lock, flags);
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 5334303..8140d10 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -32,12 +32,6 @@
#include <asm/debug.h>
#include <asm/irq.h>
-#ifndef CONFIG_64BIT
-#define ONELONG "%08lx: "
-#else /* CONFIG_64BIT */
-#define ONELONG "%016lx: "
-#endif /* CONFIG_64BIT */
-
enum {
UNUSED, /* Indicates the end of the operand list */
R_8, /* GPR starting at position 8 */
@@ -536,12 +530,10 @@
};
static struct s390_insn opcode[] = {
-#ifdef CONFIG_64BIT
{ "bprp", 0xc5, INSTR_MII_UPI },
{ "bpp", 0xc7, INSTR_SMI_U0RDP },
{ "trtr", 0xd0, INSTR_SS_L0RDRD },
{ "lmd", 0xef, INSTR_SS_RRRDRD3 },
-#endif
{ "spm", 0x04, INSTR_RR_R0 },
{ "balr", 0x05, INSTR_RR_RR },
{ "bctr", 0x06, INSTR_RR_RR },
@@ -725,11 +717,9 @@
};
static struct s390_insn opcode_01[] = {
-#ifdef CONFIG_64BIT
{ "ptff", 0x04, INSTR_E },
{ "pfpo", 0x0a, INSTR_E },
{ "sam64", 0x0e, INSTR_E },
-#endif
{ "pr", 0x01, INSTR_E },
{ "upt", 0x02, INSTR_E },
{ "sckpf", 0x07, INSTR_E },
@@ -741,7 +731,6 @@
};
static struct s390_insn opcode_a5[] = {
-#ifdef CONFIG_64BIT
{ "iihh", 0x00, INSTR_RI_RU },
{ "iihl", 0x01, INSTR_RI_RU },
{ "iilh", 0x02, INSTR_RI_RU },
@@ -758,12 +747,10 @@
{ "llihl", 0x0d, INSTR_RI_RU },
{ "llilh", 0x0e, INSTR_RI_RU },
{ "llill", 0x0f, INSTR_RI_RU },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_a7[] = {
-#ifdef CONFIG_64BIT
{ "tmhh", 0x02, INSTR_RI_RU },
{ "tmhl", 0x03, INSTR_RI_RU },
{ "brctg", 0x07, INSTR_RI_RP },
@@ -771,7 +758,6 @@
{ "aghi", 0x0b, INSTR_RI_RI },
{ "mghi", 0x0d, INSTR_RI_RI },
{ "cghi", 0x0f, INSTR_RI_RI },
-#endif
{ "tmlh", 0x00, INSTR_RI_RU },
{ "tmll", 0x01, INSTR_RI_RU },
{ "brc", 0x04, INSTR_RI_UP },
@@ -785,18 +771,15 @@
};
static struct s390_insn opcode_aa[] = {
-#ifdef CONFIG_64BIT
{ { 0, LONG_INSN_RINEXT }, 0x00, INSTR_RI_RI },
{ "rion", 0x01, INSTR_RI_RI },
{ "tric", 0x02, INSTR_RI_RI },
{ "rioff", 0x03, INSTR_RI_RI },
{ { 0, LONG_INSN_RIEMIT }, 0x04, INSTR_RI_RI },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_b2[] = {
-#ifdef CONFIG_64BIT
{ "stckf", 0x7c, INSTR_S_RD },
{ "lpp", 0x80, INSTR_S_RD },
{ "lcctl", 0x84, INSTR_S_RD },
@@ -819,7 +802,6 @@
{ "tend", 0xf8, INSTR_S_00 },
{ "niai", 0xfa, INSTR_IE_UU },
{ { 0, LONG_INSN_TABORT }, 0xfc, INSTR_S_RD },
-#endif
{ "stidp", 0x02, INSTR_S_RD },
{ "sck", 0x04, INSTR_S_RD },
{ "stck", 0x05, INSTR_S_RD },
@@ -908,7 +890,6 @@
};
static struct s390_insn opcode_b3[] = {
-#ifdef CONFIG_64BIT
{ "maylr", 0x38, INSTR_RRF_F0FF },
{ "mylr", 0x39, INSTR_RRF_F0FF },
{ "mayr", 0x3a, INSTR_RRF_F0FF },
@@ -996,7 +977,6 @@
{ "qaxtr", 0xfd, INSTR_RRF_FUFF },
{ "iextr", 0xfe, INSTR_RRF_F0FR },
{ "rrxtr", 0xff, INSTR_RRF_FFRU },
-#endif
{ "lpebr", 0x00, INSTR_RRE_FF },
{ "lnebr", 0x01, INSTR_RRE_FF },
{ "ltebr", 0x02, INSTR_RRE_FF },
@@ -1091,7 +1071,6 @@
};
static struct s390_insn opcode_b9[] = {
-#ifdef CONFIG_64BIT
{ "lpgr", 0x00, INSTR_RRE_RR },
{ "lngr", 0x01, INSTR_RRE_RR },
{ "ltgr", 0x02, INSTR_RRE_RR },
@@ -1204,7 +1183,6 @@
{ "srk", 0xf9, INSTR_RRF_R0RR2 },
{ "alrk", 0xfa, INSTR_RRF_R0RR2 },
{ "slrk", 0xfb, INSTR_RRF_R0RR2 },
-#endif
{ "kmac", 0x1e, INSTR_RRE_RR },
{ "lrvr", 0x1f, INSTR_RRE_RR },
{ "km", 0x2e, INSTR_RRE_RR },
@@ -1224,7 +1202,6 @@
};
static struct s390_insn opcode_c0[] = {
-#ifdef CONFIG_64BIT
{ "lgfi", 0x01, INSTR_RIL_RI },
{ "xihf", 0x06, INSTR_RIL_RU },
{ "xilf", 0x07, INSTR_RIL_RU },
@@ -1236,7 +1213,6 @@
{ "oilf", 0x0d, INSTR_RIL_RU },
{ "llihf", 0x0e, INSTR_RIL_RU },
{ "llilf", 0x0f, INSTR_RIL_RU },
-#endif
{ "larl", 0x00, INSTR_RIL_RP },
{ "brcl", 0x04, INSTR_RIL_UP },
{ "brasl", 0x05, INSTR_RIL_RP },
@@ -1244,7 +1220,6 @@
};
static struct s390_insn opcode_c2[] = {
-#ifdef CONFIG_64BIT
{ "msgfi", 0x00, INSTR_RIL_RI },
{ "msfi", 0x01, INSTR_RIL_RI },
{ "slgfi", 0x04, INSTR_RIL_RU },
@@ -1257,12 +1232,10 @@
{ "cfi", 0x0d, INSTR_RIL_RI },
{ "clgfi", 0x0e, INSTR_RIL_RU },
{ "clfi", 0x0f, INSTR_RIL_RU },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_c4[] = {
-#ifdef CONFIG_64BIT
{ "llhrl", 0x02, INSTR_RIL_RP },
{ "lghrl", 0x04, INSTR_RIL_RP },
{ "lhrl", 0x05, INSTR_RIL_RP },
@@ -1274,12 +1247,10 @@
{ "lrl", 0x0d, INSTR_RIL_RP },
{ { 0, LONG_INSN_LLGFRL }, 0x0e, INSTR_RIL_RP },
{ "strl", 0x0f, INSTR_RIL_RP },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_c6[] = {
-#ifdef CONFIG_64BIT
{ "exrl", 0x00, INSTR_RIL_RP },
{ "pfdrl", 0x02, INSTR_RIL_UP },
{ "cghrl", 0x04, INSTR_RIL_RP },
@@ -1292,35 +1263,29 @@
{ "crl", 0x0d, INSTR_RIL_RP },
{ { 0, LONG_INSN_CLGFRL }, 0x0e, INSTR_RIL_RP },
{ "clrl", 0x0f, INSTR_RIL_RP },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_c8[] = {
-#ifdef CONFIG_64BIT
{ "mvcos", 0x00, INSTR_SSF_RRDRD },
{ "ectg", 0x01, INSTR_SSF_RRDRD },
{ "csst", 0x02, INSTR_SSF_RRDRD },
{ "lpd", 0x04, INSTR_SSF_RRDRD2 },
{ "lpdg", 0x05, INSTR_SSF_RRDRD2 },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_cc[] = {
-#ifdef CONFIG_64BIT
{ "brcth", 0x06, INSTR_RIL_RP },
{ "aih", 0x08, INSTR_RIL_RI },
{ "alsih", 0x0a, INSTR_RIL_RI },
{ { 0, LONG_INSN_ALSIHN }, 0x0b, INSTR_RIL_RI },
{ "cih", 0x0d, INSTR_RIL_RI },
{ "clih", 0x0f, INSTR_RIL_RI },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_e3[] = {
-#ifdef CONFIG_64BIT
{ "ltg", 0x02, INSTR_RXY_RRRD },
{ "lrag", 0x03, INSTR_RXY_RRRD },
{ "lg", 0x04, INSTR_RXY_RRRD },
@@ -1414,7 +1379,6 @@
{ "clhf", 0xcf, INSTR_RXY_RRRD },
{ { 0, LONG_INSN_MPCIFC }, 0xd0, INSTR_RXY_RRRD },
{ { 0, LONG_INSN_STPCIFC }, 0xd4, INSTR_RXY_RRRD },
-#endif
{ "lrv", 0x1e, INSTR_RXY_RRRD },
{ "lrvh", 0x1f, INSTR_RXY_RRRD },
{ "strv", 0x3e, INSTR_RXY_RRRD },
@@ -1426,7 +1390,6 @@
};
static struct s390_insn opcode_e5[] = {
-#ifdef CONFIG_64BIT
{ "strag", 0x02, INSTR_SSE_RDRD },
{ "mvhhi", 0x44, INSTR_SIL_RDI },
{ "mvghi", 0x48, INSTR_SIL_RDI },
@@ -1439,7 +1402,6 @@
{ { 0, LONG_INSN_CLFHSI }, 0x5d, INSTR_SIL_RDU },
{ { 0, LONG_INSN_TBEGIN }, 0x60, INSTR_SIL_RDU },
{ { 0, LONG_INSN_TBEGINC }, 0x61, INSTR_SIL_RDU },
-#endif
{ "lasp", 0x00, INSTR_SSE_RDRD },
{ "tprot", 0x01, INSTR_SSE_RDRD },
{ "mvcsk", 0x0e, INSTR_SSE_RDRD },
@@ -1448,7 +1410,6 @@
};
static struct s390_insn opcode_e7[] = {
-#ifdef CONFIG_64BIT
{ "lcbb", 0x27, INSTR_RXE_RRRDM },
{ "vgef", 0x13, INSTR_VRV_VVRDM },
{ "vgeg", 0x12, INSTR_VRV_VVRDM },
@@ -1588,11 +1549,9 @@
{ "vfsq", 0xce, INSTR_VRR_VV000MM },
{ "vfs", 0xe2, INSTR_VRR_VVV00MM },
{ "vftci", 0x4a, INSTR_VRI_VVIMM },
-#endif
};
static struct s390_insn opcode_eb[] = {
-#ifdef CONFIG_64BIT
{ "lmg", 0x04, INSTR_RSY_RRRD },
{ "srag", 0x0a, INSTR_RSY_RRRD },
{ "slag", 0x0b, INSTR_RSY_RRRD },
@@ -1659,7 +1618,6 @@
{ "stric", 0x61, INSTR_RSY_RDRM },
{ "mric", 0x62, INSTR_RSY_RDRM },
{ { 0, LONG_INSN_STCCTM }, 0x17, INSTR_RSY_RMRD },
-#endif
{ "rll", 0x1d, INSTR_RSY_RRRD },
{ "mvclu", 0x8e, INSTR_RSY_RRRD },
{ "tp", 0xc0, INSTR_RSL_R0RD },
@@ -1667,7 +1625,6 @@
};
static struct s390_insn opcode_ec[] = {
-#ifdef CONFIG_64BIT
{ "brxhg", 0x44, INSTR_RIE_RRP },
{ "brxlg", 0x45, INSTR_RIE_RRP },
{ { 0, LONG_INSN_RISBLG }, 0x51, INSTR_RIE_RRUUU },
@@ -1701,12 +1658,10 @@
{ "clgib", 0xfd, INSTR_RIS_RURDU },
{ "cib", 0xfe, INSTR_RIS_RURDI },
{ "clib", 0xff, INSTR_RIS_RURDU },
-#endif
{ "", 0, INSTR_INVALID }
};
static struct s390_insn opcode_ed[] = {
-#ifdef CONFIG_64BIT
{ "mayl", 0x38, INSTR_RXF_FRRDF },
{ "myl", 0x39, INSTR_RXF_FRRDF },
{ "may", 0x3a, INSTR_RXF_FRRDF },
@@ -1731,7 +1686,6 @@
{ "czxt", 0xa9, INSTR_RSL_LRDFU },
{ "cdzt", 0xaa, INSTR_RSL_LRDFU },
{ "cxzt", 0xab, INSTR_RSL_LRDFU },
-#endif
{ "ldeb", 0x04, INSTR_RXE_FRRD },
{ "lxdb", 0x05, INSTR_RXE_FRRD },
{ "lxeb", 0x06, INSTR_RXE_FRRD },
@@ -2051,7 +2005,7 @@
else
*ptr++ = ' ';
addr = regs->psw.addr + start - 32;
- ptr += sprintf(ptr, ONELONG, addr);
+ ptr += sprintf(ptr, "%016lx: ", addr);
if (start + opsize >= end)
break;
for (i = 0; i < opsize; i++)
diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c
index a99852e..dc8e204 100644
--- a/arch/s390/kernel/dumpstack.c
+++ b/arch/s390/kernel/dumpstack.c
@@ -18,16 +18,6 @@
#include <asm/dis.h>
#include <asm/ipl.h>
-#ifndef CONFIG_64BIT
-#define LONG "%08lx "
-#define FOURLONG "%08lx %08lx %08lx %08lx\n"
-static int kstack_depth_to_print = 12;
-#else /* CONFIG_64BIT */
-#define LONG "%016lx "
-#define FOURLONG "%016lx %016lx %016lx %016lx\n"
-static int kstack_depth_to_print = 20;
-#endif /* CONFIG_64BIT */
-
/*
* For show_trace we have tree different stack to consider:
* - the panic stack which is used if the kernel stack has overflown
@@ -115,12 +105,12 @@
else
stack = sp;
- for (i = 0; i < kstack_depth_to_print; i++) {
+ for (i = 0; i < 20; i++) {
if (((addr_t) stack & (THREAD_SIZE-1)) == 0)
break;
if ((i * sizeof(long) % 32) == 0)
printk("%s ", i == 0 ? "" : "\n");
- printk(LONG, *stack++);
+ printk("%016lx ", *stack++);
}
printk("\n");
show_trace(task, sp);
@@ -128,10 +118,8 @@
static void show_last_breaking_event(struct pt_regs *regs)
{
-#ifdef CONFIG_64BIT
printk("Last Breaking-Event-Address:\n");
printk(" [<%016lx>] %pSR\n", regs->args[0], (void *)regs->args[0]);
-#endif
}
static inline int mask_bits(struct pt_regs *regs, unsigned long bits)
@@ -155,16 +143,14 @@
mask_bits(regs, PSW_MASK_MCHECK), mask_bits(regs, PSW_MASK_WAIT),
mask_bits(regs, PSW_MASK_PSTATE), mask_bits(regs, PSW_MASK_ASC),
mask_bits(regs, PSW_MASK_CC), mask_bits(regs, PSW_MASK_PM));
-#ifdef CONFIG_64BIT
printk(" EA:%x", mask_bits(regs, PSW_MASK_EA | PSW_MASK_BA));
-#endif
- printk("\n%s GPRS: " FOURLONG, mode,
+ printk("\n%s GPRS: %016lx %016lx %016lx %016lx\n", mode,
regs->gprs[0], regs->gprs[1], regs->gprs[2], regs->gprs[3]);
- printk(" " FOURLONG,
+ printk(" %016lx %016lx %016lx %016lx\n",
regs->gprs[4], regs->gprs[5], regs->gprs[6], regs->gprs[7]);
- printk(" " FOURLONG,
+ printk(" %016lx %016lx %016lx %016lx\n",
regs->gprs[8], regs->gprs[9], regs->gprs[10], regs->gprs[11]);
- printk(" " FOURLONG,
+ printk(" %016lx %016lx %016lx %016lx\n",
regs->gprs[12], regs->gprs[13], regs->gprs[14], regs->gprs[15]);
show_code(regs);
}
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 4427ab7..549a73a 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -64,7 +64,6 @@
" .align 4\n"
" .type savesys_ipl_nss, @function\n"
"savesys_ipl_nss:\n"
-#ifdef CONFIG_64BIT
" stmg 6,15,48(15)\n"
" lgr 14,3\n"
" sam31\n"
@@ -72,13 +71,6 @@
" sam64\n"
" lgr 2,14\n"
" lmg 6,15,48(15)\n"
-#else
- " stm 6,15,24(15)\n"
- " lr 14,3\n"
- " diag 2,14,0x8\n"
- " lr 2,14\n"
- " lm 6,15,24(15)\n"
-#endif
" br 14\n"
" .size savesys_ipl_nss, .-savesys_ipl_nss\n"
" .previous\n");
@@ -240,7 +232,6 @@
static __init void setup_topology(void)
{
-#ifdef CONFIG_64BIT
int max_mnest;
if (!test_facility(11))
@@ -251,7 +242,6 @@
break;
}
topology_max_mnest = max_mnest;
-#endif
}
static void early_pgm_check_handler(void)
@@ -290,58 +280,6 @@
ARRAY_SIZE(S390_lowcore.stfle_fac_list));
}
-static __init void detect_mvpg(void)
-{
-#ifndef CONFIG_64BIT
- int rc;
-
- asm volatile(
- " la 0,0\n"
- " mvpg %2,%2\n"
- "0: la %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "=d" (rc) : "0" (-EOPNOTSUPP), "a" (0) : "memory", "cc", "0");
- if (!rc)
- S390_lowcore.machine_flags |= MACHINE_FLAG_MVPG;
-#endif
-}
-
-static __init void detect_ieee(void)
-{
-#ifndef CONFIG_64BIT
- int rc, tmp;
-
- asm volatile(
- " efpc %1,0\n"
- "0: la %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "=d" (rc), "=d" (tmp): "0" (-EOPNOTSUPP) : "cc");
- if (!rc)
- S390_lowcore.machine_flags |= MACHINE_FLAG_IEEE;
-#endif
-}
-
-static __init void detect_csp(void)
-{
-#ifndef CONFIG_64BIT
- int rc;
-
- asm volatile(
- " la 0,0\n"
- " la 1,0\n"
- " la 2,4\n"
- " csp 0,2\n"
- "0: la %0,0\n"
- "1:\n"
- EX_TABLE(0b,1b)
- : "=d" (rc) : "0" (-EOPNOTSUPP) : "cc", "0", "1", "2");
- if (!rc)
- S390_lowcore.machine_flags |= MACHINE_FLAG_CSP;
-#endif
-}
-
static __init void detect_diag9c(void)
{
unsigned int cpu_address;
@@ -360,7 +298,6 @@
static __init void detect_diag44(void)
{
-#ifdef CONFIG_64BIT
int rc;
asm volatile(
@@ -371,12 +308,10 @@
: "=d" (rc) : "0" (-EOPNOTSUPP) : "cc");
if (!rc)
S390_lowcore.machine_flags |= MACHINE_FLAG_DIAG44;
-#endif
}
static __init void detect_machine_facilities(void)
{
-#ifdef CONFIG_64BIT
if (test_facility(8)) {
S390_lowcore.machine_flags |= MACHINE_FLAG_EDAT1;
__ctl_set_bit(0, 23);
@@ -393,7 +328,6 @@
S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC;
if (test_facility(129))
S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
-#endif
}
static int __init cad_setup(char *str)
@@ -501,9 +435,6 @@
ipl_update_parameters();
setup_boot_command_line();
create_kernel_nss();
- detect_mvpg();
- detect_ieee();
- detect_csp();
detect_diag9c();
detect_diag44();
detect_machine_facilities();
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
deleted file mode 100644
index 398329b..0000000
--- a/arch/s390/kernel/entry.S
+++ /dev/null
@@ -1,966 +0,0 @@
-/*
- * S390 low-level entry points.
- *
- * Copyright IBM Corp. 1999, 2012
- * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com),
- * Hartmut Penner (hp@de.ibm.com),
- * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
- * Heiko Carstens <heiko.carstens@de.ibm.com>
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/processor.h>
-#include <asm/cache.h>
-#include <asm/errno.h>
-#include <asm/ptrace.h>
-#include <asm/thread_info.h>
-#include <asm/asm-offsets.h>
-#include <asm/unistd.h>
-#include <asm/page.h>
-#include <asm/sigp.h>
-#include <asm/irq.h>
-
-__PT_R0 = __PT_GPRS
-__PT_R1 = __PT_GPRS + 4
-__PT_R2 = __PT_GPRS + 8
-__PT_R3 = __PT_GPRS + 12
-__PT_R4 = __PT_GPRS + 16
-__PT_R5 = __PT_GPRS + 20
-__PT_R6 = __PT_GPRS + 24
-__PT_R7 = __PT_GPRS + 28
-__PT_R8 = __PT_GPRS + 32
-__PT_R9 = __PT_GPRS + 36
-__PT_R10 = __PT_GPRS + 40
-__PT_R11 = __PT_GPRS + 44
-__PT_R12 = __PT_GPRS + 48
-__PT_R13 = __PT_GPRS + 524
-__PT_R14 = __PT_GPRS + 56
-__PT_R15 = __PT_GPRS + 60
-
-STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
-STACK_SIZE = 1 << STACK_SHIFT
-STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
-
-_TIF_WORK = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED)
-_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
- _TIF_SYSCALL_TRACEPOINT)
-_CIF_WORK = (_CIF_MCCK_PENDING | _CIF_ASCE)
-_PIF_WORK = (_PIF_PER_TRAP)
-
-#define BASED(name) name-system_call(%r13)
-
- .macro TRACE_IRQS_ON
-#ifdef CONFIG_TRACE_IRQFLAGS
- basr %r2,%r0
- l %r1,BASED(.Lc_hardirqs_on)
- basr %r14,%r1 # call trace_hardirqs_on_caller
-#endif
- .endm
-
- .macro TRACE_IRQS_OFF
-#ifdef CONFIG_TRACE_IRQFLAGS
- basr %r2,%r0
- l %r1,BASED(.Lc_hardirqs_off)
- basr %r14,%r1 # call trace_hardirqs_off_caller
-#endif
- .endm
-
- .macro LOCKDEP_SYS_EXIT
-#ifdef CONFIG_LOCKDEP
- tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jz .+10
- l %r1,BASED(.Lc_lockdep_sys_exit)
- basr %r14,%r1 # call lockdep_sys_exit
-#endif
- .endm
-
- .macro CHECK_STACK stacksize,savearea
-#ifdef CONFIG_CHECK_STACK
- tml %r15,\stacksize - CONFIG_STACK_GUARD
- la %r14,\savearea
- jz stack_overflow
-#endif
- .endm
-
- .macro SWITCH_ASYNC savearea,stack,shift
- tmh %r8,0x0001 # interrupting from user ?
- jnz 1f
- lr %r14,%r9
- sl %r14,BASED(.Lc_critical_start)
- cl %r14,BASED(.Lc_critical_length)
- jhe 0f
- la %r11,\savearea # inside critical section, do cleanup
- bras %r14,cleanup_critical
- tmh %r8,0x0001 # retest problem state after cleanup
- jnz 1f
-0: l %r14,\stack # are we already on the target stack?
- slr %r14,%r15
- sra %r14,\shift
- jnz 1f
- CHECK_STACK 1<<\shift,\savearea
- ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j 2f
-1: l %r15,\stack # load target stack
-2: la %r11,STACK_FRAME_OVERHEAD(%r15)
- .endm
-
- .macro ADD64 high,low,timer
- al \high,\timer
- al \low,4+\timer
- brc 12,.+8
- ahi \high,1
- .endm
-
- .macro SUB64 high,low,timer
- sl \high,\timer
- sl \low,4+\timer
- brc 3,.+8
- ahi \high,-1
- .endm
-
- .macro UPDATE_VTIME high,low,enter_timer
- lm \high,\low,__LC_EXIT_TIMER
- SUB64 \high,\low,\enter_timer
- ADD64 \high,\low,__LC_USER_TIMER
- stm \high,\low,__LC_USER_TIMER
- lm \high,\low,__LC_LAST_UPDATE_TIMER
- SUB64 \high,\low,__LC_EXIT_TIMER
- ADD64 \high,\low,__LC_SYSTEM_TIMER
- stm \high,\low,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),\enter_timer
- .endm
-
- .macro REENABLE_IRQS
- st %r8,__LC_RETURN_PSW
- ni __LC_RETURN_PSW,0xbf
- ssm __LC_RETURN_PSW
- .endm
-
- .section .kprobes.text, "ax"
-
-/*
- * Scheduler resume function, called by switch_to
- * gpr2 = (task_struct *) prev
- * gpr3 = (task_struct *) next
- * Returns:
- * gpr2 = prev
- */
-ENTRY(__switch_to)
- stm %r6,%r15,__SF_GPRS(%r15) # store gprs of prev task
- st %r15,__THREAD_ksp(%r2) # store kernel stack of prev
- l %r4,__THREAD_info(%r2) # get thread_info of prev
- l %r5,__THREAD_info(%r3) # get thread_info of next
- lr %r15,%r5
- ahi %r15,STACK_INIT # end of kernel stack of next
- st %r3,__LC_CURRENT # store task struct of next
- st %r5,__LC_THREAD_INFO # store thread info of next
- st %r15,__LC_KERNEL_STACK # store end of kernel stack
- lctl %c4,%c4,__TASK_pid(%r3) # load pid to control reg. 4
- mvc __LC_CURRENT_PID(4,%r0),__TASK_pid(%r3) # store pid of next
- l %r15,__THREAD_ksp(%r3) # load kernel stack of next
- lm %r6,%r15,__SF_GPRS(%r15) # load gprs of next task
- br %r14
-
-.L__critical_start:
-/*
- * SVC interrupt handler routine. System calls are synchronous events and
- * are executed with interrupts enabled.
- */
-
-ENTRY(system_call)
- stpt __LC_SYNC_ENTER_TIMER
-.Lsysc_stm:
- stm %r8,%r15,__LC_SAVE_AREA_SYNC
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- lhi %r14,_PIF_SYSCALL
-.Lsysc_per:
- l %r15,__LC_KERNEL_STACK
- la %r11,STACK_FRAME_OVERHEAD(%r15) # pointer to pt_regs
-.Lsysc_vtime:
- UPDATE_VTIME %r8,%r9,__LC_SYNC_ENTER_TIMER
- stm %r0,%r7,__PT_R0(%r11)
- mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
- mvc __PT_PSW(8,%r11),__LC_SVC_OLD_PSW
- mvc __PT_INT_CODE(4,%r11),__LC_SVC_ILC
- st %r14,__PT_FLAGS(%r11)
-.Lsysc_do_svc:
- l %r10,__TI_sysc_table(%r12) # 31 bit system call table
- lh %r8,__PT_INT_CODE+2(%r11)
- sla %r8,2 # shift and test for svc0
- jnz .Lsysc_nr_ok
- # svc 0: system call number in %r1
- cl %r1,BASED(.Lnr_syscalls)
- jnl .Lsysc_nr_ok
- sth %r1,__PT_INT_CODE+2(%r11)
- lr %r8,%r1
- sla %r8,2
-.Lsysc_nr_ok:
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- st %r2,__PT_ORIG_GPR2(%r11)
- st %r7,STACK_FRAME_OVERHEAD(%r15)
- l %r9,0(%r8,%r10) # get system call addr.
- tm __TI_flags+3(%r12),_TIF_TRACE
- jnz .Lsysc_tracesys
- basr %r14,%r9 # call sys_xxxx
- st %r2,__PT_R2(%r11) # store return value
-
-.Lsysc_return:
- LOCKDEP_SYS_EXIT
-.Lsysc_tif:
- tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno .Lsysc_restore
- tm __PT_FLAGS+3(%r11),_PIF_WORK
- jnz .Lsysc_work
- tm __TI_flags+3(%r12),_TIF_WORK
- jnz .Lsysc_work # check for thread work
- tm __LC_CPU_FLAGS+3,_CIF_WORK
- jnz .Lsysc_work
-.Lsysc_restore:
- mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
- stpt __LC_EXIT_TIMER
- lm %r0,%r15,__PT_R0(%r11)
- lpsw __LC_RETURN_PSW
-.Lsysc_done:
-
-#
-# One of the work bits is on. Find out which one.
-#
-.Lsysc_work:
- tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
- jo .Lsysc_mcck_pending
- tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jo .Lsysc_reschedule
- tm __PT_FLAGS+3(%r11),_PIF_PER_TRAP
- jo .Lsysc_singlestep
- tm __TI_flags+3(%r12),_TIF_SIGPENDING
- jo .Lsysc_sigpending
- tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
- jo .Lsysc_notify_resume
- tm __LC_CPU_FLAGS+3,_CIF_ASCE
- jo .Lsysc_uaccess
- j .Lsysc_return # beware of critical section cleanup
-
-#
-# _TIF_NEED_RESCHED is set, call schedule
-#
-.Lsysc_reschedule:
- l %r1,BASED(.Lc_schedule)
- la %r14,BASED(.Lsysc_return)
- br %r1 # call schedule
-
-#
-# _CIF_MCCK_PENDING is set, call handler
-#
-.Lsysc_mcck_pending:
- l %r1,BASED(.Lc_handle_mcck)
- la %r14,BASED(.Lsysc_return)
- br %r1 # TIF bit will be cleared by handler
-
-#
-# _CIF_ASCE is set, load user space asce
-#
-.Lsysc_uaccess:
- ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
- lctl %c1,%c1,__LC_USER_ASCE # load primary asce
- j .Lsysc_return
-
-#
-# _TIF_SIGPENDING is set, call do_signal
-#
-.Lsysc_sigpending:
- lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Lc_do_signal)
- basr %r14,%r1 # call do_signal
- tm __PT_FLAGS+3(%r11),_PIF_SYSCALL
- jno .Lsysc_return
- lm %r2,%r7,__PT_R2(%r11) # load svc arguments
- l %r10,__TI_sysc_table(%r12) # 31 bit system call table
- xr %r8,%r8 # svc 0 returns -ENOSYS
- clc __PT_INT_CODE+2(2,%r11),BASED(.Lnr_syscalls+2)
- jnl .Lsysc_nr_ok # invalid svc number -> do svc 0
- lh %r8,__PT_INT_CODE+2(%r11) # load new svc number
- sla %r8,2
- j .Lsysc_nr_ok # restart svc
-
-#
-# _TIF_NOTIFY_RESUME is set, call do_notify_resume
-#
-.Lsysc_notify_resume:
- lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Lc_do_notify_resume)
- la %r14,BASED(.Lsysc_return)
- br %r1 # call do_notify_resume
-
-#
-# _PIF_PER_TRAP is set, call do_per_trap
-#
-.Lsysc_singlestep:
- ni __PT_FLAGS+3(%r11),255-_PIF_PER_TRAP
- lr %r2,%r11 # pass pointer to pt_regs
- l %r1,BASED(.Lc_do_per_trap)
- la %r14,BASED(.Lsysc_return)
- br %r1 # call do_per_trap
-
-#
-# call tracehook_report_syscall_entry/tracehook_report_syscall_exit before
-# and after the system call
-#
-.Lsysc_tracesys:
- l %r1,BASED(.Lc_trace_enter)
- lr %r2,%r11 # pass pointer to pt_regs
- la %r3,0
- xr %r0,%r0
- icm %r0,3,__PT_INT_CODE+2(%r11)
- st %r0,__PT_R2(%r11)
- basr %r14,%r1 # call do_syscall_trace_enter
- cl %r2,BASED(.Lnr_syscalls)
- jnl .Lsysc_tracenogo
- lr %r8,%r2
- sll %r8,2
- l %r9,0(%r8,%r10)
-.Lsysc_tracego:
- lm %r3,%r7,__PT_R3(%r11)
- st %r7,STACK_FRAME_OVERHEAD(%r15)
- l %r2,__PT_ORIG_GPR2(%r11)
- basr %r14,%r9 # call sys_xxx
- st %r2,__PT_R2(%r11) # store return value
-.Lsysc_tracenogo:
- tm __TI_flags+3(%r12),_TIF_TRACE
- jz .Lsysc_return
- l %r1,BASED(.Lc_trace_exit)
- lr %r2,%r11 # pass pointer to pt_regs
- la %r14,BASED(.Lsysc_return)
- br %r1 # call do_syscall_trace_exit
-
-#
-# a new process exits the kernel with ret_from_fork
-#
-ENTRY(ret_from_fork)
- la %r11,STACK_FRAME_OVERHEAD(%r15)
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- l %r1,BASED(.Lc_schedule_tail)
- basr %r14,%r1 # call schedule_tail
- TRACE_IRQS_ON
- ssm __LC_SVC_NEW_PSW # reenable interrupts
- tm __PT_PSW+1(%r11),0x01 # forking a kernel thread ?
- jne .Lsysc_tracenogo
- # it's a kernel thread
- lm %r9,%r10,__PT_R9(%r11) # load gprs
-ENTRY(kernel_thread_starter)
- la %r2,0(%r10)
- basr %r14,%r9
- j .Lsysc_tracenogo
-
-/*
- * Program check handler routine
- */
-
-ENTRY(pgm_check_handler)
- stpt __LC_SYNC_ENTER_TIMER
- stm %r8,%r15,__LC_SAVE_AREA_SYNC
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- lm %r8,%r9,__LC_PGM_OLD_PSW
- tmh %r8,0x0001 # test problem state bit
- jnz 1f # -> fault in user space
- tmh %r8,0x4000 # PER bit set in old PSW ?
- jnz 0f # -> enabled, can't be a double fault
- tm __LC_PGM_ILC+3,0x80 # check for per exception
- jnz .Lpgm_svcper # -> single stepped svc
-0: CHECK_STACK STACK_SIZE,__LC_SAVE_AREA_SYNC
- ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j 2f
-1: UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER
- l %r15,__LC_KERNEL_STACK
-2: la %r11,STACK_FRAME_OVERHEAD(%r15)
- stm %r0,%r7,__PT_R0(%r11)
- mvc __PT_R8(32,%r11),__LC_SAVE_AREA_SYNC
- stm %r8,%r9,__PT_PSW(%r11)
- mvc __PT_INT_CODE(4,%r11),__LC_PGM_ILC
- mvc __PT_INT_PARM_LONG(4,%r11),__LC_TRANS_EXC_CODE
- xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
- tm __LC_PGM_ILC+3,0x80 # check for per exception
- jz 0f
- l %r1,__TI_task(%r12)
- tmh %r8,0x0001 # kernel per event ?
- jz .Lpgm_kprobe
- oi __PT_FLAGS+3(%r11),_PIF_PER_TRAP
- mvc __THREAD_per_address(4,%r1),__LC_PER_ADDRESS
- mvc __THREAD_per_cause(2,%r1),__LC_PER_CODE
- mvc __THREAD_per_paid(1,%r1),__LC_PER_ACCESS_ID
-0: REENABLE_IRQS
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Lc_jump_table)
- la %r10,0x7f
- n %r10,__PT_INT_CODE(%r11)
- je .Lsysc_return
- sll %r10,2
- l %r1,0(%r10,%r1) # load address of handler routine
- lr %r2,%r11 # pass pointer to pt_regs
- basr %r14,%r1 # branch to interrupt-handler
- j .Lsysc_return
-
-#
-# PER event in supervisor state, must be kprobes
-#
-.Lpgm_kprobe:
- REENABLE_IRQS
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Lc_do_per_trap)
- lr %r2,%r11 # pass pointer to pt_regs
- basr %r14,%r1 # call do_per_trap
- j .Lsysc_return
-
-#
-# single stepped system call
-#
-.Lpgm_svcper:
- mvc __LC_RETURN_PSW(4),__LC_SVC_NEW_PSW
- mvc __LC_RETURN_PSW+4(4),BASED(.Lc_sysc_per)
- lhi %r14,_PIF_SYSCALL | _PIF_PER_TRAP
- lpsw __LC_RETURN_PSW # branch to .Lsysc_per and enable irqs
-
-/*
- * IO interrupt handler routine
- */
-
-ENTRY(io_int_handler)
- stck __LC_INT_CLOCK
- stpt __LC_ASYNC_ENTER_TIMER
- stm %r8,%r15,__LC_SAVE_AREA_ASYNC
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- lm %r8,%r9,__LC_IO_OLD_PSW
- tmh %r8,0x0001 # interrupting from user ?
- jz .Lio_skip
- UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
-.Lio_skip:
- SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
- stm %r0,%r7,__PT_R0(%r11)
- mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
- stm %r8,%r9,__PT_PSW(%r11)
- mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
- xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
- TRACE_IRQS_OFF
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
-.Lio_loop:
- l %r1,BASED(.Lc_do_IRQ)
- lr %r2,%r11 # pass pointer to pt_regs
- lhi %r3,IO_INTERRUPT
- tm __PT_INT_CODE+8(%r11),0x80 # adapter interrupt ?
- jz .Lio_call
- lhi %r3,THIN_INTERRUPT
-.Lio_call:
- basr %r14,%r1 # call do_IRQ
- tm __LC_MACHINE_FLAGS+2,0x10 # MACHINE_FLAG_LPAR
- jz .Lio_return
- tpi 0
- jz .Lio_return
- mvc __PT_INT_CODE(12,%r11),__LC_SUBCHANNEL_ID
- j .Lio_loop
-.Lio_return:
- LOCKDEP_SYS_EXIT
- TRACE_IRQS_ON
-.Lio_tif:
- tm __TI_flags+3(%r12),_TIF_WORK
- jnz .Lio_work # there is work to do (signals etc.)
- tm __LC_CPU_FLAGS+3,_CIF_WORK
- jnz .Lio_work
-.Lio_restore:
- mvc __LC_RETURN_PSW(8),__PT_PSW(%r11)
- stpt __LC_EXIT_TIMER
- lm %r0,%r15,__PT_R0(%r11)
- lpsw __LC_RETURN_PSW
-.Lio_done:
-
-#
-# There is work todo, find out in which context we have been interrupted:
-# 1) if we return to user space we can do all _TIF_WORK work
-# 2) if we return to kernel code and preemptive scheduling is enabled check
-# the preemption counter and if it is zero call preempt_schedule_irq
-# Before any work can be done, a switch to the kernel stack is required.
-#
-.Lio_work:
- tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jo .Lio_work_user # yes -> do resched & signal
-#ifdef CONFIG_PREEMPT
- # check for preemptive scheduling
- icm %r0,15,__TI_precount(%r12)
- jnz .Lio_restore # preemption disabled
- tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jno .Lio_restore
- # switch to kernel stack
- l %r1,__PT_R15(%r11)
- ahi %r1,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
- xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
- la %r11,STACK_FRAME_OVERHEAD(%r1)
- lr %r15,%r1
- # TRACE_IRQS_ON already done at .Lio_return, call
- # TRACE_IRQS_OFF to keep things symmetrical
- TRACE_IRQS_OFF
- l %r1,BASED(.Lc_preempt_irq)
- basr %r14,%r1 # call preempt_schedule_irq
- j .Lio_return
-#else
- j .Lio_restore
-#endif
-
-#
-# Need to do work before returning to userspace, switch to kernel stack
-#
-.Lio_work_user:
- l %r1,__LC_KERNEL_STACK
- mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
- xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
- la %r11,STACK_FRAME_OVERHEAD(%r1)
- lr %r15,%r1
-
-#
-# One of the work bits is on. Find out which one.
-#
-.Lio_work_tif:
- tm __LC_CPU_FLAGS+3(%r12),_CIF_MCCK_PENDING
- jo .Lio_mcck_pending
- tm __TI_flags+3(%r12),_TIF_NEED_RESCHED
- jo .Lio_reschedule
- tm __TI_flags+3(%r12),_TIF_SIGPENDING
- jo .Lio_sigpending
- tm __TI_flags+3(%r12),_TIF_NOTIFY_RESUME
- jo .Lio_notify_resume
- tm __LC_CPU_FLAGS+3,_CIF_ASCE
- jo .Lio_uaccess
- j .Lio_return # beware of critical section cleanup
-
-#
-# _CIF_MCCK_PENDING is set, call handler
-#
-.Lio_mcck_pending:
- # TRACE_IRQS_ON already done at .Lio_return
- l %r1,BASED(.Lc_handle_mcck)
- basr %r14,%r1 # TIF bit will be cleared by handler
- TRACE_IRQS_OFF
- j .Lio_return
-
-#
-# _CIF_ASCE is set, load user space asce
-#
-.Lio_uaccess:
- ni __LC_CPU_FLAGS+3,255-_CIF_ASCE
- lctl %c1,%c1,__LC_USER_ASCE # load primary asce
- j .Lio_return
-
-#
-# _TIF_NEED_RESCHED is set, call schedule
-#
-.Lio_reschedule:
- # TRACE_IRQS_ON already done at .Lio_return
- l %r1,BASED(.Lc_schedule)
- ssm __LC_SVC_NEW_PSW # reenable interrupts
- basr %r14,%r1 # call scheduler
- ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
- TRACE_IRQS_OFF
- j .Lio_return
-
-#
-# _TIF_SIGPENDING is set, call do_signal
-#
-.Lio_sigpending:
- # TRACE_IRQS_ON already done at .Lio_return
- l %r1,BASED(.Lc_do_signal)
- ssm __LC_SVC_NEW_PSW # reenable interrupts
- lr %r2,%r11 # pass pointer to pt_regs
- basr %r14,%r1 # call do_signal
- ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
- TRACE_IRQS_OFF
- j .Lio_return
-
-#
-# _TIF_SIGPENDING is set, call do_signal
-#
-.Lio_notify_resume:
- # TRACE_IRQS_ON already done at .Lio_return
- l %r1,BASED(.Lc_do_notify_resume)
- ssm __LC_SVC_NEW_PSW # reenable interrupts
- lr %r2,%r11 # pass pointer to pt_regs
- basr %r14,%r1 # call do_notify_resume
- ssm __LC_PGM_NEW_PSW # disable I/O and ext. interrupts
- TRACE_IRQS_OFF
- j .Lio_return
-
-/*
- * External interrupt handler routine
- */
-
-ENTRY(ext_int_handler)
- stck __LC_INT_CLOCK
- stpt __LC_ASYNC_ENTER_TIMER
- stm %r8,%r15,__LC_SAVE_AREA_ASYNC
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- lm %r8,%r9,__LC_EXT_OLD_PSW
- tmh %r8,0x0001 # interrupting from user ?
- jz .Lext_skip
- UPDATE_VTIME %r14,%r15,__LC_ASYNC_ENTER_TIMER
-.Lext_skip:
- SWITCH_ASYNC __LC_SAVE_AREA_ASYNC,__LC_ASYNC_STACK,STACK_SHIFT
- stm %r0,%r7,__PT_R0(%r11)
- mvc __PT_R8(32,%r11),__LC_SAVE_AREA_ASYNC
- stm %r8,%r9,__PT_PSW(%r11)
- mvc __PT_INT_CODE(4,%r11),__LC_EXT_CPU_ADDR
- mvc __PT_INT_PARM(4,%r11),__LC_EXT_PARAMS
- xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
- TRACE_IRQS_OFF
- l %r1,BASED(.Lc_do_IRQ)
- lr %r2,%r11 # pass pointer to pt_regs
- lhi %r3,EXT_INTERRUPT
- basr %r14,%r1 # call do_IRQ
- j .Lio_return
-
-/*
- * Load idle PSW. The second "half" of this function is in .Lcleanup_idle.
- */
-ENTRY(psw_idle)
- st %r3,__SF_EMPTY(%r15)
- basr %r1,0
- la %r1,.Lpsw_idle_lpsw+4-.(%r1)
- st %r1,__SF_EMPTY+4(%r15)
- oi __SF_EMPTY+4(%r15),0x80
- stck __CLOCK_IDLE_ENTER(%r2)
- stpt __TIMER_IDLE_ENTER(%r2)
-.Lpsw_idle_lpsw:
- lpsw __SF_EMPTY(%r15)
- br %r14
-.Lpsw_idle_end:
-
-.L__critical_end:
-
-/*
- * Machine check handler routines
- */
-
-ENTRY(mcck_int_handler)
- stck __LC_MCCK_CLOCK
- spt __LC_CPU_TIMER_SAVE_AREA # revalidate cpu timer
- lm %r0,%r15,__LC_GPREGS_SAVE_AREA # revalidate gprs
- l %r12,__LC_THREAD_INFO
- l %r13,__LC_SVC_NEW_PSW+4
- lm %r8,%r9,__LC_MCK_OLD_PSW
- tm __LC_MCCK_CODE,0x80 # system damage?
- jo .Lmcck_panic # yes -> rest of mcck code invalid
- la %r14,__LC_CPU_TIMER_SAVE_AREA
- mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
- tm __LC_MCCK_CODE+5,0x02 # stored cpu timer value valid?
- jo 3f
- la %r14,__LC_SYNC_ENTER_TIMER
- clc 0(8,%r14),__LC_ASYNC_ENTER_TIMER
- jl 0f
- la %r14,__LC_ASYNC_ENTER_TIMER
-0: clc 0(8,%r14),__LC_EXIT_TIMER
- jl 1f
- la %r14,__LC_EXIT_TIMER
-1: clc 0(8,%r14),__LC_LAST_UPDATE_TIMER
- jl 2f
- la %r14,__LC_LAST_UPDATE_TIMER
-2: spt 0(%r14)
- mvc __LC_MCCK_ENTER_TIMER(8),0(%r14)
-3: tm __LC_MCCK_CODE+2,0x09 # mwp + ia of old psw valid?
- jno .Lmcck_panic # no -> skip cleanup critical
- tm %r8,0x0001 # interrupting from user ?
- jz .Lmcck_skip
- UPDATE_VTIME %r14,%r15,__LC_MCCK_ENTER_TIMER
-.Lmcck_skip:
- SWITCH_ASYNC __LC_GPREGS_SAVE_AREA+32,__LC_PANIC_STACK,PAGE_SHIFT
- stm %r0,%r7,__PT_R0(%r11)
- mvc __PT_R8(32,%r11),__LC_GPREGS_SAVE_AREA+32
- stm %r8,%r9,__PT_PSW(%r11)
- xc __PT_FLAGS(4,%r11),__PT_FLAGS(%r11)
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- l %r1,BASED(.Lc_do_machine_check)
- lr %r2,%r11 # pass pointer to pt_regs
- basr %r14,%r1 # call s390_do_machine_check
- tm __PT_PSW+1(%r11),0x01 # returning to user ?
- jno .Lmcck_return
- l %r1,__LC_KERNEL_STACK # switch to kernel stack
- mvc STACK_FRAME_OVERHEAD(__PT_SIZE,%r1),0(%r11)
- xc __SF_BACKCHAIN(4,%r1),__SF_BACKCHAIN(%r1)
- la %r11,STACK_FRAME_OVERHEAD(%r15)
- lr %r15,%r1
- ssm __LC_PGM_NEW_PSW # turn dat on, keep irqs off
- tm __LC_CPU_FLAGS+3,_CIF_MCCK_PENDING
- jno .Lmcck_return
- TRACE_IRQS_OFF
- l %r1,BASED(.Lc_handle_mcck)
- basr %r14,%r1 # call s390_handle_mcck
- TRACE_IRQS_ON
-.Lmcck_return:
- mvc __LC_RETURN_MCCK_PSW(8),__PT_PSW(%r11) # move return PSW
- tm __LC_RETURN_MCCK_PSW+1,0x01 # returning to user ?
- jno 0f
- lm %r0,%r15,__PT_R0(%r11)
- stpt __LC_EXIT_TIMER
- lpsw __LC_RETURN_MCCK_PSW
-0: lm %r0,%r15,__PT_R0(%r11)
- lpsw __LC_RETURN_MCCK_PSW
-
-.Lmcck_panic:
- l %r14,__LC_PANIC_STACK
- slr %r14,%r15
- sra %r14,PAGE_SHIFT
- jz 0f
- l %r15,__LC_PANIC_STACK
- j .Lmcck_skip
-0: ahi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j .Lmcck_skip
-
-#
-# PSW restart interrupt handler
-#
-ENTRY(restart_int_handler)
- st %r15,__LC_SAVE_AREA_RESTART
- l %r15,__LC_RESTART_STACK
- ahi %r15,-__PT_SIZE # create pt_regs on stack
- xc 0(__PT_SIZE,%r15),0(%r15)
- stm %r0,%r14,__PT_R0(%r15)
- mvc __PT_R15(4,%r15),__LC_SAVE_AREA_RESTART
- mvc __PT_PSW(8,%r15),__LC_RST_OLD_PSW # store restart old psw
- ahi %r15,-STACK_FRAME_OVERHEAD # create stack frame on stack
- xc 0(STACK_FRAME_OVERHEAD,%r15),0(%r15)
- l %r1,__LC_RESTART_FN # load fn, parm & source cpu
- l %r2,__LC_RESTART_DATA
- l %r3,__LC_RESTART_SOURCE
- ltr %r3,%r3 # test source cpu address
- jm 1f # negative -> skip source stop
-0: sigp %r4,%r3,SIGP_SENSE # sigp sense to source cpu
- brc 10,0b # wait for status stored
-1: basr %r14,%r1 # call function
- stap __SF_EMPTY(%r15) # store cpu address
- lh %r3,__SF_EMPTY(%r15)
-2: sigp %r4,%r3,SIGP_STOP # sigp stop to current cpu
- brc 2,2b
-3: j 3b
-
- .section .kprobes.text, "ax"
-
-#ifdef CONFIG_CHECK_STACK
-/*
- * The synchronous or the asynchronous stack overflowed. We are dead.
- * No need to properly save the registers, we are going to panic anyway.
- * Setup a pt_regs so that show_trace can provide a good call trace.
- */
-stack_overflow:
- l %r15,__LC_PANIC_STACK # change to panic stack
- la %r11,STACK_FRAME_OVERHEAD(%r15)
- stm %r0,%r7,__PT_R0(%r11)
- stm %r8,%r9,__PT_PSW(%r11)
- mvc __PT_R8(32,%r11),0(%r14)
- l %r1,BASED(1f)
- xc __SF_BACKCHAIN(4,%r15),__SF_BACKCHAIN(%r15)
- lr %r2,%r11 # pass pointer to pt_regs
- br %r1 # branch to kernel_stack_overflow
-1: .long kernel_stack_overflow
-#endif
-
-.Lcleanup_table:
- .long system_call + 0x80000000
- .long .Lsysc_do_svc + 0x80000000
- .long .Lsysc_tif + 0x80000000
- .long .Lsysc_restore + 0x80000000
- .long .Lsysc_done + 0x80000000
- .long .Lio_tif + 0x80000000
- .long .Lio_restore + 0x80000000
- .long .Lio_done + 0x80000000
- .long psw_idle + 0x80000000
- .long .Lpsw_idle_end + 0x80000000
-
-cleanup_critical:
- cl %r9,BASED(.Lcleanup_table) # system_call
- jl 0f
- cl %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc
- jl .Lcleanup_system_call
- cl %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif
- jl 0f
- cl %r9,BASED(.Lcleanup_table+12) # .Lsysc_restore
- jl .Lcleanup_sysc_tif
- cl %r9,BASED(.Lcleanup_table+16) # .Lsysc_done
- jl .Lcleanup_sysc_restore
- cl %r9,BASED(.Lcleanup_table+20) # .Lio_tif
- jl 0f
- cl %r9,BASED(.Lcleanup_table+24) # .Lio_restore
- jl .Lcleanup_io_tif
- cl %r9,BASED(.Lcleanup_table+28) # .Lio_done
- jl .Lcleanup_io_restore
- cl %r9,BASED(.Lcleanup_table+32) # psw_idle
- jl 0f
- cl %r9,BASED(.Lcleanup_table+36) # .Lpsw_idle_end
- jl .Lcleanup_idle
-0: br %r14
-
-.Lcleanup_system_call:
- # check if stpt has been executed
- cl %r9,BASED(.Lcleanup_system_call_insn)
- jh 0f
- mvc __LC_SYNC_ENTER_TIMER(8),__LC_ASYNC_ENTER_TIMER
- chi %r11,__LC_SAVE_AREA_ASYNC
- je 0f
- mvc __LC_SYNC_ENTER_TIMER(8),__LC_MCCK_ENTER_TIMER
-0: # check if stm has been executed
- cl %r9,BASED(.Lcleanup_system_call_insn+4)
- jh 0f
- mvc __LC_SAVE_AREA_SYNC(32),0(%r11)
-0: # set up saved registers r12, and r13
- st %r12,16(%r11) # r12 thread-info pointer
- st %r13,20(%r11) # r13 literal-pool pointer
- # check if the user time calculation has been done
- cl %r9,BASED(.Lcleanup_system_call_insn+8)
- jh 0f
- l %r10,__LC_EXIT_TIMER
- l %r15,__LC_EXIT_TIMER+4
- SUB64 %r10,%r15,__LC_SYNC_ENTER_TIMER
- ADD64 %r10,%r15,__LC_USER_TIMER
- st %r10,__LC_USER_TIMER
- st %r15,__LC_USER_TIMER+4
-0: # check if the system time calculation has been done
- cl %r9,BASED(.Lcleanup_system_call_insn+12)
- jh 0f
- l %r10,__LC_LAST_UPDATE_TIMER
- l %r15,__LC_LAST_UPDATE_TIMER+4
- SUB64 %r10,%r15,__LC_EXIT_TIMER
- ADD64 %r10,%r15,__LC_SYSTEM_TIMER
- st %r10,__LC_SYSTEM_TIMER
- st %r15,__LC_SYSTEM_TIMER+4
-0: # update accounting time stamp
- mvc __LC_LAST_UPDATE_TIMER(8),__LC_SYNC_ENTER_TIMER
- # set up saved register 11
- l %r15,__LC_KERNEL_STACK
- la %r9,STACK_FRAME_OVERHEAD(%r15)
- st %r9,12(%r11) # r11 pt_regs pointer
- # fill pt_regs
- mvc __PT_R8(32,%r9),__LC_SAVE_AREA_SYNC
- stm %r0,%r7,__PT_R0(%r9)
- mvc __PT_PSW(8,%r9),__LC_SVC_OLD_PSW
- mvc __PT_INT_CODE(4,%r9),__LC_SVC_ILC
- xc __PT_FLAGS(4,%r9),__PT_FLAGS(%r9)
- mvi __PT_FLAGS+3(%r9),_PIF_SYSCALL
- # setup saved register 15
- st %r15,28(%r11) # r15 stack pointer
- # set new psw address and exit
- l %r9,BASED(.Lcleanup_table+4) # .Lsysc_do_svc + 0x80000000
- br %r14
-.Lcleanup_system_call_insn:
- .long system_call + 0x80000000
- .long .Lsysc_stm + 0x80000000
- .long .Lsysc_vtime + 0x80000000 + 36
- .long .Lsysc_vtime + 0x80000000 + 76
-
-.Lcleanup_sysc_tif:
- l %r9,BASED(.Lcleanup_table+8) # .Lsysc_tif + 0x80000000
- br %r14
-
-.Lcleanup_sysc_restore:
- cl %r9,BASED(.Lcleanup_sysc_restore_insn)
- jhe 0f
- l %r9,12(%r11) # get saved pointer to pt_regs
- mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
- mvc 0(32,%r11),__PT_R8(%r9)
- lm %r0,%r7,__PT_R0(%r9)
-0: lm %r8,%r9,__LC_RETURN_PSW
- br %r14
-.Lcleanup_sysc_restore_insn:
- .long .Lsysc_done - 4 + 0x80000000
-
-.Lcleanup_io_tif:
- l %r9,BASED(.Lcleanup_table+20) # .Lio_tif + 0x80000000
- br %r14
-
-.Lcleanup_io_restore:
- cl %r9,BASED(.Lcleanup_io_restore_insn)
- jhe 0f
- l %r9,12(%r11) # get saved r11 pointer to pt_regs
- mvc __LC_RETURN_PSW(8),__PT_PSW(%r9)
- mvc 0(32,%r11),__PT_R8(%r9)
- lm %r0,%r7,__PT_R0(%r9)
-0: lm %r8,%r9,__LC_RETURN_PSW
- br %r14
-.Lcleanup_io_restore_insn:
- .long .Lio_done - 4 + 0x80000000
-
-.Lcleanup_idle:
- # copy interrupt clock & cpu timer
- mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_INT_CLOCK
- mvc __TIMER_IDLE_EXIT(8,%r2),__LC_ASYNC_ENTER_TIMER
- chi %r11,__LC_SAVE_AREA_ASYNC
- je 0f
- mvc __CLOCK_IDLE_EXIT(8,%r2),__LC_MCCK_CLOCK
- mvc __TIMER_IDLE_EXIT(8,%r2),__LC_MCCK_ENTER_TIMER
-0: # check if stck has been executed
- cl %r9,BASED(.Lcleanup_idle_insn)
- jhe 1f
- mvc __CLOCK_IDLE_ENTER(8,%r2),__CLOCK_IDLE_EXIT(%r2)
- mvc __TIMER_IDLE_ENTER(8,%r2),__TIMER_IDLE_EXIT(%r3)
-1: # account system time going idle
- lm %r9,%r10,__LC_STEAL_TIMER
- ADD64 %r9,%r10,__CLOCK_IDLE_ENTER(%r2)
- SUB64 %r9,%r10,__LC_LAST_UPDATE_CLOCK
- stm %r9,%r10,__LC_STEAL_TIMER
- mvc __LC_LAST_UPDATE_CLOCK(8),__CLOCK_IDLE_EXIT(%r2)
- lm %r9,%r10,__LC_SYSTEM_TIMER
- ADD64 %r9,%r10,__LC_LAST_UPDATE_TIMER
- SUB64 %r9,%r10,__TIMER_IDLE_ENTER(%r2)
- stm %r9,%r10,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),__TIMER_IDLE_EXIT(%r2)
- # prepare return psw
- n %r8,BASED(.Lcleanup_idle_wait) # clear irq & wait state bits
- l %r9,24(%r11) # return from psw_idle
- br %r14
-.Lcleanup_idle_insn:
- .long .Lpsw_idle_lpsw + 0x80000000
-.Lcleanup_idle_wait:
- .long 0xfcfdffff
-
-/*
- * Integer constants
- */
- .align 4
-.Lnr_syscalls:
- .long NR_syscalls
-.Lvtimer_max:
- .quad 0x7fffffffffffffff
-
-/*
- * Symbol constants
- */
-.Lc_do_machine_check: .long s390_do_machine_check
-.Lc_handle_mcck: .long s390_handle_mcck
-.Lc_do_IRQ: .long do_IRQ
-.Lc_do_signal: .long do_signal
-.Lc_do_notify_resume: .long do_notify_resume
-.Lc_do_per_trap: .long do_per_trap
-.Lc_jump_table: .long pgm_check_table
-.Lc_schedule: .long schedule
-#ifdef CONFIG_PREEMPT
-.Lc_preempt_irq: .long preempt_schedule_irq
-#endif
-.Lc_trace_enter: .long do_syscall_trace_enter
-.Lc_trace_exit: .long do_syscall_trace_exit
-.Lc_schedule_tail: .long schedule_tail
-.Lc_sysc_per: .long .Lsysc_per + 0x80000000
-#ifdef CONFIG_TRACE_IRQFLAGS
-.Lc_hardirqs_on: .long trace_hardirqs_on_caller
-.Lc_hardirqs_off: .long trace_hardirqs_off_caller
-#endif
-#ifdef CONFIG_LOCKDEP
-.Lc_lockdep_sys_exit: .long lockdep_sys_exit
-#endif
-.Lc_critical_start: .long .L__critical_start + 0x80000000
-.Lc_critical_length: .long .L__critical_end - .L__critical_start
-
- .section .rodata, "a"
-#define SYSCALL(esa,esame,emu) .long esa
- .globl sys_call_table
-sys_call_table:
-#include "syscalls.S"
-#undef SYSCALL
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index 132f4c9..59b7c64 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -27,11 +27,7 @@
#include <asm/thread_info.h>
#include <asm/page.h>
-#ifdef CONFIG_64BIT
#define ARCH_OFFSET 4
-#else
-#define ARCH_OFFSET 0
-#endif
__HEAD
@@ -67,7 +63,6 @@
# subroutine to set architecture mode
#
.Lsetmode:
-#ifdef CONFIG_64BIT
mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
lhi %r1,2 # mode 2 = esame (dump)
@@ -76,16 +71,12 @@
.fill 16,4,0x0
0: lmh %r0,%r15,0(%r13) # clear high-order half of gprs
sam31 # switch to 31 bit addressing mode
-#else
- mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
-#endif
br %r14
#
# subroutine to wait for end I/O
#
.Lirqwait:
-#ifdef CONFIG_64BIT
mvc 0x1f0(16),.Lnewpsw # set up IO interrupt psw
lpsw .Lwaitpsw
.Lioint:
@@ -93,15 +84,6 @@
.align 8
.Lnewpsw:
.quad 0x0000000080000000,.Lioint
-#else
- mvc 0x78(8),.Lnewpsw # set up IO interrupt psw
- lpsw .Lwaitpsw
-.Lioint:
- br %r14
- .align 8
-.Lnewpsw:
- .long 0x00080000,0x80000000+.Lioint
-#endif
.Lwaitpsw:
.long 0x020a0000,0x80000000+.Lioint
@@ -375,7 +357,6 @@
ENTRY(startup_kdump)
j .Lep_startup_kdump
.Lep_startup_normal:
-#ifdef CONFIG_64BIT
mvi __LC_AR_MODE_ID,1 # set esame flag
slr %r0,%r0 # set cpuid to zero
lhi %r1,2 # mode 2 = esame (dump)
@@ -384,9 +365,6 @@
.fill 16,4,0x0
0: lmh %r0,%r15,0(%r13) # clear high-order half of gprs
sam31 # switch to 31 bit addressing mode
-#else
- mvi __LC_AR_MODE_ID,0 # set ESA flag (mode 0)
-#endif
basr %r13,0 # get base
.LPG0:
xc 0x200(256),0x200 # partially clear lowcore
@@ -396,7 +374,6 @@
spt 6f-.LPG0(%r13)
mvc __LC_LAST_UPDATE_TIMER(8),6f-.LPG0(%r13)
xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
-#ifndef CONFIG_MARCH_G5
# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
.insn s,0xb2b10000,0 # store facilities @ __LC_STFL_FAC_LIST
tm __LC_STFL_FAC_LIST,0x01 # stfle available ?
@@ -435,7 +412,6 @@
# the kernel will crash. Format is number of facility words with bits set,
# followed by the facility words.
-#if defined(CONFIG_64BIT)
#if defined(CONFIG_MARCH_Z13)
.long 3, 0xc100eff2, 0xf46ce800, 0x00400000
#elif defined(CONFIG_MARCH_ZEC12)
@@ -451,35 +427,10 @@
#elif defined(CONFIG_MARCH_Z900)
.long 1, 0xc0000000
#endif
-#else
-#if defined(CONFIG_MARCH_ZEC12)
- .long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z196)
- .long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z10)
- .long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z9_109)
- .long 1, 0x8100c880
-#elif defined(CONFIG_MARCH_Z990)
- .long 1, 0x80002000
-#elif defined(CONFIG_MARCH_Z900)
- .long 1, 0x80000000
-#endif
-#endif
4:
-#endif
-
-#ifdef CONFIG_64BIT
/* Continue with 64bit startup code in head64.S */
sam64 # switch to 64 bit mode
jg startup_continue
-#else
- /* Continue with 31bit startup code in head31.S */
- l %r13,5f-.LPG0(%r13)
- b 0(%r13)
- .align 8
-5: .long startup_continue
-#endif
.align 8
6: .long 0x7fffffff,0xffffffff
diff --git a/arch/s390/kernel/head31.S b/arch/s390/kernel/head31.S
deleted file mode 100644
index 6dbe809..0000000
--- a/arch/s390/kernel/head31.S
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
- * Copyright IBM Corp. 2005, 2010
- *
- * Author(s): Hartmut Penner <hp@de.ibm.com>
- * Martin Schwidefsky <schwidefsky@de.ibm.com>
- * Rob van der Heij <rvdhei@iae.nl>
- * Heiko Carstens <heiko.carstens@de.ibm.com>
- *
- */
-
-#include <linux/init.h>
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/thread_info.h>
-#include <asm/page.h>
-
-__HEAD
-ENTRY(startup_continue)
- basr %r13,0 # get base
-.LPG1:
-
- l %r1,.Lbase_cc-.LPG1(%r13)
- mvc 0(8,%r1),__LC_LAST_UPDATE_CLOCK
- lctl %c0,%c15,.Lctl-.LPG1(%r13) # load control registers
- l %r12,.Lparmaddr-.LPG1(%r13) # pointer to parameter area
- # move IPL device to lowcore
-#
-# Setup stack
-#
- l %r15,.Linittu-.LPG1(%r13)
- st %r15,__LC_THREAD_INFO # cache thread info in lowcore
- mvc __LC_CURRENT(4),__TI_task(%r15)
- ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) # init_task_union+THREAD_SIZE
- st %r15,__LC_KERNEL_STACK # set end of kernel stack
- ahi %r15,-96
-#
-# Save ipl parameters, clear bss memory, initialize storage key for kernel pages,
-# and create a kernel NSS if the SAVESYS= parm is defined
-#
- l %r14,.Lstartup_init-.LPG1(%r13)
- basr %r14,%r14
- lpsw .Lentry-.LPG1(13) # jump to _stext in primary-space,
- # virtual and never return ...
- .align 8
-.Lentry:.long 0x00080000,0x80000000 + _stext
-.Lctl: .long 0x04b50000 # cr0: various things
- .long 0 # cr1: primary space segment table
- .long .Lduct # cr2: dispatchable unit control table
- .long 0 # cr3: instruction authorization
- .long 0 # cr4: instruction authorization
- .long .Lduct # cr5: primary-aste origin
- .long 0 # cr6: I/O interrupts
- .long 0 # cr7: secondary space segment table
- .long 0 # cr8: access registers translation
- .long 0 # cr9: tracing off
- .long 0 # cr10: tracing off
- .long 0 # cr11: tracing off
- .long 0 # cr12: tracing off
- .long 0 # cr13: home space segment table
- .long 0xc0000000 # cr14: machine check handling off
- .long 0 # cr15: linkage stack operations
-.Lbss_bgn: .long __bss_start
-.Lbss_end: .long _end
-.Lparmaddr: .long PARMAREA
-.Linittu: .long init_thread_union
-.Lstartup_init:
- .long startup_init
- .align 64
-.Lduct: .long 0,0,0,0,.Lduald,0,0,0
- .long 0,0,0,0,0,0,0,0
- .align 128
-.Lduald:.rept 8
- .long 0x80000000,0,0,0 # invalid access-list entries
- .endr
-.Lbase_cc:
- .long sched_clock_base_cc
-
-ENTRY(_ehead)
-
- .org 0x100000 - 0x11000 # head.o ends at 0x11000
-#
-# startup-code, running in absolute addressing mode
-#
-ENTRY(_stext)
- basr %r13,0 # get base
-.LPG3:
-# check control registers
- stctl %c0,%c15,0(%r15)
- oi 2(%r15),0x60 # enable sigp emergency & external call
- oi 0(%r15),0x10 # switch on low address protection
- lctl %c0,%c15,0(%r15)
-
-#
- lam 0,15,.Laregs-.LPG3(%r13) # load access regs needed by uaccess
- l %r14,.Lstart-.LPG3(%r13)
- basr %r14,%r14 # call start_kernel
-#
-# We returned from start_kernel ?!? PANIK
-#
- basr %r13,0
- lpsw .Ldw-.(%r13) # load disabled wait psw
-#
- .align 8
-.Ldw: .long 0x000a0000,0x00000000
-.Lstart:.long start_kernel
-.Laregs:.long 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
diff --git a/arch/s390/kernel/head_kdump.S b/arch/s390/kernel/head_kdump.S
index 085a95eb..d05950f 100644
--- a/arch/s390/kernel/head_kdump.S
+++ b/arch/s390/kernel/head_kdump.S
@@ -92,17 +92,9 @@
#else
.align 2
.Lep_startup_kdump:
-#ifdef CONFIG_64BIT
larl %r13,startup_kdump_crash
lpswe 0(%r13)
.align 8
startup_kdump_crash:
.quad 0x0002000080000000,0x0000000000000000 + startup_kdump_crash
-#else
- basr %r13,0
-0: lpsw startup_kdump_crash-0b(%r13)
-.align 8
-startup_kdump_crash:
- .long 0x000a0000,0x00000000 + startup_kdump_crash
-#endif /* CONFIG_64BIT */
#endif /* CONFIG_CRASH_DUMP */
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 5c8651f..c57951f0 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -2062,12 +2062,10 @@
{
struct reset_call *reset;
-#ifdef CONFIG_64BIT
if (diag308_set_works) {
diag308_reset();
return;
}
-#endif
list_for_each_entry(reset, &rcall, list)
reset->fn();
}
diff --git a/arch/s390/kernel/module.c b/arch/s390/kernel/module.c
index 2ca9586..0c1a679 100644
--- a/arch/s390/kernel/module.c
+++ b/arch/s390/kernel/module.c
@@ -38,13 +38,8 @@
#define DEBUGP(fmt , ...)
#endif
-#ifndef CONFIG_64BIT
-#define PLT_ENTRY_SIZE 12
-#else /* CONFIG_64BIT */
#define PLT_ENTRY_SIZE 20
-#endif /* CONFIG_64BIT */
-#ifdef CONFIG_64BIT
void *module_alloc(unsigned long size)
{
if (PAGE_ALIGN(size) > MODULES_LEN)
@@ -53,7 +48,6 @@
GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE,
__builtin_return_address(0));
}
-#endif
void module_arch_freeing_init(struct module *mod)
{
@@ -323,17 +317,11 @@
unsigned int *ip;
ip = me->module_core + me->arch.plt_offset +
info->plt_offset;
-#ifndef CONFIG_64BIT
- ip[0] = 0x0d105810; /* basr 1,0; l 1,6(1); br 1 */
- ip[1] = 0x100607f1;
- ip[2] = val;
-#else /* CONFIG_64BIT */
ip[0] = 0x0d10e310; /* basr 1,0; lg 1,10(1); br 1 */
ip[1] = 0x100a0004;
ip[2] = 0x07f10000;
ip[3] = (unsigned int) (val >> 32);
ip[4] = (unsigned int) val;
-#endif /* CONFIG_64BIT */
info->plt_initialized = 1;
}
if (r_type == R_390_PLTOFF16 ||
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index 3f51cf4..505c17c 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -117,55 +117,36 @@
*/
kill_task = 1;
}
-#ifndef CONFIG_64BIT
+ fpt_save_area = &S390_lowcore.floating_pt_save_area;
+ fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
+ if (!mci->fc) {
+ /*
+ * Floating point control register can't be restored.
+ * Task will be terminated.
+ */
+ asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero));
+ kill_task = 1;
+ } else
+ asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
+
asm volatile(
" ld 0,0(%0)\n"
- " ld 2,8(%0)\n"
- " ld 4,16(%0)\n"
- " ld 6,24(%0)"
- : : "a" (&S390_lowcore.floating_pt_save_area));
-#endif
-
- if (MACHINE_HAS_IEEE) {
-#ifdef CONFIG_64BIT
- fpt_save_area = &S390_lowcore.floating_pt_save_area;
- fpt_creg_save_area = &S390_lowcore.fpt_creg_save_area;
-#else
- fpt_save_area = (void *) S390_lowcore.extended_save_area_addr;
- fpt_creg_save_area = fpt_save_area + 128;
-#endif
- if (!mci->fc) {
- /*
- * Floating point control register can't be restored.
- * Task will be terminated.
- */
- asm volatile("lfpc 0(%0)" : : "a" (&zero), "m" (zero));
- kill_task = 1;
-
- } else
- asm volatile("lfpc 0(%0)" : : "a" (fpt_creg_save_area));
-
- asm volatile(
- " ld 0,0(%0)\n"
- " ld 1,8(%0)\n"
- " ld 2,16(%0)\n"
- " ld 3,24(%0)\n"
- " ld 4,32(%0)\n"
- " ld 5,40(%0)\n"
- " ld 6,48(%0)\n"
- " ld 7,56(%0)\n"
- " ld 8,64(%0)\n"
- " ld 9,72(%0)\n"
- " ld 10,80(%0)\n"
- " ld 11,88(%0)\n"
- " ld 12,96(%0)\n"
- " ld 13,104(%0)\n"
- " ld 14,112(%0)\n"
- " ld 15,120(%0)\n"
- : : "a" (fpt_save_area));
- }
-
-#ifdef CONFIG_64BIT
+ " ld 1,8(%0)\n"
+ " ld 2,16(%0)\n"
+ " ld 3,24(%0)\n"
+ " ld 4,32(%0)\n"
+ " ld 5,40(%0)\n"
+ " ld 6,48(%0)\n"
+ " ld 7,56(%0)\n"
+ " ld 8,64(%0)\n"
+ " ld 9,72(%0)\n"
+ " ld 10,80(%0)\n"
+ " ld 11,88(%0)\n"
+ " ld 12,96(%0)\n"
+ " ld 13,104(%0)\n"
+ " ld 14,112(%0)\n"
+ " ld 15,120(%0)\n"
+ : : "a" (fpt_save_area));
/* Revalidate vector registers */
if (MACHINE_HAS_VX && current->thread.vxrs) {
if (!mci->vr) {
@@ -178,7 +159,6 @@
restore_vx_regs((__vector128 *)
S390_lowcore.vector_save_area_addr);
}
-#endif
/* Revalidate access registers */
asm volatile(
" lam 0,15,0(%0)"
@@ -198,21 +178,14 @@
*/
s390_handle_damage("invalid control registers.");
} else {
-#ifdef CONFIG_64BIT
asm volatile(
" lctlg 0,15,0(%0)"
: : "a" (&S390_lowcore.cregs_save_area));
-#else
- asm volatile(
- " lctl 0,15,0(%0)"
- : : "a" (&S390_lowcore.cregs_save_area));
-#endif
}
/*
* We don't even try to revalidate the TOD register, since we simply
* can't write something sensible into that register.
*/
-#ifdef CONFIG_64BIT
/*
* See if we can revalidate the TOD programmable register with its
* old contents (should be zero) otherwise set it to zero.
@@ -228,7 +201,6 @@
" sckpf"
: : "a" (&S390_lowcore.tod_progreg_save_area)
: "0", "cc");
-#endif
/* Revalidate clock comparator register */
set_clock_comparator(S390_lowcore.clock_comparator);
/* Check if old PSW is valid */
@@ -280,19 +252,11 @@
if (mci->b) {
/* Processing backup -> verify if we can survive this */
u64 z_mcic, o_mcic, t_mcic;
-#ifdef CONFIG_64BIT
z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<29);
o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
1ULL<<30 | 1ULL<<21 | 1ULL<<20 | 1ULL<<17 |
1ULL<<16);
-#else
- z_mcic = (1ULL<<63 | 1ULL<<59 | 1ULL<<57 | 1ULL<<50 |
- 1ULL<<29);
- o_mcic = (1ULL<<43 | 1ULL<<42 | 1ULL<<41 | 1ULL<<40 |
- 1ULL<<36 | 1ULL<<35 | 1ULL<<34 | 1ULL<<32 |
- 1ULL<<30 | 1ULL<<20 | 1ULL<<17 | 1ULL<<16);
-#endif
t_mcic = *(u64 *)mci;
if (((t_mcic & z_mcic) != 0) ||
diff --git a/arch/s390/kernel/pgm_check.S b/arch/s390/kernel/pgm_check.S
index f6f8886..036aa01 100644
--- a/arch/s390/kernel/pgm_check.S
+++ b/arch/s390/kernel/pgm_check.S
@@ -6,19 +6,13 @@
#include <linux/linkage.h>
-#ifdef CONFIG_32BIT
-#define PGM_CHECK_64BIT(handler) .long default_trap_handler
-#else
-#define PGM_CHECK_64BIT(handler) .long handler
-#endif
-
#define PGM_CHECK(handler) .long handler
#define PGM_CHECK_DEFAULT PGM_CHECK(default_trap_handler)
/*
* The program check table contains exactly 128 (0x00-0x7f) entries. Each
- * line defines the 31 and/or 64 bit function to be called corresponding
- * to the program check interruption code.
+ * line defines the function to be called corresponding to the program check
+ * interruption code.
*/
.section .rodata, "a"
ENTRY(pgm_check_table)
@@ -46,10 +40,10 @@
PGM_CHECK(operand_exception) /* 15 */
PGM_CHECK_DEFAULT /* 16 */
PGM_CHECK_DEFAULT /* 17 */
-PGM_CHECK_64BIT(transaction_exception) /* 18 */
+PGM_CHECK(transaction_exception) /* 18 */
PGM_CHECK_DEFAULT /* 19 */
PGM_CHECK_DEFAULT /* 1a */
-PGM_CHECK_64BIT(vector_exception) /* 1b */
+PGM_CHECK(vector_exception) /* 1b */
PGM_CHECK(space_switch_exception) /* 1c */
PGM_CHECK(hfp_sqrt_exception) /* 1d */
PGM_CHECK_DEFAULT /* 1e */
@@ -78,10 +72,10 @@
PGM_CHECK_DEFAULT /* 35 */
PGM_CHECK_DEFAULT /* 36 */
PGM_CHECK_DEFAULT /* 37 */
-PGM_CHECK_64BIT(do_dat_exception) /* 38 */
-PGM_CHECK_64BIT(do_dat_exception) /* 39 */
-PGM_CHECK_64BIT(do_dat_exception) /* 3a */
-PGM_CHECK_64BIT(do_dat_exception) /* 3b */
+PGM_CHECK(do_dat_exception) /* 38 */
+PGM_CHECK(do_dat_exception) /* 39 */
+PGM_CHECK(do_dat_exception) /* 3a */
+PGM_CHECK(do_dat_exception) /* 3b */
PGM_CHECK_DEFAULT /* 3c */
PGM_CHECK_DEFAULT /* 3d */
PGM_CHECK_DEFAULT /* 3e */
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 13fc097..dc5edc2 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -79,13 +79,11 @@
{
}
-#ifdef CONFIG_64BIT
void arch_release_task_struct(struct task_struct *tsk)
{
if (tsk->thread.vxrs)
kfree(tsk->thread.vxrs);
}
-#endif
int copy_thread(unsigned long clone_flags, unsigned long new_stackp,
unsigned long arg, struct task_struct *p)
@@ -144,19 +142,6 @@
p->thread.ri_signum = 0;
frame->childregs.psw.mask &= ~PSW_MASK_RI;
-#ifndef CONFIG_64BIT
- /*
- * save fprs to current->thread.fp_regs to merge them with
- * the emulated registers and then copy the result to the child.
- */
- save_fp_ctl(¤t->thread.fp_regs.fpc);
- save_fp_regs(current->thread.fp_regs.fprs);
- memcpy(&p->thread.fp_regs, ¤t->thread.fp_regs,
- sizeof(s390_fp_regs));
- /* Set a new TLS ? */
- if (clone_flags & CLONE_SETTLS)
- p->thread.acrs[0] = frame->childregs.gprs[6];
-#else /* CONFIG_64BIT */
/* Save the fpu registers to new thread structure. */
save_fp_ctl(&p->thread.fp_regs.fpc);
save_fp_regs(p->thread.fp_regs.fprs);
@@ -172,15 +157,13 @@
p->thread.acrs[1] = (unsigned int)tls;
}
}
-#endif /* CONFIG_64BIT */
return 0;
}
asmlinkage void execve_tail(void)
{
current->thread.fp_regs.fpc = 0;
- if (MACHINE_HAS_IEEE)
- asm volatile("sfpc %0,%0" : : "d" (0));
+ asm volatile("sfpc %0,%0" : : "d" (0));
}
/*
@@ -188,18 +171,8 @@
*/
int dump_fpu (struct pt_regs * regs, s390_fp_regs *fpregs)
{
-#ifndef CONFIG_64BIT
- /*
- * save fprs to current->thread.fp_regs to merge them with
- * the emulated registers and then copy the result to the dump.
- */
- save_fp_ctl(¤t->thread.fp_regs.fpc);
- save_fp_regs(current->thread.fp_regs.fprs);
- memcpy(fpregs, ¤t->thread.fp_regs, sizeof(s390_fp_regs));
-#else /* CONFIG_64BIT */
save_fp_ctl(&fpregs->fpc);
save_fp_regs(fpregs->fprs);
-#endif /* CONFIG_64BIT */
return 1;
}
EXPORT_SYMBOL(dump_fpu);
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index eabfb45..d363c9c 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -44,7 +44,6 @@
struct thread_struct *thread = &task->thread;
struct per_regs old, new;
-#ifdef CONFIG_64BIT
/* Take care of the enable/disable of transactional execution. */
if (MACHINE_HAS_TE || MACHINE_HAS_VX) {
unsigned long cr, cr_new;
@@ -80,7 +79,6 @@
__ctl_load(cr_new, 2, 2);
}
}
-#endif
/* Copy user specified PER registers */
new.control = thread->per_user.control;
new.start = thread->per_user.start;
@@ -93,10 +91,8 @@
new.control |= PER_EVENT_BRANCH;
else
new.control |= PER_EVENT_IFETCH;
-#ifdef CONFIG_64BIT
new.control |= PER_CONTROL_SUSPENSION;
new.control |= PER_EVENT_TRANSACTION_END;
-#endif
if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
new.control |= PER_EVENT_IFETCH;
new.start = 0;
@@ -146,11 +142,7 @@
task->thread.per_flags = 0;
}
-#ifndef CONFIG_64BIT
-# define __ADDR_MASK 3
-#else
-# define __ADDR_MASK 7
-#endif
+#define __ADDR_MASK 7
static inline unsigned long __peek_user_per(struct task_struct *child,
addr_t addr)
@@ -223,7 +215,6 @@
* access registers are stored in the thread structure
*/
offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_64BIT
/*
* Very special case: old & broken 64 bit gdb reading
* from acrs[15]. Result is a 64 bit value. Read the
@@ -232,8 +223,7 @@
if (addr == (addr_t) &dummy->regs.acrs[15])
tmp = ((unsigned long) child->thread.acrs[15]) << 32;
else
-#endif
- tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
+ tmp = *(addr_t *)((addr_t) &child->thread.acrs + offset);
} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
/*
@@ -261,12 +251,10 @@
* or the child->thread.vxrs array
*/
offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
if (child->thread.vxrs)
tmp = *(addr_t *)
((addr_t) child->thread.vxrs + 2*offset);
else
-#endif
tmp = *(addr_t *)
((addr_t) &child->thread.fp_regs.fprs + offset);
@@ -293,11 +281,9 @@
* an alignment of 4. Programmers from hell...
*/
mask = __ADDR_MASK;
-#ifdef CONFIG_64BIT
if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs &&
addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2)
mask = 3;
-#endif
if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
return -EIO;
@@ -370,7 +356,6 @@
* access registers are stored in the thread structure
*/
offset = addr - (addr_t) &dummy->regs.acrs;
-#ifdef CONFIG_64BIT
/*
* Very special case: old & broken 64 bit gdb writing
* to acrs[15] with a 64 bit value. Ignore the lower
@@ -380,8 +365,7 @@
if (addr == (addr_t) &dummy->regs.acrs[15])
child->thread.acrs[15] = (unsigned int) (data >> 32);
else
-#endif
- *(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
+ *(addr_t *)((addr_t) &child->thread.acrs + offset) = data;
} else if (addr == (addr_t) &dummy->regs.orig_gpr2) {
/*
@@ -411,12 +395,10 @@
* or the child->thread.vxrs array
*/
offset = addr - (addr_t) &dummy->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
if (child->thread.vxrs)
*(addr_t *)((addr_t)
child->thread.vxrs + 2*offset) = data;
else
-#endif
*(addr_t *)((addr_t)
&child->thread.fp_regs.fprs + offset) = data;
@@ -441,11 +423,9 @@
* an alignment of 4. Programmers from hell indeed...
*/
mask = __ADDR_MASK;
-#ifdef CONFIG_64BIT
if (addr >= (addr_t) &((struct user *) NULL)->regs.acrs &&
addr < (addr_t) &((struct user *) NULL)->regs.orig_gpr2)
mask = 3;
-#endif
if ((addr & mask) || addr > sizeof(struct user) - __ADDR_MASK)
return -EIO;
@@ -649,12 +629,10 @@
* or the child->thread.vxrs array
*/
offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
if (child->thread.vxrs)
tmp = *(__u32 *)
((addr_t) child->thread.vxrs + 2*offset);
else
-#endif
tmp = *(__u32 *)
((addr_t) &child->thread.fp_regs.fprs + offset);
@@ -776,12 +754,10 @@
* or the child->thread.vxrs array
*/
offset = addr - (addr_t) &dummy32->regs.fp_regs.fprs;
-#ifdef CONFIG_64BIT
if (child->thread.vxrs)
*(__u32 *)((addr_t)
child->thread.vxrs + 2*offset) = tmp;
else
-#endif
*(__u32 *)((addr_t)
&child->thread.fp_regs.fprs + offset) = tmp;
@@ -979,16 +955,13 @@
if (target == current) {
save_fp_ctl(&target->thread.fp_regs.fpc);
save_fp_regs(target->thread.fp_regs.fprs);
- }
-#ifdef CONFIG_64BIT
- else if (target->thread.vxrs) {
+ } else if (target->thread.vxrs) {
int i;
for (i = 0; i < __NUM_VXRS_LOW; i++)
target->thread.fp_regs.fprs[i] =
*(freg_t *)(target->thread.vxrs + i);
}
-#endif
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.fp_regs, 0, -1);
}
@@ -1026,23 +999,18 @@
if (target == current) {
restore_fp_ctl(&target->thread.fp_regs.fpc);
restore_fp_regs(target->thread.fp_regs.fprs);
- }
-#ifdef CONFIG_64BIT
- else if (target->thread.vxrs) {
+ } else if (target->thread.vxrs) {
int i;
for (i = 0; i < __NUM_VXRS_LOW; i++)
*(freg_t *)(target->thread.vxrs + i) =
target->thread.fp_regs.fprs[i];
}
-#endif
}
return rc;
}
-#ifdef CONFIG_64BIT
-
static int s390_last_break_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
@@ -1182,8 +1150,6 @@
return rc;
}
-#endif
-
static int s390_system_call_get(struct task_struct *target,
const struct user_regset *regset,
unsigned int pos, unsigned int count,
@@ -1229,7 +1195,6 @@
.get = s390_system_call_get,
.set = s390_system_call_set,
},
-#ifdef CONFIG_64BIT
{
.core_note_type = NT_S390_LAST_BREAK,
.n = 1,
@@ -1262,7 +1227,6 @@
.get = s390_vxrs_high_get,
.set = s390_vxrs_high_set,
},
-#endif
};
static const struct user_regset_view user_s390_view = {
diff --git a/arch/s390/kernel/reipl.S b/arch/s390/kernel/reipl.S
deleted file mode 100644
index dd8016b..0000000
--- a/arch/s390/kernel/reipl.S
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * S390 version
- * Copyright IBM Corp. 2000
- * Author(s): Holger Smolinski (Holger.Smolinski@de.ibm.com)
- */
-
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/sigp.h>
-
-#
-# store_status: Empty implementation until kdump is supported on 31 bit
-#
-ENTRY(store_status)
- br %r14
-
-#
-# do_reipl_asm
-# Parameter: r2 = schid of reipl device
-#
-ENTRY(do_reipl_asm)
- basr %r13,0
-.Lpg0: lpsw .Lnewpsw-.Lpg0(%r13)
-.Lpg1: # do store status of all registers
-
- stm %r0,%r15,__LC_GPREGS_SAVE_AREA
- stctl %c0,%c15,__LC_CREGS_SAVE_AREA
- stam %a0,%a15,__LC_AREGS_SAVE_AREA
- l %r10,.Ldump_pfx-.Lpg0(%r13)
- mvc __LC_PREFIX_SAVE_AREA(4),0(%r10)
- stckc .Lclkcmp-.Lpg0(%r13)
- mvc __LC_CLOCK_COMP_SAVE_AREA(8),.Lclkcmp-.Lpg0(%r13)
- stpt __LC_CPU_TIMER_SAVE_AREA
- st %r13, __LC_PSW_SAVE_AREA+4
- lctl %c6,%c6,.Lall-.Lpg0(%r13)
- lr %r1,%r2
- mvc __LC_PGM_NEW_PSW(8),.Lpcnew-.Lpg0(%r13)
- stsch .Lschib-.Lpg0(%r13)
- oi .Lschib+5-.Lpg0(%r13),0x84
-.Lecs: xi .Lschib+27-.Lpg0(%r13),0x01
- msch .Lschib-.Lpg0(%r13)
- lhi %r0,5
-.Lssch: ssch .Liplorb-.Lpg0(%r13)
- jz .L001
- brct %r0,.Lssch
- bas %r14,.Ldisab-.Lpg0(%r13)
-.L001: mvc __LC_IO_NEW_PSW(8),.Lionew-.Lpg0(%r13)
-.Ltpi: lpsw .Lwaitpsw-.Lpg0(%r13)
-.Lcont: c %r1,__LC_SUBCHANNEL_ID
- jnz .Ltpi
- clc __LC_IO_INT_PARM(4),.Liplorb-.Lpg0(%r13)
- jnz .Ltpi
- tsch .Liplirb-.Lpg0(%r13)
- tm .Liplirb+9-.Lpg0(%r13),0xbf
- jz .L002
- bas %r14,.Ldisab-.Lpg0(%r13)
-.L002: tm .Liplirb+8-.Lpg0(%r13),0xf3
- jz .L003
- bas %r14,.Ldisab-.Lpg0(%r13)
-.L003: st %r1,__LC_SUBCHANNEL_ID
- lpsw 0
- sigp 0,0,SIGP_RESTART
-.Ldisab: st %r14,.Ldispsw+4-.Lpg0(%r13)
- lpsw .Ldispsw-.Lpg0(%r13)
- .align 8
-.Lclkcmp: .quad 0x0000000000000000
-.Lall: .long 0xff000000
-.Ldump_pfx: .long dump_prefix_page
- .align 8
-.Lnewpsw: .long 0x00080000,0x80000000+.Lpg1
-.Lpcnew: .long 0x00080000,0x80000000+.Lecs
-.Lionew: .long 0x00080000,0x80000000+.Lcont
-.Lwaitpsw: .long 0x020a0000,0x00000000+.Ltpi
-.Ldispsw: .long 0x000a0000,0x00000000
-.Liplccws: .long 0x02000000,0x60000018
- .long 0x08000008,0x20000001
-.Liplorb: .long 0x0049504c,0x0040ff80
- .long 0x00000000+.Liplccws
-.Lschib: .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
-.Liplirb: .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
- .long 0x00000000,0x00000000
diff --git a/arch/s390/kernel/relocate_kernel.S b/arch/s390/kernel/relocate_kernel.S
deleted file mode 100644
index f4e6f20..0000000
--- a/arch/s390/kernel/relocate_kernel.S
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * Copyright IBM Corp. 2005
- *
- * Author(s): Rolf Adelsberger,
- * Heiko Carstens <heiko.carstens@de.ibm.com>
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/sigp.h>
-
-/*
- * moves the new kernel to its destination...
- * %r2 = pointer to first kimage_entry_t
- * %r3 = start address - where to jump to after the job is done...
- *
- * %r5 will be used as temp. storage
- * %r6 holds the destination address
- * %r7 = PAGE_SIZE
- * %r8 holds the source address
- * %r9 = PAGE_SIZE
- * %r10 is a page mask
- */
-
- .text
-ENTRY(relocate_kernel)
- basr %r13,0 # base address
- .base:
- stnsm sys_msk-.base(%r13),0xfb # disable DAT
- stctl %c0,%c15,ctlregs-.base(%r13)
- stm %r0,%r15,gprregs-.base(%r13)
- la %r1,load_psw-.base(%r13)
- mvc 0(8,%r0),0(%r1)
- la %r0,.back-.base(%r13)
- st %r0,4(%r0)
- oi 4(%r0),0x80
- mvc 0x68(8,%r0),0(%r1)
- la %r0,.back_pgm-.base(%r13)
- st %r0,0x6c(%r0)
- oi 0x6c(%r0),0x80
- lhi %r0,0
- diag %r0,%r0,0x308
- .back:
- basr %r13,0
- .back_base:
- oi have_diag308-.back_base(%r13),0x01
- lctl %c0,%c15,ctlregs-.back_base(%r13)
- lm %r0,%r15,gprregs-.back_base(%r13)
- j .start_reloc
- .back_pgm:
- lm %r0,%r15,gprregs-.base(%r13)
- .start_reloc:
- lhi %r10,-1 # preparing the mask
- sll %r10,12 # shift it such that it becomes 0xf000
- .top:
- lhi %r7,4096 # load PAGE_SIZE in r7
- lhi %r9,4096 # load PAGE_SIZE in r9
- l %r5,0(%r2) # read another word for indirection page
- ahi %r2,4 # increment pointer
- tml %r5,0x1 # is it a destination page?
- je .indir_check # NO, goto "indir_check"
- lr %r6,%r5 # r6 = r5
- nr %r6,%r10 # mask it out and...
- j .top # ...next iteration
- .indir_check:
- tml %r5,0x2 # is it a indirection page?
- je .done_test # NO, goto "done_test"
- nr %r5,%r10 # YES, mask out,
- lr %r2,%r5 # move it into the right register,
- j .top # and read next...
- .done_test:
- tml %r5,0x4 # is it the done indicator?
- je .source_test # NO! Well, then it should be the source indicator...
- j .done # ok, lets finish it here...
- .source_test:
- tml %r5,0x8 # it should be a source indicator...
- je .top # NO, ignore it...
- lr %r8,%r5 # r8 = r5
- nr %r8,%r10 # masking
- 0: mvcle %r6,%r8,0x0 # copy PAGE_SIZE bytes from r8 to r6 - pad with 0
- jo 0b
- j .top
- .done:
- sr %r0,%r0 # clear register r0
- la %r4,load_psw-.base(%r13) # load psw-address into the register
- o %r3,4(%r4) # or load address into psw
- st %r3,4(%r4)
- mvc 0(8,%r0),0(%r4) # copy psw to absolute address 0
- tm have_diag308-.base(%r13),0x01
- jno .no_diag308
- diag %r0,%r0,0x308
- .no_diag308:
- sr %r1,%r1 # clear %r1
- sr %r2,%r2 # clear %r2
- sigp %r1,%r2,SIGP_SET_ARCHITECTURE # set cpuid to zero
- lpsw 0 # hopefully start new kernel...
-
- .align 8
- load_psw:
- .long 0x00080000,0x80000000
- sys_msk:
- .quad 0
- ctlregs:
- .rept 16
- .long 0
- .endr
- gprregs:
- .rept 16
- .long 0
- .endr
- have_diag308:
- .byte 0
- .align 8
- relocate_kernel_end:
- .align 8
- .globl relocate_kernel_len
- relocate_kernel_len:
- .quad relocate_kernel_end - relocate_kernel
diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S
index 7e77e03..43c3169 100644
--- a/arch/s390/kernel/sclp.S
+++ b/arch/s390/kernel/sclp.S
@@ -36,21 +36,17 @@
ahi %r15,-96 # create stack frame
la %r8,LC_EXT_NEW_PSW # register int handler
la %r9,.LextpswS1-.LbaseS1(%r13)
-#ifdef CONFIG_64BIT
tm LC_AR_MODE_ID,1
jno .Lesa1
la %r8,LC_EXT_NEW_PSW_64 # register int handler 64 bit
la %r9,.LextpswS1_64-.LbaseS1(%r13)
.Lesa1:
-#endif
mvc .LoldpswS1-.LbaseS1(16,%r13),0(%r8)
mvc 0(16,%r8),0(%r9)
-#ifdef CONFIG_64BIT
epsw %r6,%r7 # set current addressing mode
nill %r6,0x1 # in new psw (31 or 64 bit mode)
nilh %r7,0x8000
stm %r6,%r7,0(%r8)
-#endif
lhi %r6,0x0200 # cr mask for ext int (cr0.54)
ltr %r2,%r2
jz .LsetctS1
@@ -92,10 +88,8 @@
.long 0, 0, 0, 0 # old ext int PSW
.LextpswS1:
.long 0x00080000, 0x80000000+.LwaitS1 # PSW to handle ext int
-#ifdef CONFIG_64BIT
.LextpswS1_64:
.quad 0, .LwaitS1 # PSW to handle ext int, 64 bit
-#endif
.LwaitpswS1:
.long 0x010a0000, 0x00000000+.LloopS1 # PSW to wait for ext int
.LtimeS1:
@@ -272,13 +266,11 @@
ENTRY(_sclp_print_early)
stm %r6,%r15,24(%r15) # save registers
ahi %r15,-96 # create stack frame
-#ifdef CONFIG_64BIT
tm LC_AR_MODE_ID,1
jno .Lesa2
ahi %r15,-80
stmh %r6,%r15,96(%r15) # store upper register halves
.Lesa2:
-#endif
lr %r10,%r2 # save string pointer
lhi %r2,0
bras %r14,_sclp_setup # enable console
@@ -291,14 +283,12 @@
lhi %r2,1
bras %r14,_sclp_setup # disable console
.LendS5:
-#ifdef CONFIG_64BIT
tm LC_AR_MODE_ID,1
jno .Lesa3
lgfr %r2,%r2 # sign extend return value
lmh %r6,%r15,96(%r15) # restore upper register halves
ahi %r15,80
.Lesa3:
-#endif
lm %r6,%r15,120(%r15) # restore registers
br %r14
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index a5ea8bc..7262fe4 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -92,10 +92,8 @@
struct page *vmemmap;
EXPORT_SYMBOL(vmemmap);
-#ifdef CONFIG_64BIT
unsigned long MODULES_VADDR;
unsigned long MODULES_END;
-#endif
/* An array with a pointer to the lowcore of every CPU. */
struct _lowcore *lowcore_ptr[NR_CPUS];
@@ -334,19 +332,10 @@
lc->stfl_fac_list = S390_lowcore.stfl_fac_list;
memcpy(lc->stfle_fac_list, S390_lowcore.stfle_fac_list,
MAX_FACILITY_BIT/8);
-#ifndef CONFIG_64BIT
- if (MACHINE_HAS_IEEE) {
- lc->extended_save_area_addr = (__u32)
- __alloc_bootmem_low(PAGE_SIZE, PAGE_SIZE, 0);
- /* enable extended save area */
- __ctl_set_bit(14, 29);
- }
-#else
if (MACHINE_HAS_VX)
lc->vector_save_area_addr =
(unsigned long) &lc->vector_save_area;
lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
-#endif
lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
lc->async_enter_timer = S390_lowcore.async_enter_timer;
lc->exit_timer = S390_lowcore.exit_timer;
@@ -450,7 +439,6 @@
unsigned long vmax, vmalloc_size, tmp;
/* Choose kernel address space layout: 2, 3, or 4 levels. */
-#ifdef CONFIG_64BIT
vmalloc_size = VMALLOC_END ?: (128UL << 30) - MODULES_LEN;
tmp = (memory_end ?: max_physmem_end) / PAGE_SIZE;
tmp = tmp * (sizeof(struct page) + PAGE_SIZE);
@@ -462,12 +450,6 @@
MODULES_END = vmax;
MODULES_VADDR = MODULES_END - MODULES_LEN;
VMALLOC_END = MODULES_VADDR;
-#else
- vmalloc_size = VMALLOC_END ?: 96UL << 20;
- vmax = 1UL << 31; /* 2-level kernel page table */
- /* vmalloc area is at the end of the kernel address space. */
- VMALLOC_END = vmax;
-#endif
VMALLOC_START = vmax - vmalloc_size;
/* Split remaining virtual space between 1:1 mapping & vmemmap array */
@@ -754,7 +736,6 @@
if (MACHINE_HAS_HPAGE)
elf_hwcap |= HWCAP_S390_HPAGE;
-#if defined(CONFIG_64BIT)
/*
* 64-bit register support for 31-bit processes
* HWCAP_S390_HIGH_GPRS is bit 9.
@@ -772,22 +753,15 @@
*/
if (test_facility(129))
elf_hwcap |= HWCAP_S390_VXRS;
-#endif
-
get_cpu_id(&cpu_id);
add_device_randomness(&cpu_id, sizeof(cpu_id));
switch (cpu_id.machine) {
case 0x9672:
-#if !defined(CONFIG_64BIT)
- default: /* Use "g5" as default for 31 bit kernels. */
-#endif
strcpy(elf_platform, "g5");
break;
case 0x2064:
case 0x2066:
-#if defined(CONFIG_64BIT)
default: /* Use "z900" as default for 64 bit kernels. */
-#endif
strcpy(elf_platform, "z900");
break;
case 0x2084:
@@ -839,19 +813,6 @@
/*
* print what head.S has found out about the machine
*/
-#ifndef CONFIG_64BIT
- if (MACHINE_IS_VM)
- pr_info("Linux is running as a z/VM "
- "guest operating system in 31-bit mode\n");
- else if (MACHINE_IS_LPAR)
- pr_info("Linux is running natively in 31-bit mode\n");
- if (MACHINE_HAS_IEEE)
- pr_info("The hardware system has IEEE compatible "
- "floating point units\n");
- else
- pr_info("The hardware system has no IEEE compatible "
- "floating point units\n");
-#else /* CONFIG_64BIT */
if (MACHINE_IS_VM)
pr_info("Linux is running as a z/VM "
"guest operating system in 64-bit mode\n");
@@ -859,7 +820,6 @@
pr_info("Linux is running under KVM in 64-bit mode\n");
else if (MACHINE_IS_LPAR)
pr_info("Linux is running natively in 64-bit mode\n");
-#endif /* CONFIG_64BIT */
/* Have one command line that is parsed and saved in /proc/cmdline */
/* boot_command_line has been already set up in early.c */
@@ -930,35 +890,3 @@
/* Add system specific data to the random pool */
setup_randomness();
}
-
-#ifdef CONFIG_32BIT
-static int no_removal_warning __initdata;
-
-static int __init parse_no_removal_warning(char *str)
-{
- no_removal_warning = 1;
- return 0;
-}
-__setup("no_removal_warning", parse_no_removal_warning);
-
-static int __init removal_warning(void)
-{
- if (no_removal_warning)
- return 0;
- printk(KERN_ALERT "\n\n");
- printk(KERN_CONT "Warning - you are using a 31 bit kernel!\n\n");
- printk(KERN_CONT "We plan to remove 31 bit kernel support from the kernel sources in March 2015.\n");
- printk(KERN_CONT "Currently we assume that nobody is using the 31 bit kernel on old 31 bit\n");
- printk(KERN_CONT "hardware anymore. If you think that the code should not be removed and also\n");
- printk(KERN_CONT "future versions of the Linux kernel should be able to run in 31 bit mode\n");
- printk(KERN_CONT "please let us know. Please write to:\n");
- printk(KERN_CONT "linux390@de.ibm.com (mail address) and/or\n");
- printk(KERN_CONT "linux-s390@vger.kernel.org (mailing list).\n\n");
- printk(KERN_CONT "Thank you!\n\n");
- printk(KERN_CONT "If this kernel runs on a 64 bit machine you may consider using a 64 bit kernel.\n");
- printk(KERN_CONT "This message can be disabled with the \"no_removal_warning\" kernel parameter.\n");
- schedule_timeout_uninterruptible(300 * HZ);
- return 0;
-}
-early_initcall(removal_warning);
-#endif
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index b3ae6f7..7fec60c 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -106,7 +106,6 @@
{
save_access_regs(current->thread.acrs);
save_fp_ctl(¤t->thread.fp_regs.fpc);
-#ifdef CONFIG_64BIT
if (current->thread.vxrs) {
int i;
@@ -115,7 +114,6 @@
current->thread.fp_regs.fprs[i] =
*(freg_t *)(current->thread.vxrs + i);
} else
-#endif
save_fp_regs(current->thread.fp_regs.fprs);
}
@@ -124,7 +122,6 @@
{
restore_access_regs(current->thread.acrs);
/* restore_fp_ctl is done in restore_sigregs */
-#ifdef CONFIG_64BIT
if (current->thread.vxrs) {
int i;
@@ -133,7 +130,6 @@
current->thread.fp_regs.fprs[i];
restore_vx_regs(current->thread.vxrs);
} else
-#endif
restore_fp_regs(current->thread.fp_regs.fprs);
}
@@ -200,7 +196,6 @@
static int save_sigregs_ext(struct pt_regs *regs,
_sigregs_ext __user *sregs_ext)
{
-#ifdef CONFIG_64BIT
__u64 vxrs[__NUM_VXRS_LOW];
int i;
@@ -215,14 +210,12 @@
sizeof(sregs_ext->vxrs_high)))
return -EFAULT;
}
-#endif
return 0;
}
static int restore_sigregs_ext(struct pt_regs *regs,
_sigregs_ext __user *sregs_ext)
{
-#ifdef CONFIG_64BIT
__u64 vxrs[__NUM_VXRS_LOW];
int i;
@@ -237,7 +230,6 @@
for (i = 0; i < __NUM_VXRS_LOW; i++)
*((__u64 *)(current->thread.vxrs + i) + 1) = vxrs[i];
}
-#endif
return 0;
}
@@ -416,13 +408,11 @@
* included in the signal frame on a 31-bit system.
*/
uc_flags = 0;
-#ifdef CONFIG_64BIT
if (MACHINE_HAS_VX) {
frame_size += sizeof(_sigregs_ext);
if (current->thread.vxrs)
uc_flags |= UC_VXRS;
}
-#endif
frame = get_sigframe(&ksig->ka, regs, frame_size);
if (frame == (void __user *) -1UL)
return -EFAULT;
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index db8f1115..d140160 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -198,19 +198,11 @@
lc->panic_stack = panic_stack + PANIC_FRAME_OFFSET;
lc->cpu_nr = cpu;
lc->spinlock_lockval = arch_spin_lockval(cpu);
-#ifndef CONFIG_64BIT
- if (MACHINE_HAS_IEEE) {
- lc->extended_save_area_addr = get_zeroed_page(GFP_KERNEL);
- if (!lc->extended_save_area_addr)
- goto out;
- }
-#else
if (MACHINE_HAS_VX)
lc->vector_save_area_addr =
(unsigned long) &lc->vector_save_area;
if (vdso_alloc_per_cpu(lc))
goto out;
-#endif
lowcore_ptr[cpu] = lc;
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, (u32)(unsigned long) lc);
return 0;
@@ -229,16 +221,7 @@
{
pcpu_sigp_retry(pcpu, SIGP_SET_PREFIX, 0);
lowcore_ptr[pcpu - pcpu_devices] = NULL;
-#ifndef CONFIG_64BIT
- if (MACHINE_HAS_IEEE) {
- struct _lowcore *lc = pcpu->lowcore;
-
- free_page((unsigned long) lc->extended_save_area_addr);
- lc->extended_save_area_addr = 0;
- }
-#else
vdso_free_per_cpu(pcpu->lowcore);
-#endif
if (pcpu == &pcpu_devices[0])
return;
free_page(pcpu->lowcore->panic_stack-PANIC_FRAME_OFFSET);
@@ -492,22 +475,6 @@
pcpu_ec_call(pcpu_devices + cpu, ec_call_function_single);
}
-#ifndef CONFIG_64BIT
-/*
- * this function sends a 'purge tlb' signal to another CPU.
- */
-static void smp_ptlb_callback(void *info)
-{
- __tlb_flush_local();
-}
-
-void smp_ptlb_all(void)
-{
- on_each_cpu(smp_ptlb_callback, NULL, 1);
-}
-EXPORT_SYMBOL(smp_ptlb_all);
-#endif /* ! CONFIG_64BIT */
-
/*
* this function sends a 'reschedule' IPI to another CPU.
* it goes straight through and wastes no time serializing
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index 23eb222..f145490 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -76,7 +76,6 @@
return sys_ipc(call, first, second, third, ptr, third);
}
-#ifdef CONFIG_64BIT
SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
{
unsigned int ret;
@@ -90,51 +89,3 @@
return ret;
}
-#endif /* CONFIG_64BIT */
-
-/*
- * Wrapper function for sys_fadvise64/fadvise64_64
- */
-#ifndef CONFIG_64BIT
-
-SYSCALL_DEFINE5(s390_fadvise64, int, fd, u32, offset_high, u32, offset_low,
- size_t, len, int, advice)
-{
- return sys_fadvise64(fd, (u64) offset_high << 32 | offset_low,
- len, advice);
-}
-
-struct fadvise64_64_args {
- int fd;
- long long offset;
- long long len;
- int advice;
-};
-
-SYSCALL_DEFINE1(s390_fadvise64_64, struct fadvise64_64_args __user *, args)
-{
- struct fadvise64_64_args a;
-
- if ( copy_from_user(&a, args, sizeof(a)) )
- return -EFAULT;
- return sys_fadvise64_64(a.fd, a.offset, a.len, a.advice);
-}
-
-/*
- * This is a wrapper to call sys_fallocate(). For 31 bit s390 the last
- * 64 bit argument "len" is split into the upper and lower 32 bits. The
- * system call wrapper in the user space loads the value to %r6/%r7.
- * The code in entry.S keeps the values in %r2 - %r6 where they are and
- * stores %r7 to 96(%r15). But the standard C linkage requires that
- * the whole 64 bit value for len is stored on the stack and doesn't
- * use %r6 at all. So s390_fallocate has to convert the arguments from
- * %r2: fd, %r3: mode, %r4/%r5: offset, %r6/96(%r15)-99(%r15): len
- * to
- * %r2: fd, %r3: mode, %r4/%r5: offset, 96(%r15)-103(%r15): len
- */
-SYSCALL_DEFINE5(s390_fallocate, int, fd, int, mode, loff_t, offset,
- u32, len_high, u32, len_low)
-{
- return sys_fallocate(fd, mode, offset, ((u64)len_high << 32) | len_low);
-}
-#endif
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index f081cf1..8be11c2 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -26,7 +26,6 @@
static inline void __user *get_trap_ip(struct pt_regs *regs)
{
-#ifdef CONFIG_64BIT
unsigned long address;
if (regs->int_code & 0x200)
@@ -35,10 +34,6 @@
address = regs->psw.addr;
return (void __user *)
((address - (regs->int_code >> 16)) & PSW_ADDR_INSN);
-#else
- return (void __user *)
- ((regs->psw.addr - (regs->int_code >> 16)) & PSW_ADDR_INSN);
-#endif
}
static inline void report_user_fault(struct pt_regs *regs, int signr)
@@ -153,11 +148,8 @@
"privileged operation")
DO_ERROR_INFO(special_op_exception, SIGILL, ILL_ILLOPN,
"special operation exception")
-
-#ifdef CONFIG_64BIT
DO_ERROR_INFO(transaction_exception, SIGILL, ILL_ILLOPN,
"transaction constraint exception")
-#endif
static inline void do_fp_trap(struct pt_regs *regs, int fpc)
{
@@ -211,29 +203,6 @@
} else if (*((__u16 *) opcode) == UPROBE_SWBP_INSN) {
is_uprobe_insn = 1;
#endif
-#ifdef CONFIG_MATHEMU
- } else if (opcode[0] == 0xb3) {
- if (get_user(*((__u16 *) (opcode+2)), location+1))
- return;
- signal = math_emu_b3(opcode, regs);
- } else if (opcode[0] == 0xed) {
- if (get_user(*((__u32 *) (opcode+2)),
- (__u32 __user *)(location+1)))
- return;
- signal = math_emu_ed(opcode, regs);
- } else if (*((__u16 *) opcode) == 0xb299) {
- if (get_user(*((__u16 *) (opcode+2)), location+1))
- return;
- signal = math_emu_srnm(opcode, regs);
- } else if (*((__u16 *) opcode) == 0xb29c) {
- if (get_user(*((__u16 *) (opcode+2)), location+1))
- return;
- signal = math_emu_stfpc(opcode, regs);
- } else if (*((__u16 *) opcode) == 0xb29d) {
- if (get_user(*((__u16 *) (opcode+2)), location+1))
- return;
- signal = math_emu_lfpc(opcode, regs);
-#endif
} else
signal = SIGILL;
}
@@ -247,71 +216,14 @@
3, SIGTRAP) != NOTIFY_STOP)
signal = SIGILL;
}
-
-#ifdef CONFIG_MATHEMU
- if (signal == SIGFPE)
- do_fp_trap(regs, current->thread.fp_regs.fpc);
- else if (signal == SIGSEGV)
- do_trap(regs, signal, SEGV_MAPERR, "user address fault");
- else
-#endif
if (signal)
do_trap(regs, signal, ILL_ILLOPC, "illegal operation");
}
NOKPROBE_SYMBOL(illegal_op);
-#ifdef CONFIG_MATHEMU
-void specification_exception(struct pt_regs *regs)
-{
- __u8 opcode[6];
- __u16 __user *location = NULL;
- int signal = 0;
-
- location = (__u16 __user *) get_trap_ip(regs);
-
- if (user_mode(regs)) {
- get_user(*((__u16 *) opcode), location);
- switch (opcode[0]) {
- case 0x28: /* LDR Rx,Ry */
- signal = math_emu_ldr(opcode);
- break;
- case 0x38: /* LER Rx,Ry */
- signal = math_emu_ler(opcode);
- break;
- case 0x60: /* STD R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_std(opcode, regs);
- break;
- case 0x68: /* LD R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_ld(opcode, regs);
- break;
- case 0x70: /* STE R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_ste(opcode, regs);
- break;
- case 0x78: /* LE R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_le(opcode, regs);
- break;
- default:
- signal = SIGILL;
- break;
- }
- } else
- signal = SIGILL;
-
- if (signal == SIGFPE)
- do_fp_trap(regs, current->thread.fp_regs.fpc);
- else if (signal)
- do_trap(regs, signal, ILL_ILLOPN, "specification exception");
-}
-#else
DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
"specification exception");
-#endif
-#ifdef CONFIG_64BIT
int alloc_vector_registers(struct task_struct *tsk)
{
__vector128 *vxrs;
@@ -377,7 +289,6 @@
return 1;
}
__setup("novx", disable_vector_extension);
-#endif
void data_exception(struct pt_regs *regs)
{
@@ -386,65 +297,7 @@
location = get_trap_ip(regs);
- if (MACHINE_HAS_IEEE)
- asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
-
-#ifdef CONFIG_MATHEMU
- else if (user_mode(regs)) {
- __u8 opcode[6];
- get_user(*((__u16 *) opcode), location);
- switch (opcode[0]) {
- case 0x28: /* LDR Rx,Ry */
- signal = math_emu_ldr(opcode);
- break;
- case 0x38: /* LER Rx,Ry */
- signal = math_emu_ler(opcode);
- break;
- case 0x60: /* STD R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_std(opcode, regs);
- break;
- case 0x68: /* LD R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_ld(opcode, regs);
- break;
- case 0x70: /* STE R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_ste(opcode, regs);
- break;
- case 0x78: /* LE R,D(X,B) */
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_le(opcode, regs);
- break;
- case 0xb3:
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_b3(opcode, regs);
- break;
- case 0xed:
- get_user(*((__u32 *) (opcode+2)),
- (__u32 __user *)(location+1));
- signal = math_emu_ed(opcode, regs);
- break;
- case 0xb2:
- if (opcode[1] == 0x99) {
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_srnm(opcode, regs);
- } else if (opcode[1] == 0x9c) {
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_stfpc(opcode, regs);
- } else if (opcode[1] == 0x9d) {
- get_user(*((__u16 *) (opcode+2)), location+1);
- signal = math_emu_lfpc(opcode, regs);
- } else
- signal = SIGILL;
- break;
- default:
- signal = SIGILL;
- break;
- }
- }
-#endif
-#ifdef CONFIG_64BIT
+ asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
/* Check for vector register enablement */
if (MACHINE_HAS_VX && !current->thread.vxrs &&
(current->thread.fp_regs.fpc & FPC_DXC_MASK) == 0xfe00) {
@@ -454,13 +307,11 @@
clear_pt_regs_flag(regs, PIF_PER_TRAP);
return;
}
-#endif
-
if (current->thread.fp_regs.fpc & FPC_DXC_MASK)
signal = SIGFPE;
else
signal = SIGILL;
- if (signal == SIGFPE)
+ if (signal == SIGFPE)
do_fp_trap(regs, current->thread.fp_regs.fpc);
else if (signal)
do_trap(regs, signal, ILL_ILLOPN, "data exception");
diff --git a/arch/s390/kernel/vdso.c b/arch/s390/kernel/vdso.c
index 0bbb7e0..0d58269 100644
--- a/arch/s390/kernel/vdso.c
+++ b/arch/s390/kernel/vdso.c
@@ -32,19 +32,17 @@
#include <asm/vdso.h>
#include <asm/facility.h>
-#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT)
+#ifdef CONFIG_COMPAT
extern char vdso32_start, vdso32_end;
static void *vdso32_kbase = &vdso32_start;
static unsigned int vdso32_pages;
static struct page **vdso32_pagelist;
#endif
-#ifdef CONFIG_64BIT
extern char vdso64_start, vdso64_end;
static void *vdso64_kbase = &vdso64_start;
static unsigned int vdso64_pages;
static struct page **vdso64_pagelist;
-#endif /* CONFIG_64BIT */
/*
* Should the kernel map a VDSO page into processes and pass its
@@ -87,7 +85,6 @@
vd->ectg_available = test_facility(31);
}
-#ifdef CONFIG_64BIT
/*
* Allocate/free per cpu vdso data.
*/
@@ -169,7 +166,6 @@
cr5 = offsetof(struct _lowcore, paste);
__ctl_load(cr5, 5, 5);
}
-#endif /* CONFIG_64BIT */
/*
* This is called from binfmt_elf, we create the special vma for the
@@ -191,7 +187,6 @@
if (!uses_interp)
return 0;
-#ifdef CONFIG_64BIT
vdso_pagelist = vdso64_pagelist;
vdso_pages = vdso64_pages;
#ifdef CONFIG_COMPAT
@@ -200,11 +195,6 @@
vdso_pages = vdso32_pages;
}
#endif
-#else
- vdso_pagelist = vdso32_pagelist;
- vdso_pages = vdso32_pages;
-#endif
-
/*
* vDSO has a problem and was disabled, just don't "enable" it for
* the process
@@ -268,7 +258,7 @@
if (!vdso_enabled)
return 0;
vdso_init_data(vdso_data);
-#if defined(CONFIG_32BIT) || defined(CONFIG_COMPAT)
+#ifdef CONFIG_COMPAT
/* Calculate the size of the 32 bit vDSO */
vdso32_pages = ((&vdso32_end - &vdso32_start
+ PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
@@ -287,7 +277,6 @@
vdso32_pagelist[vdso32_pages] = NULL;
#endif
-#ifdef CONFIG_64BIT
/* Calculate the size of the 64 bit vDSO */
vdso64_pages = ((&vdso64_end - &vdso64_start
+ PAGE_SIZE - 1) >> PAGE_SHIFT) + 1;
@@ -307,7 +296,6 @@
if (vdso_alloc_per_cpu(&S390_lowcore))
BUG();
vdso_init_cr5();
-#endif /* CONFIG_64BIT */
get_page(virt_to_page(vdso_data));
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 35b13ed..445657f 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -6,17 +6,10 @@
#include <asm/page.h>
#include <asm-generic/vmlinux.lds.h>
-#ifndef CONFIG_64BIT
-OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390")
-OUTPUT_ARCH(s390:31-bit)
-ENTRY(startup)
-jiffies = jiffies_64 + 4;
-#else
OUTPUT_FORMAT("elf64-s390", "elf64-s390", "elf64-s390")
OUTPUT_ARCH(s390:64-bit)
ENTRY(startup)
jiffies = jiffies_64;
-#endif
PHDRS {
text PT_LOAD FLAGS(5); /* R_E */
