diff options
Diffstat (limited to 'arch/s390')
26 files changed, 28 insertions, 43 deletions
diff --git a/arch/s390/appldata/appldata_base.c b/arch/s390/appldata/appldata_base.c index 2476ca739c1e..d0f82c995af6 100644 --- a/arch/s390/appldata/appldata_base.c +++ b/arch/s390/appldata/appldata_base.c @@ -10,7 +10,6 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> diff --git a/arch/s390/appldata/appldata_mem.c b/arch/s390/appldata/appldata_mem.c index 4811e2dac864..ab3b0765a64e 100644 --- a/arch/s390/appldata/appldata_mem.c +++ b/arch/s390/appldata/appldata_mem.c @@ -9,7 +9,6 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> diff --git a/arch/s390/appldata/appldata_net_sum.c b/arch/s390/appldata/appldata_net_sum.c index 39b7bdecbf05..075e619bf37d 100644 --- a/arch/s390/appldata/appldata_net_sum.c +++ b/arch/s390/appldata/appldata_net_sum.c @@ -10,7 +10,6 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c index f2b44a2f1dec..161acc5c8a1b 100644 --- a/arch/s390/appldata/appldata_os.c +++ b/arch/s390/appldata/appldata_os.c @@ -9,7 +9,6 @@ * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com> */ -#include <linux/config.h> #include <linux/module.h> #include <linux/init.h> #include <linux/slab.h> diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index 3f7018e9dbe4..ec514fe5ccd0 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -4,7 +4,6 @@ * and format the required data. */ -#include <linux/config.h> #include <linux/sched.h> /* Use marker if you need to separate the values later */ diff --git a/arch/s390/kernel/binfmt_elf32.c b/arch/s390/kernel/binfmt_elf32.c index 12a6311e9838..9565a2dcfadc 100644 --- a/arch/s390/kernel/binfmt_elf32.c +++ b/arch/s390/kernel/binfmt_elf32.c @@ -135,7 +135,6 @@ static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs) #include <asm/processor.h> #include <linux/module.h> -#include <linux/config.h> #include <linux/elfcore.h> #include <linux/binfmts.h> #include <linux/compat.h> diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 5e14de37c17b..cabb4ff54cd7 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -16,7 +16,6 @@ */ -#include <linux/config.h> #include <linux/kernel.h> #include <linux/sched.h> #include <linux/fs.h> diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h index 3898f66d0b2f..1a18e29668ef 100644 --- a/arch/s390/kernel/compat_linux.h +++ b/arch/s390/kernel/compat_linux.h @@ -1,7 +1,6 @@ #ifndef _ASM_S390X_S390_H #define _ASM_S390X_S390_H -#include <linux/config.h> #include <linux/compat.h> #include <linux/socket.h> #include <linux/syscalls.h> diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index b4c815d8ef75..d49b876a83bf 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -10,7 +10,6 @@ * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson */ -#include <linux/config.h> #include <linux/compat.h> #include <linux/sched.h> #include <linux/mm.h> diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index 06a3fbc12536..7ba20922a535 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -10,7 +10,6 @@ * Bugreports to: <Linux390@de.ibm.com> */ -#include <linux/config.h> #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/errno.h> diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index aa8b52c2140f..d8948c342caf 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -11,7 +11,6 @@ #include <linux/sys.h> #include <linux/linkage.h> -#include <linux/config.h> #include <asm/cache.h> #include <asm/lowcore.h> #include <asm/errno.h> @@ -229,8 +228,9 @@ sysc_do_svc: sysc_nr_ok: mvc SP_ARGS(4,%r15),SP_R7(%r15) sysc_do_restart: + l %r8,BASED(.Lsysc_table) tm __TI_flags+3(%r9),(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT) - l %r8,sys_call_table-system_call(%r7,%r13) # get system call addr. + l %r8,0(%r7,%r8) # get system call addr. bnz BASED(sysc_tracesys) basr %r14,%r8 # call sys_xxxx st %r2,SP_R2(%r15) # store return value (change R2 on stack) @@ -331,9 +331,10 @@ sysc_tracesys: basr %r14,%r1 clc SP_R2(4,%r15),BASED(.Lnr_syscalls) bnl BASED(sysc_tracenogo) + l %r8,BASED(.Lsysc_table) l %r7,SP_R2(%r15) # strace might have changed the sll %r7,2 # system call - l %r8,sys_call_table-system_call(%r7,%r13) + l %r8,0(%r7,%r8) sysc_tracego: lm %r3,%r6,SP_R3(%r15) l %r2,SP_ORIG_R2(%r15) @@ -1010,6 +1011,7 @@ cleanup_io_leave_insn: .Ltrace: .long syscall_trace .Lvfork: .long sys_vfork .Lschedtail: .long schedule_tail +.Lsysc_table: .long sys_call_table .Lcritical_start: .long __critical_start + 0x80000000 @@ -1018,8 +1020,8 @@ cleanup_io_leave_insn: .Lcleanup_critical: .long cleanup_critical + .section .rodata, "a" #define SYSCALL(esa,esame,emu) .long esa sys_call_table: #include "syscalls.S" #undef SYSCALL - diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index f3222a1b2861..1ca499fa54b4 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -11,7 +11,6 @@ #include <linux/sys.h> #include <linux/linkage.h> -#include <linux/config.h> #include <asm/cache.h> #include <asm/lowcore.h> #include <asm/errno.h> @@ -992,6 +991,7 @@ cleanup_io_leave_insn: .Lcritical_end: .quad __critical_end + .section .rodata, "a" #define SYSCALL(esa,esame,emu) .long esame sys_call_table: #include "syscalls.S" diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 538c82da49b1..adad8863ee2f 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -23,7 +23,6 @@ * */ -#include <linux/config.h> #include <asm/setup.h> #include <asm/lowcore.h> #include <asm/asm-offsets.h> diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 4a0f5a1551ea..1f9399191794 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -15,7 +15,6 @@ * This file handles the architecture-dependent parts of process handling.. */ -#include <linux/config.h> #include <linux/compiler.h> #include <linux/cpu.h> #include <linux/errno.h> diff --git a/arch/s390/kernel/s390_ksyms.c b/arch/s390/kernel/s390_ksyms.c index 0886e739d122..c73a45467fa4 100644 --- a/arch/s390/kernel/s390_ksyms.c +++ b/arch/s390/kernel/s390_ksyms.c @@ -3,7 +3,6 @@ * * S390 version */ -#include <linux/config.h> #include <linux/highuid.h> #include <linux/module.h> #include <linux/mm.h> diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 2b2551e3510b..1ca34f54ea8a 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -28,7 +28,6 @@ #include <linux/tty.h> #include <linux/ioport.h> #include <linux/delay.h> -#include <linux/config.h> #include <linux/init.h> #include <linux/initrd.h> #include <linux/bootmem.h> diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index d48cfc726b68..a887b686f279 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -11,7 +11,6 @@ * 1997-11-28 Modified for POSIX.1b signals by Richard Henderson */ -#include <linux/config.h> #include <linux/sched.h> #include <linux/mm.h> #include <linux/smp.h> diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 2a6c6efb6865..f7fe9bc43397 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -12,7 +12,6 @@ * Copyright (C) 1991, 1992, 1995 Linus Torvalds */ -#include <linux/config.h> #include <linux/errno.h> #include <linux/module.h> #include <linux/sched.h> diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index b7630436f693..12240c03a6dd 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -14,7 +14,6 @@ * 'Traps.c' handles hardware traps and faults after we have saved some * state in 'asm.s'. */ -#include <linux/config.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/string.h> diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 9f34bb54c051..ff5f7bb34f75 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -3,7 +3,6 @@ */ #include <asm-generic/vmlinux.lds.h> -#include <linux/config.h> #ifndef CONFIG_64BIT OUTPUT_FORMAT("elf32-s390", "elf32-s390", "elf32-s390") diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 1f0439dc245a..2306cd83fca1 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -7,7 +7,6 @@ * Author(s): Jan Glauber <jan.glauber@de.ibm.com> */ -#include <linux/config.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/time.h> diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c index 71f0a2fb3078..468f4ea33f99 100644 --- a/arch/s390/lib/delay.c +++ b/arch/s390/lib/delay.c @@ -11,7 +11,6 @@ * Copyright (C) 1997 Martin Mares <mj@atrey.karlin.mff.cuni.cz> */ -#include <linux/config.h> #include <linux/sched.h> #include <linux/delay.h> diff --git a/arch/s390/math-emu/math.c b/arch/s390/math-emu/math.c index 648df7140335..b4957c84e4d6 100644 --- a/arch/s390/math-emu/math.c +++ b/arch/s390/math-emu/math.c @@ -9,7 +9,6 @@ * that does not have the IEEE fpu (all processors before G5). */ -#include <linux/config.h> #include <linux/types.h> #include <linux/sched.h> #include <linux/mm.h> diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c index 51596f429235..81be2fec7dc5 100644 --- a/arch/s390/mm/cmm.c +++ b/arch/s390/mm/cmm.c @@ -8,7 +8,6 @@ * Collaborative memory management interface. */ -#include <linux/config.h> #include <linux/errno.h> #include <linux/fs.h> #include <linux/init.h> diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c index 81ade401b073..833d5941746a 100644 --- a/arch/s390/mm/fault.c +++ b/arch/s390/mm/fault.c @@ -10,7 +10,6 @@ * Copyright (C) 1995 Linus Torvalds */ -#include <linux/config.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/kernel.h> diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index a055894f3bd8..eb6ebfef134a 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -9,7 +9,6 @@ * Copyright (C) 1995 Linus Torvalds */ -#include <linux/config.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/kernel.h> @@ -24,6 +23,7 @@ #include <linux/init.h> #include <linux/pagemap.h> #include <linux/bootmem.h> +#include <linux/pfn.h> #include <asm/processor.h> #include <asm/system.h> @@ -34,6 +34,7 @@ #include <asm/lowcore.h> #include <asm/tlb.h> #include <asm/tlbflush.h> +#include <asm/sections.h> DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); @@ -90,17 +91,6 @@ void show_mem(void) printk("%d pages swap cached\n",cached); } -/* References to section boundaries */ - -extern unsigned long _text; -extern unsigned long _etext; -extern unsigned long _edata; -extern unsigned long __bss_start; -extern unsigned long _end; - -extern unsigned long __init_begin; -extern unsigned long __init_end; - extern unsigned long __initdata zholes_size[]; /* * paging_init() sets up the page tables @@ -117,6 +107,10 @@ void __init paging_init(void) unsigned long pfn = 0; unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERNSEG_TABLE; static const int ssm_mask = 0x04000000L; + unsigned long ro_start_pfn, ro_end_pfn; + + ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata); + ro_end_pfn = PFN_UP((unsigned long)&__end_rodata); /* unmap whole virtual address space */ @@ -144,7 +138,10 @@ void __init paging_init(void) pg_dir++; for (tmp = 0 ; tmp < PTRS_PER_PTE ; tmp++,pg_table++) { - pte = pfn_pte(pfn, PAGE_KERNEL); + if (pfn >= ro_start_pfn && pfn < ro_end_pfn) + pte = pfn_pte(pfn, __pgprot(_PAGE_RO)); + else + pte = pfn_pte(pfn, PAGE_KERNEL); if (pfn >= max_low_pfn) pte_clear(&init_mm, 0, &pte); set_pte(pg_table, pte); @@ -176,6 +173,7 @@ void __init paging_init(void) } #else /* CONFIG_64BIT */ + void __init paging_init(void) { pgd_t * pg_dir; @@ -187,13 +185,15 @@ void __init paging_init(void) unsigned long pgdir_k = (__pa(swapper_pg_dir) & PAGE_MASK) | _KERN_REGION_TABLE; static const int ssm_mask = 0x04000000L; - unsigned long zones_size[MAX_NR_ZONES]; unsigned long dma_pfn, high_pfn; + unsigned long ro_start_pfn, ro_end_pfn; memset(zones_size, 0, sizeof(zones_size)); dma_pfn = MAX_DMA_ADDRESS >> PAGE_SHIFT; high_pfn = max_low_pfn; + ro_start_pfn = PFN_DOWN((unsigned long)&__start_rodata); + ro_end_pfn = PFN_UP((unsigned long)&__end_rodata); if (dma_pfn > high_pfn) zones_size[ZONE_DMA] = high_pfn; @@ -232,7 +232,10 @@ void __init paging_init(void) pmd_populate_kernel(&init_mm, pm_dir, pt_dir); for (k = 0 ; k < PTRS_PER_PTE ; k++,pt_dir++) { - pte = pfn_pte(pfn, PAGE_KERNEL); + if (pfn >= ro_start_pfn && pfn < ro_end_pfn) + pte = pfn_pte(pfn, __pgprot(_PAGE_RO)); + else + pte = pfn_pte(pfn, PAGE_KERNEL); if (pfn >= max_low_pfn) { pte_clear(&init_mm, 0, &pte); continue; @@ -283,6 +286,9 @@ void __init mem_init(void) reservedpages << (PAGE_SHIFT-10), datasize >>10, initsize >> 10); + printk("Write protected kernel read-only data: %#lx - %#lx\n", + (unsigned long)&__start_rodata, + PFN_ALIGN((unsigned long)&__end_rodata) - 1); } void free_initmem(void) |