diff options
Diffstat (limited to 'arch/s390/kernel')
28 files changed, 60 insertions, 2102 deletions
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_dumpstack.o += -fno-optimize-sibling-calls # 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_FUNCTION_TRACER) += mcount.o ftrace.o 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 @@ int main(void) 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 @@ int main(void) 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 f74a53d..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 @@ ENTRY(diag308_reset) .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 @@ static int diag8_noresponse(int cmdlen) 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 @@ static int diag8_response(int cmdlen, char *response, int *rlen) 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 diag14(unsigned long rx, unsigned long ry1, unsigned long subcode) 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 @@ int diag210(struct diag210 *addr) spin_lock_irqsave(&diag210_lock, flags); diag210_tmp = *addr; -#ifdef CONFIG_64BIT asm volatile( " lhi %0,-1\n" " sam31\n" @@ -62,16 +57,6 @@ int diag210(struct diag210 *addr) "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 char *long_insn_name[] = { }; 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[] = { }; 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_01[] = { }; 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 @@ static struct s390_insn opcode_a5[] = { { "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 @@ static struct s390_insn opcode_a7[] = { { "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_a7[] = { }; 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 @@ static struct s390_insn opcode_b2[] = { { "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_b2[] = { }; 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 @@ static struct s390_insn opcode_b3[] = { { "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_b3[] = { }; 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 @@ static struct s390_insn opcode_b9[] = { { "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_b9[] = { }; 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 @@ static struct s390_insn opcode_c0[] = { { "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_c0[] = { }; 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 @@ static struct s390_insn opcode_c2[] = { { "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 @@ static struct s390_insn opcode_c4[] = { { "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 @@ static struct s390_insn opcode_c6[] = { { "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 @@ static struct s390_insn opcode_e3[] = { { "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_e3[] = { }; 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 @@ static struct s390_insn opcode_e5[] = { { { 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_e5[] = { }; 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 @@ static struct s390_insn opcode_e7[] = { { "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 @@ static struct s390_insn opcode_eb[] = { { "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_eb[] = { }; 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 @@ static struct s390_insn opcode_ec[] = { { "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 @@ static struct s390_insn opcode_ed[] = { { "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 @@ void show_code(struct pt_regs *regs) 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 @@ void show_stack(struct task_struct *task, unsigned long *sp) 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 @@ void show_stack(struct task_struct *task, unsigned long *sp) 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 @@ void show_registers(struct pt_regs *regs) 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 @@ asm( " .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 @@ asm( " 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 noinline __init void detect_machine_type(void) static __init void setup_topology(void) { -#ifdef CONFIG_64BIT int max_mnest; if (!test_facility(11)) @@ -251,7 +242,6 @@ static __init void setup_topology(void) break; } topology_max_mnest = max_mnest; -#endif } static void early_pgm_check_handler(void) @@ -290,58 +280,6 @@ static noinline __init void setup_facility_list(void) 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_diag9c(void) static __init void detect_diag44(void) { -#ifdef CONFIG_64BIT int rc; asm volatile( @@ -371,12 +308,10 @@ static __init void detect_diag44(void) : "=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 @@ static __init void detect_machine_facilities(void) 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 @@ void __init startup_init(void) 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 @@ __HEAD # 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 @@ __HEAD .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 @@ __HEAD .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) 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 @@ ENTRY(startup_kdump) .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 @@ ENTRY(startup_kdump) 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 @@ ENTRY(startup_kdump) # 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 @@ ENTRY(startup_kdump) #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 085a95e..d05950f 100644 --- a/arch/s390/kernel/head_kdump.S +++ b/arch/s390/kernel/head_kdump.S @@ -92,17 +92,9 @@ startup_kdump_relocated: #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..c57951f 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -2062,12 +2062,10 @@ static void do_reset_calls(void) { 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 @@ void *module_alloc(unsigned long size) 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 @@ static int apply_rela(Elf_Rela *rela, Elf_Addr base, Elf_Sym *symtab, 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 @@ static int notrace s390_revalidate_registers(struct mci *mci) */ 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 @@ static int notrace s390_revalidate_registers(struct mci *mci) 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 @@ static int notrace s390_revalidate_registers(struct mci *mci) */ 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 @@ static int notrace s390_revalidate_registers(struct mci *mci) " 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 @@ void notrace s390_do_machine_check(struct pt_regs *regs) 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_DEFAULT /* 14 */ 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 /* 34 */ 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 @@ void release_thread(struct task_struct *dead_task) { } -#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 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp, 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 @@ int copy_thread(unsigned long clone_flags, unsigned long new_stackp, 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 @@ asmlinkage void execve_tail(void) */ 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 @@ void update_cr_regs(struct task_struct *task) 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 @@ void update_cr_regs(struct task_struct *task) __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 @@ void update_cr_regs(struct task_struct *task) 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 @@ void ptrace_disable(struct task_struct *task) 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 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) * 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 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) 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 @@ static unsigned long __peek_user(struct task_struct *child, addr_t addr) * 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 @@ peek_user(struct task_struct *child, addr_t addr, addr_t data) * 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 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) * 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 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) 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 @@ static int __poke_user(struct task_struct *child, addr_t addr, addr_t data) * 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 @@ static int poke_user(struct task_struct *child, addr_t addr, addr_t data) * 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 @@ static u32 __peek_user_compat(struct task_struct *child, addr_t addr) * 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 @@ static int __poke_user_compat(struct task_struct *child, * 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 @@ static int s390_fpregs_get(struct task_struct *target, 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 @@ static int s390_fpregs_set(struct task_struct *target, 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 @@ static int s390_vxrs_high_set(struct task_struct *target, 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 @@ static const struct user_regset s390_regsets[] = { .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 @@ static const struct user_regset s390_regsets[] = { .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 @@ _sclp_wait_int: 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 @@ _sclp_wait_int: .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 @@ _sclp_print: 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 @@ ENTRY(_sclp_print_early) 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 @@ EXPORT_SYMBOL(VMALLOC_END); 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 @@ static void __init setup_lowcore(void) 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 @@ static void __init setup_memory_end(void) 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 @@ static void __init setup_memory_end(void) 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 @@ static void __init setup_hwcaps(void) 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 @@ static void __init setup_hwcaps(void) */ 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 @@ void __init setup_arch(char **cmdline_p) /* * 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 @@ void __init setup_arch(char **cmdline_p) 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 @@ void __init setup_arch(char **cmdline_p) /* 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 @@ static void store_sigregs(void) { 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 @@ static void store_sigregs(void) 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 @@ static void load_sigregs(void) { 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 @@ static void load_sigregs(void) 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 restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs) 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 @@ static int save_sigregs_ext(struct pt_regs *regs, 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 @@ static int restore_sigregs_ext(struct pt_regs *regs, for (i = 0; i < __NUM_VXRS_LOW; i++) *((__u64 *)(current->thread.vxrs + i) + 1) = vxrs[i]; } -#endif return 0; } @@ -416,13 +408,11 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set, * 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 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu) 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 @@ static void pcpu_free_lowcore(struct pcpu *pcpu) { 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 @@ void arch_send_call_function_single_ipi(int cpu) 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 @@ SYSCALL_DEFINE5(s390_ipc, uint, call, int, first, unsigned long, second, 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 @@ SYSCALL_DEFINE1(s390_personality, unsigned int, personality) 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 @@ int show_unhandled_signals = 1; 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 @@ static inline void __user *get_trap_ip(struct pt_regs *regs) 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 @@ DO_ERROR_INFO(privileged_op, SIGILL, ILL_PRVOPC, "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 @@ void illegal_op(struct pt_regs *regs) } 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 @@ void illegal_op(struct pt_regs *regs) 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 @@ static int __init disable_vector_extension(char *str) return 1; } __setup("novx", disable_vector_extension); -#endif void data_exception(struct pt_regs *regs) { @@ -386,65 +297,7 @@ void data_exception(struct pt_regs *regs) 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 @@ void data_exception(struct pt_regs *regs) 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 @@ static void vdso_init_data(struct vdso_data *vd) vd->ectg_available = test_facility(31); } -#ifdef CONFIG_64BIT /* * Allocate/free per cpu vdso data. */ @@ -169,7 +166,6 @@ static void vdso_init_cr5(void) 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 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) if (!uses_interp) return 0; -#ifdef CONFIG_64BIT vdso_pagelist = vdso64_pagelist; vdso_pages = vdso64_pages; #ifdef CONFIG_COMPAT @@ -200,11 +195,6 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) 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 @@ static int __init vdso_init(void) 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 @@ static int __init vdso_init(void) 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 @@ static int __init vdso_init(void) 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 */ |
