From df720ac12fc76d235a1b0d7ebccd14b23085c24e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Fri, 12 Aug 2016 18:47:45 -0400 Subject: exceptions: detritus removal externs and defines for stuff that is never used Signed-off-by: Al Viro --- arch/arm/mm/fault.h | 1 - arch/m68k/include/asm/uaccess_no.h | 3 --- arch/microblaze/include/asm/uaccess.h | 3 --- arch/openrisc/include/asm/uaccess.h | 4 ---- arch/sh/include/asm/uaccess.h | 2 -- arch/x86/mm/fault.c | 2 +- arch/xtensa/include/asm/uaccess.h | 11 ----------- 7 files changed, 1 insertion(+), 25 deletions(-) (limited to 'arch') diff --git a/arch/arm/mm/fault.h b/arch/arm/mm/fault.h index 05ec5e0df32d..67532f242271 100644 --- a/arch/arm/mm/fault.h +++ b/arch/arm/mm/fault.h @@ -23,7 +23,6 @@ static inline int fsr_fs(unsigned int fsr) #endif void do_bad_area(unsigned long addr, unsigned int fsr, struct pt_regs *regs); -unsigned long search_exception_table(unsigned long addr); void early_abt_enable(void); #endif /* __ARCH_ARM_FAULT_H */ diff --git a/arch/m68k/include/asm/uaccess_no.h b/arch/m68k/include/asm/uaccess_no.h index 1bdf15263754..36deeb36503b 100644 --- a/arch/m68k/include/asm/uaccess_no.h +++ b/arch/m68k/include/asm/uaccess_no.h @@ -44,9 +44,6 @@ struct exception_table_entry unsigned long insn, fixup; }; -/* Returns 0 if exception not found and fixup otherwise. */ -extern unsigned long search_exception_table(unsigned long); - /* * These are the main single-value transfer routines. They automatically diff --git a/arch/microblaze/include/asm/uaccess.h b/arch/microblaze/include/asm/uaccess.h index 826676778094..253a67e275ad 100644 --- a/arch/microblaze/include/asm/uaccess.h +++ b/arch/microblaze/include/asm/uaccess.h @@ -71,9 +71,6 @@ struct exception_table_entry { unsigned long insn, fixup; }; -/* Returns 0 if exception not found and fixup otherwise. */ -extern unsigned long search_exception_table(unsigned long); - #ifndef CONFIG_MMU /* Check against bounds of physical memory */ diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index 5cc6b4f1b795..140faa16685a 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -82,10 +82,6 @@ struct exception_table_entry { unsigned long insn, fixup; }; -/* Returns 0 if exception not found and fixup otherwise. */ -extern unsigned long search_exception_table(unsigned long); -extern void sort_exception_table(void); - /* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. diff --git a/arch/sh/include/asm/uaccess.h b/arch/sh/include/asm/uaccess.h index 92ade79ac427..a38d0c7b818f 100644 --- a/arch/sh/include/asm/uaccess.h +++ b/arch/sh/include/asm/uaccess.h @@ -192,8 +192,6 @@ struct exception_table_entry { #endif int fixup_exception(struct pt_regs *regs); -/* Returns 0 if exception not found and fixup.unit otherwise. */ -unsigned long search_exception_table(unsigned long addr); const struct exception_table_entry *search_exception_tables(unsigned long addr); extern void *set_exception_table_vec(unsigned int vec, void *handler); diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index dc8023060456..c0413d5541af 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -5,7 +5,7 @@ */ #include /* test_thread_flag(), ... */ #include /* oops_begin/end, ... */ -#include /* search_exception_table */ +#include /* search_exception_tables */ #include /* max_low_pfn */ #include /* NOKPROBE_SYMBOL, ... */ #include /* kmmio_handler, ... */ diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h index 147b26ed9c91..de72ba558d8d 100644 --- a/arch/xtensa/include/asm/uaccess.h +++ b/arch/xtensa/include/asm/uaccess.h @@ -495,16 +495,5 @@ struct exception_table_entry unsigned long insn, fixup; }; -/* Returns 0 if exception not found and fixup.unit otherwise. */ - -extern unsigned long search_exception_table(unsigned long addr); -extern void sort_exception_table(void); - -/* Returns the new pc */ -#define fixup_exception(map_reg, fixup_unit, pc) \ -({ \ - fixup_unit; \ -}) - #endif /* __ASSEMBLY__ */ #endif /* _XTENSA_UACCESS_H */ -- cgit v1.2.3 From 08435d89dd5890c3e72dbdc0f47e7b06f0012447 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 3 Sep 2016 17:07:08 -0400 Subject: frv: move HAVE_ARCH_UNMAPPED_AREA to pgtable.h it has no business in uaccess.h, everything else has it in pgtable.h and the only user (mm/mmap.c) unconditionally pulls asm/pgtable.h via linux/mm.h. Signed-off-by: Al Viro --- arch/frv/include/asm/pgtable.h | 1 + arch/frv/include/asm/uaccess.h | 2 -- 2 files changed, 1 insertion(+), 2 deletions(-) (limited to 'arch') diff --git a/arch/frv/include/asm/pgtable.h b/arch/frv/include/asm/pgtable.h index 07d7a7ef8bd5..a0513d463a1f 100644 --- a/arch/frv/include/asm/pgtable.h +++ b/arch/frv/include/asm/pgtable.h @@ -522,5 +522,6 @@ extern void __init pgtable_cache_init(void); #ifndef __ASSEMBLY__ extern void __init paging_init(void); #endif /* !__ASSEMBLY__ */ +#define HAVE_ARCH_UNMAPPED_AREA #endif /* _ASM_PGTABLE_H */ diff --git a/arch/frv/include/asm/uaccess.h b/arch/frv/include/asm/uaccess.h index 87d9e34c5df8..c0f4057eab60 100644 --- a/arch/frv/include/asm/uaccess.h +++ b/arch/frv/include/asm/uaccess.h @@ -20,8 +20,6 @@ #include #include -#define HAVE_ARCH_UNMAPPED_AREA /* we decide where to put mmaps */ - #define __ptr(x) ((unsigned long __force *)(x)) #define VERIFY_READ 0 -- cgit v1.2.3 From 81029b1f775ad55caeaa8f7f260273969a4a282e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 3 Sep 2016 18:05:00 -0400 Subject: mn10300: finish verify_area() off Signed-off-by: Al Viro --- arch/mn10300/include/asm/uaccess.h | 6 ------ arch/mn10300/kernel/signal.c | 6 +++--- 2 files changed, 3 insertions(+), 9 deletions(-) (limited to 'arch') diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index d012e877a95a..bd285e5fd93a 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -72,12 +72,6 @@ static inline int ___range_ok(unsigned long addr, unsigned int size) #define access_ok(type, addr, size) (__range_ok((addr), (size)) == 0) #define __access_ok(addr, size) (__range_ok((addr), (size)) == 0) -static inline int verify_area(int type, const void *addr, unsigned long size) -{ - return access_ok(type, addr, size) ? 0 : -EFAULT; -} - - /* * The exception table consists of pairs of addresses: the first is the * address of an instruction that is allowed to fault, and the second is diff --git a/arch/mn10300/kernel/signal.c b/arch/mn10300/kernel/signal.c index dfd0301cf200..cd8cb1d1176b 100644 --- a/arch/mn10300/kernel/signal.c +++ b/arch/mn10300/kernel/signal.c @@ -75,7 +75,7 @@ static int restore_sigcontext(struct pt_regs *regs, struct fpucontext *buf; err |= __get_user(buf, &sc->fpucontext); if (buf) { - if (verify_area(VERIFY_READ, buf, sizeof(*buf))) + if (!access_ok(VERIFY_READ, buf, sizeof(*buf))) goto badframe; err |= fpu_restore_sigcontext(buf); } @@ -98,7 +98,7 @@ asmlinkage long sys_sigreturn(void) long d0; frame = (struct sigframe __user *) current_frame()->sp; - if (verify_area(VERIFY_READ, frame, sizeof(*frame))) + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) goto badframe; if (__get_user(set.sig[0], &frame->sc.oldmask)) goto badframe; @@ -130,7 +130,7 @@ asmlinkage long sys_rt_sigreturn(void) long d0; frame = (struct rt_sigframe __user *) current_frame()->sp; - if (verify_area(VERIFY_READ, frame, sizeof(*frame))) + if (!access_ok(VERIFY_READ, frame, sizeof(*frame))) goto badframe; if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set))) goto badframe; -- cgit v1.2.3 From 93b5097fe5b47d536b560fce14f4def3d1866121 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sat, 3 Sep 2016 18:23:48 -0400 Subject: kill __kernel_ds_p off Signed-off-by: Al Viro --- arch/frv/include/asm/segment.h | 1 - arch/mn10300/include/asm/uaccess.h | 1 - 2 files changed, 2 deletions(-) (limited to 'arch') diff --git a/arch/frv/include/asm/segment.h b/arch/frv/include/asm/segment.h index 4377c89a57f5..2305142d4cf8 100644 --- a/arch/frv/include/asm/segment.h +++ b/arch/frv/include/asm/segment.h @@ -32,7 +32,6 @@ typedef struct { #define get_ds() (KERNEL_DS) #define get_fs() (__current_thread_info->addr_limit) #define segment_eq(a, b) ((a).seg == (b).seg) -#define __kernel_ds_p() segment_eq(get_fs(), KERNEL_DS) #define get_addr_limit() (get_fs().seg) #define set_fs(_x) \ diff --git a/arch/mn10300/include/asm/uaccess.h b/arch/mn10300/include/asm/uaccess.h index bd285e5fd93a..2eedf6f46a57 100644 --- a/arch/mn10300/include/asm/uaccess.h +++ b/arch/mn10300/include/asm/uaccess.h @@ -38,7 +38,6 @@ #define get_ds() (KERNEL_DS) #define get_fs() (current_thread_info()->addr_limit) #define set_fs(x) (current_thread_info()->addr_limit = (x)) -#define __kernel_ds_p() (current_thread_info()->addr_limit.seg == 0x9FFFFFFF) #define segment_eq(a, b) ((a).seg == (b).seg) -- cgit v1.2.3 From 76580237d13fbfcd55acbc8fdd6726be7080a275 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 4 Sep 2016 14:26:36 -0400 Subject: xtensa: split uaccess.h into C and asm sides Signed-off-by: Al Viro --- arch/xtensa/include/asm/asm-uaccess.h | 160 ++++++++++++++++++++++++++++++++++ arch/xtensa/include/asm/uaccess.h | 142 ------------------------------ arch/xtensa/kernel/coprocessor.S | 2 +- arch/xtensa/kernel/entry.S | 2 +- 4 files changed, 162 insertions(+), 144 deletions(-) create mode 100644 arch/xtensa/include/asm/asm-uaccess.h (limited to 'arch') diff --git a/arch/xtensa/include/asm/asm-uaccess.h b/arch/xtensa/include/asm/asm-uaccess.h new file mode 100644 index 000000000000..a7a110039786 --- /dev/null +++ b/arch/xtensa/include/asm/asm-uaccess.h @@ -0,0 +1,160 @@ +/* + * include/asm-xtensa/uaccess.h + * + * User space memory access functions + * + * These routines provide basic accessing functions to the user memory + * space for the kernel. This header file provides functions such as: + * + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2001 - 2005 Tensilica Inc. + */ + +#ifndef _XTENSA_ASM_UACCESS_H +#define _XTENSA_ASM_UACCESS_H + +#include +#include + +#define VERIFY_READ 0 +#define VERIFY_WRITE 1 + +#include +#include +#include + +/* + * These assembly macros mirror the C macros in asm/uaccess.h. They + * should always have identical functionality. See + * arch/xtensa/kernel/sys.S for usage. + */ + +#define KERNEL_DS 0 +#define USER_DS 1 + +#define get_ds (KERNEL_DS) + +/* + * get_fs reads current->thread.current_ds into a register. + * On Entry: + * anything + * stack + * On Exit: + * contains current->thread.current_ds + */ + .macro get_fs ad, sp + GET_CURRENT(\ad,\sp) +#if THREAD_CURRENT_DS > 1020 + addi \ad, \ad, TASK_THREAD + l32i \ad, \ad, THREAD_CURRENT_DS - TASK_THREAD +#else + l32i \ad, \ad, THREAD_CURRENT_DS +#endif + .endm + +/* + * set_fs sets current->thread.current_ds to some value. + * On Entry: + * anything (temp register) + * value to write + * stack + * On Exit: + * destroyed (actually, current) + * preserved, value to write + */ + .macro set_fs at, av, sp + GET_CURRENT(\at,\sp) + s32i \av, \at, THREAD_CURRENT_DS + .endm + +/* + * kernel_ok determines whether we should bypass addr/size checking. + * See the equivalent C-macro version below for clarity. + * On success, kernel_ok branches to a label indicated by parameter + * . This implies that the macro falls through to the next + * insruction on an error. + * + * Note that while this macro can be used independently, we designed + * in for optimal use in the access_ok macro below (i.e., we fall + * through on error). + * + * On Entry: + * anything (temp register) + * label to branch to on success; implies + * fall-through macro on error + * stack pointer + * On Exit: + * destroyed (actually, current->thread.current_ds) + */ + +#if ((KERNEL_DS != 0) || (USER_DS == 0)) +# error Assembly macro kernel_ok fails +#endif + .macro kernel_ok at, sp, success + get_fs \at, \sp + beqz \at, \success + .endm + +/* + * user_ok determines whether the access to user-space memory is allowed. + * See the equivalent C-macro version below for clarity. + * + * On error, user_ok branches to a label indicated by parameter + * . This implies that the macro falls through to the next + * instruction on success. + * + * Note that while this macro can be used independently, we designed + * in for optimal use in the access_ok macro below (i.e., we fall + * through on success). + * + * On Entry: + * register containing memory address + * register containing memory size + * temp register + * label to branch to on error; implies fall-through + * macro on success + * On Exit: + * preserved + * preserved + * destroyed (actually, (TASK_SIZE + 1 - size)) + */ + .macro user_ok aa, as, at, error + movi \at, __XTENSA_UL_CONST(TASK_SIZE) + bgeu \as, \at, \error + sub \at, \at, \as + bgeu \aa, \at, \error + .endm + +/* + * access_ok determines whether a memory access is allowed. See the + * equivalent C-macro version below for clarity. + * + * On error, access_ok branches to a label indicated by parameter + * . This implies that the macro falls through to the next + * instruction on success. + * + * Note that we assume success is the common case, and we optimize the + * branch fall-through case on success. + * + * On Entry: + * register containing memory address + * register containing memory size + * temp register + * + * label to branch to on error; implies fall-through + * macro on success + * On Exit: + * preserved + * preserved + * destroyed + */ + .macro access_ok aa, as, at, sp, error + kernel_ok \at, \sp, .Laccess_ok_\@ + user_ok \aa, \as, \at, \error +.Laccess_ok_\@: + .endm + +#endif /* _XTENSA_ASM_UACCESS_H */ diff --git a/arch/xtensa/include/asm/uaccess.h b/arch/xtensa/include/asm/uaccess.h index de72ba558d8d..848a3d736bcb 100644 --- a/arch/xtensa/include/asm/uaccess.h +++ b/arch/xtensa/include/asm/uaccess.h @@ -17,153 +17,12 @@ #define _XTENSA_UACCESS_H #include -#ifndef __ASSEMBLY__ #include -#endif #include #define VERIFY_READ 0 #define VERIFY_WRITE 1 -#ifdef __ASSEMBLY__ - -#include -#include -#include - -/* - * These assembly macros mirror the C macros that follow below. They - * should always have identical functionality. See - * arch/xtensa/kernel/sys.S for usage. - */ - -#define KERNEL_DS 0 -#define USER_DS 1 - -#define get_ds (KERNEL_DS) - -/* - * get_fs reads current->thread.current_ds into a register. - * On Entry: - * anything - * stack - * On Exit: - * contains current->thread.current_ds - */ - .macro get_fs ad, sp - GET_CURRENT(\ad,\sp) -#if THREAD_CURRENT_DS > 1020 - addi \ad, \ad, TASK_THREAD - l32i \ad, \ad, THREAD_CURRENT_DS - TASK_THREAD -#else - l32i \ad, \ad, THREAD_CURRENT_DS -#endif - .endm - -/* - * set_fs sets current->thread.current_ds to some value. - * On Entry: - * anything (temp register) - * value to write - * stack - * On Exit: - * destroyed (actually, current) - * preserved, value to write - */ - .macro set_fs at, av, sp - GET_CURRENT(\at,\sp) - s32i \av, \at, THREAD_CURRENT_DS - .endm - -/* - * kernel_ok determines whether we should bypass addr/size checking. - * See the equivalent C-macro version below for clarity. - * On success, kernel_ok branches to a label indicated by parameter - * . This implies that the macro falls through to the next - * insruction on an error. - * - * Note that while this macro can be used independently, we designed - * in for optimal use in the access_ok macro below (i.e., we fall - * through on error). - * - * On Entry: - * anything (temp register) - * label to branch to on success; implies - * fall-through macro on error - * stack pointer - * On Exit: - * destroyed (actually, current->thread.current_ds) - */ - -#if ((KERNEL_DS != 0) || (USER_DS == 0)) -# error Assembly macro kernel_ok fails -#endif - .macro kernel_ok at, sp, success - get_fs \at, \sp - beqz \at, \success - .endm - -/* - * user_ok determines whether the access to user-space memory is allowed. - * See the equivalent C-macro version below for clarity. - * - * On error, user_ok branches to a label indicated by parameter - * . This implies that the macro falls through to the next - * instruction on success. - * - * Note that while this macro can be used independently, we designed - * in for optimal use in the access_ok macro below (i.e., we fall - * through on success). - * - * On Entry: - * register containing memory address - * register containing memory size - * temp register - * label to branch to on error; implies fall-through - * macro on success - * On Exit: - * preserved - * preserved - * destroyed (actually, (TASK_SIZE + 1 - size)) - */ - .macro user_ok aa, as, at, error - movi \at, __XTENSA_UL_CONST(TASK_SIZE) - bgeu \as, \at, \error - sub \at, \at, \as - bgeu \aa, \at, \error - .endm - -/* - * access_ok determines whether a memory access is allowed. See the - * equivalent C-macro version below for clarity. - * - * On error, access_ok branches to a label indicated by parameter - * . This implies that the macro falls through to the next - * instruction on success. - * - * Note that we assume success is the common case, and we optimize the - * branch fall-through case on success. - * - * On Entry: - * register containing memory address - * register containing memory size - * temp register - * - * label to branch to on error; implies fall-through - * macro on success - * On Exit: - * preserved - * preserved - * destroyed - */ - .macro access_ok aa, as, at, sp, error - kernel_ok \at, \sp, .Laccess_ok_\@ - user_ok \aa, \as, \at, \error -.Laccess_ok_\@: - .endm - -#else /* __ASSEMBLY__ not defined */ - #include /* @@ -495,5 +354,4 @@ struct exception_table_entry unsigned long insn, fixup; }; -#endif /* __ASSEMBLY__ */ #endif /* _XTENSA_UACCESS_H */ diff --git a/arch/xtensa/kernel/coprocessor.S b/arch/xtensa/kernel/coprocessor.S index a482df5df2b2..6911e384f608 100644 --- a/arch/xtensa/kernel/coprocessor.S +++ b/arch/xtensa/kernel/coprocessor.S @@ -17,7 +17,7 @@ #include #include #include -#include +#include #include #include #include diff --git a/arch/xtensa/kernel/entry.S b/arch/xtensa/kernel/entry.S index fe8f7e7efb9d..a504384b9339 100644 --- a/arch/xtensa/kernel/entry.S +++ b/arch/xtensa/kernel/entry.S @@ -17,7 +17,7 @@ #include #include #include -#include +#include #include #include #include -- cgit v1.2.3 From a31b821d8c189a6e6eee92f6c55989ce722e8089 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Sun, 4 Sep 2016 23:04:32 -0400 Subject: mn10300: remove a bogus processor.h->uaccess.h include The only reason it used to be needed had been a (bogus) use of set_fs() in start_thread() and that got removed in 2011... Signed-off-by: Al Viro --- arch/mn10300/include/asm/processor.h | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/mn10300/include/asm/processor.h b/arch/mn10300/include/asm/processor.h index 769d5ed8e992..b10ba121c849 100644 --- a/arch/mn10300/include/asm/processor.h +++ b/arch/mn10300/include/asm/processor.h @@ -18,7 +18,6 @@ #include #include #include -#include #include /* Forward declaration, a strange C thing */ -- cgit v1.2.3 From b79d8d82bb994fe6154ea1a8e56d587ef9e356ae Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Sep 2016 11:27:55 -0400 Subject: remove stray include of asm/uaccess.h from cacheflush.h It was introduced in "arch, x86: pmem api for ensuring durability of persistent memory updates" in July 2015, along with the code that really used that stuff. Three weeks later all that code got moved to asm/pmem.h by "pmem, x86: move x86 PMEM API to new pmem.h header"; include, however, was left behind. Signed-off-by: Al Viro --- arch/x86/include/asm/cacheflush.h | 1 - 1 file changed, 1 deletion(-) (limited to 'arch') diff --git a/arch/x86/include/asm/cacheflush.h b/arch/x86/include/asm/cacheflush.h index 61518cf79437..872877d930de 100644 --- a/arch/x86/include/asm/cacheflush.h +++ b/arch/x86/include/asm/cacheflush.h @@ -4,7 +4,6 @@ /* Caches aren't brain-dead on the intel. */ #include #include -#include /* * The set_memory_* API can be used to change various attributes of a virtual -- cgit v1.2.3 From 45caf470077ae6b02da6d5eaee94003ee1543ca3 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Sep 2016 11:32:44 -0400 Subject: x86: separate extable.h, switch sections.h to it drivers/platform/x86/dell-smo8800.c is touched due to the following obscenity: drivers/platform/x86/dell-smo8800.c -> linux/interrupt.h -> linux/hardirq.h -> asm/hardirq.h -> linux/irq.h -> asm/hw_irq.h -> asm/sections.h -> asm/uaccess.h is the only chain of includes pulling asm/uaccess.h there. Signed-off-by: Al Viro --- arch/x86/include/asm/extable.h | 35 +++++++++++++++++++++++++++++++++++ arch/x86/include/asm/sections.h | 2 +- arch/x86/include/asm/uaccess.h | 32 +------------------------------- drivers/platform/x86/dell-smo8800.c | 1 + 4 files changed, 38 insertions(+), 32 deletions(-) create mode 100644 arch/x86/include/asm/extable.h (limited to 'arch') diff --git a/arch/x86/include/asm/extable.h b/arch/x86/include/asm/extable.h new file mode 100644 index 000000000000..b8ad261d11dc --- /dev/null +++ b/arch/x86/include/asm/extable.h @@ -0,0 +1,35 @@ +#ifndef _ASM_X86_EXTABLE_H +#define _ASM_X86_EXTABLE_H +/* + * The exception table consists of triples of addresses relative to the + * exception table entry itself. The first address is of an instruction + * that is allowed to fault, the second is the target at which the program + * should continue. The third is a handler function to deal with the fault + * caused by the instruction in the first field. + * + * All the routines below use bits of fixup code that are out of line + * with the main instruction path. This means when everything is well, + * we don't even have to jump over them. Further, they do not intrude + * on our cache or tlb entries. + */ + +struct exception_table_entry { + int insn, fixup, handler; +}; +struct pt_regs; + +#define ARCH_HAS_RELATIVE_EXTABLE + +#define swap_ex_entry_fixup(a, b, tmp, delta) \ + do { \ + (a)->fixup = (b)->fixup + (delta); \ + (b)->fixup = (tmp).fixup - (delta); \ + (a)->handler = (b)->handler + (delta); \ + (b)->handler = (tmp).handler - (delta); \ + } while (0) + +extern int fixup_exception(struct pt_regs *regs, int trapnr); +extern bool ex_has_fault_handler(unsigned long ip); +extern void early_fixup_exception(struct pt_regs *regs, int trapnr); + +#endif diff --git a/arch/x86/include/asm/sections.h b/arch/x86/include/asm/sections.h index 13b6cdd0af57..2f75f30cb2f6 100644 --- a/arch/x86/include/asm/sections.h +++ b/arch/x86/include/asm/sections.h @@ -2,7 +2,7 @@ #define _ASM_X86_SECTIONS_H #include -#include +#include extern char __brk_base[], __brk_limit[]; extern struct exception_table_entry __stop___ex_table[]; diff --git a/arch/x86/include/asm/uaccess.h b/arch/x86/include/asm/uaccess.h index 2131c4ce7d8a..faf3687f1035 100644 --- a/arch/x86/include/asm/uaccess.h +++ b/arch/x86/include/asm/uaccess.h @@ -11,6 +11,7 @@ #include #include #include +#include #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -90,37 +91,6 @@ static inline bool __chk_range_not_ok(unsigned long addr, unsigned long size, un #define access_ok(type, addr, size) \ likely(!__range_not_ok(addr, size, user_addr_max())) -/* - * The exception table consists of triples of addresses relative to the - * exception table entry itself. The first address is of an instruction - * that is allowed to fault, the second is the target at which the program - * should continue. The third is a handler function to deal with the fault - * caused by the instruction in the first field. - * - * All the routines below use bits of fixup code that are out of line - * with the main instruction path. This means when everything is well, - * we don't even have to jump over them. Further, they do not intrude - * on our cache or tlb entries. - */ - -struct exception_table_entry { - int insn, fixup, handler; -}; - -#define ARCH_HAS_RELATIVE_EXTABLE - -#define swap_ex_entry_fixup(a, b, tmp, delta) \ - do { \ - (a)->fixup = (b)->fixup + (delta); \ - (b)->fixup = (tmp).fixup - (delta); \ - (a)->handler = (b)->handler + (delta); \ - (b)->handler = (tmp).handler - (delta); \ - } while (0) - -extern int fixup_exception(struct pt_regs *regs, int trapnr); -extern bool ex_has_fault_handler(unsigned long ip); -extern void early_fixup_exception(struct pt_regs *regs, int trapnr); - /* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. diff --git a/drivers/platform/x86/dell-smo8800.c b/drivers/platform/x86/dell-smo8800.c index 0aec4fd4c48e..37e646034ef8 100644 --- a/drivers/platform/x86/dell-smo8800.c +++ b/drivers/platform/x86/dell-smo8800.c @@ -24,6 +24,7 @@ #include #include #include +#include struct smo8800_device { u32 irq; /* acpi device irq */ -- cgit v1.2.3 From 29abfbd9cbba798a89c9f9f977d7d63bff5a5d04 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Sep 2016 11:35:50 -0400 Subject: mips: separate extable.h, switch module.h to it more victims of indirect include chains - au1200fb lasat/picvue_proc and watchdog/ath79_wdt ... as well as tb0219, spotted by Sudip Mukherjee Signed-off-by: Al Viro --- arch/mips/include/asm/extable.h | 13 +++++++++++++ arch/mips/include/asm/module.h | 2 +- arch/mips/include/asm/uaccess.h | 9 +-------- arch/mips/lasat/picvue_proc.c | 1 + drivers/char/tb0219.c | 1 + drivers/video/fbdev/au1200fb.c | 1 + drivers/watchdog/ath79_wdt.c | 1 + 7 files changed, 19 insertions(+), 9 deletions(-) create mode 100644 arch/mips/include/asm/extable.h (limited to 'arch') diff --git a/arch/mips/include/asm/extable.h b/arch/mips/include/asm/extable.h new file mode 100644 index 000000000000..dce7a627a925 --- /dev/null +++ b/arch/mips/include/asm/extable.h @@ -0,0 +1,13 @@ +#ifndef _ASM_EXTABLE_H +#define _ASM_EXTABLE_H + +struct exception_table_entry +{ + unsigned long insn; + unsigned long nextinsn; +}; + +struct pt_regs; +extern int fixup_exception(struct pt_regs *regs); + +#endif diff --git a/arch/mips/include/asm/module.h b/arch/mips/include/asm/module.h index 0aaf9a01ea50..702c273e67a9 100644 --- a/arch/mips/include/asm/module.h +++ b/arch/mips/include/asm/module.h @@ -3,7 +3,7 @@ #include #include -#include +#include struct mod_arch_specific { /* Data Bus Error exception tables */ diff --git a/arch/mips/include/asm/uaccess.h b/arch/mips/include/asm/uaccess.h index 21a2aaba20d5..4daf839cd8a8 100644 --- a/arch/mips/include/asm/uaccess.h +++ b/arch/mips/include/asm/uaccess.h @@ -16,6 +16,7 @@ #include #include #include +#include /* * The fs value determines whether argument validity checking should be @@ -1485,12 +1486,4 @@ static inline long strnlen_user(const char __user *s, long n) return res; } -struct exception_table_entry -{ - unsigned long insn; - unsigned long nextinsn; -}; - -extern int fixup_exception(struct pt_regs *regs); - #endif /* _ASM_UACCESS_H */ diff --git a/arch/mips/lasat/picvue_proc.c b/arch/mips/lasat/picvue_proc.c index 27533c109f92..dd292dcec684 100644 --- a/arch/mips/lasat/picvue_proc.c +++ b/arch/mips/lasat/picvue_proc.c @@ -16,6 +16,7 @@ #include #include +#include #include "picvue.h" diff --git a/drivers/char/tb0219.c b/drivers/char/tb0219.c index 480a777db577..7c19d9b22785 100644 --- a/drivers/char/tb0219.c +++ b/drivers/char/tb0219.c @@ -21,6 +21,7 @@ #include #include #include +#include #include #include diff --git a/drivers/video/fbdev/au1200fb.c b/drivers/video/fbdev/au1200fb.c index f9507b1894df..6c2b2ca4a909 100644 --- a/drivers/video/fbdev/au1200fb.c +++ b/drivers/video/fbdev/au1200fb.c @@ -43,6 +43,7 @@ #include #include #include +#include #include #include /* platform_data */ diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c index 835d310081e1..e2209bf5fa8a 100644 --- a/drivers/watchdog/ath79_wdt.c +++ b/drivers/watchdog/ath79_wdt.c @@ -35,6 +35,7 @@ #include #include #include +#include #define DRIVER_NAME "ath79-wdt" -- cgit v1.2.3 From 88dd4a748da7682966f3e52e5dde9a1b1c0bc9d8 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Sep 2016 11:39:01 -0400 Subject: score: separate extable.h, switch module.h to it Signed-off-by: Al Viro --- arch/score/include/asm/extable.h | 11 +++++++++++ arch/score/include/asm/module.h | 2 +- arch/score/include/asm/uaccess.h | 8 +------- 3 files changed, 13 insertions(+), 8 deletions(-) create mode 100644 arch/score/include/asm/extable.h (limited to 'arch') diff --git a/arch/score/include/asm/extable.h b/arch/score/include/asm/extable.h new file mode 100644 index 000000000000..c4423ccf830d --- /dev/null +++ b/arch/score/include/asm/extable.h @@ -0,0 +1,11 @@ +#ifndef _ASM_SCORE_EXTABLE_H +#define _ASM_SCORE_EXTABLE_H + +struct exception_table_entry { + unsigned long insn; + unsigned long fixup; +}; + +struct pt_regs; +extern int fixup_exception(struct pt_regs *regs); +#endif diff --git a/arch/score/include/asm/module.h b/arch/score/include/asm/module.h index abf395bbfaba..6dc1f2935eef 100644 --- a/arch/score/include/asm/module.h +++ b/arch/score/include/asm/module.h @@ -2,7 +2,7 @@ #define _ASM_SCORE_MODULE_H #include -#include +#include #include struct mod_arch_specific { diff --git a/arch/score/include/asm/uaccess.h b/arch/score/include/asm/uaccess.h index 01aec8ccde83..db58ab98ec4b 100644 --- a/arch/score/include/asm/uaccess.h +++ b/arch/score/include/asm/uaccess.h @@ -4,6 +4,7 @@ #include #include #include +#include #define VERIFY_READ 0 #define VERIFY_WRITE 1 @@ -420,12 +421,5 @@ static inline long strnlen_user(const char __user *str, long len) return __strnlen_user(str, len); } -struct exception_table_entry { - unsigned long insn; - unsigned long fixup; -}; - -extern int fixup_exception(struct pt_regs *regs); - #endif /* __SCORE_UACCESS_H */ -- cgit v1.2.3 From c99d2abd9bc67fd0d578a483f9b82eaa0f61e5c5 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Mon, 5 Sep 2016 11:42:55 -0400 Subject: sparc64: separate extable_64.h, switch elf_64.h to it Signed-off-by: Al Viro --- arch/sparc/include/asm/elf_64.h | 2 +- arch/sparc/include/asm/extable_64.h | 20 ++++++++++++++++++++ arch/sparc/include/asm/uaccess_64.h | 18 +----------------- 3 files changed, 22 insertions(+), 18 deletions(-) create mode 100644 arch/sparc/include/asm/extable_64.h (limited to 'arch') diff --git a/arch/sparc/include/asm/elf_64.h b/arch/sparc/include/asm/elf_64.h index 93310837c2df..3f2d403873bd 100644 --- a/arch/sparc/include/asm/elf_64.h +++ b/arch/sparc/include/asm/elf_64.h @@ -7,7 +7,7 @@ #include #include -#include +#include #include /* diff --git a/arch/sparc/include/asm/extable_64.h b/arch/sparc/include/asm/extable_64.h new file mode 100644 index 000000000000..1121cb056ffb --- /dev/null +++ b/arch/sparc/include/asm/extable_64.h @@ -0,0 +1,20 @@ +#ifndef __ASM_EXTABLE64_H +#define __ASM_EXTABLE64_H +/* + * The exception table consists of pairs of addresses: the first is the + * address of an instruction that is allowed to fault, and the second is + * the address at which the program should continue. No registers are + * modified, so it is entirely up to the continuation code to figure out + * what to do. + * + * All the routines below use bits of fixup code that are out of line + * with the main instruction path. This means when everything is well, + * we don't even have to jump over them. Further, they do not intrude + * on our cache or tlb entries. + */ + +struct exception_table_entry { + unsigned int insn, fixup; +}; + +#endif diff --git a/arch/sparc/include/asm/uaccess_64.h b/arch/sparc/include/asm/uaccess_64.h index 37a315d0ddd4..b68acc563235 100644 --- a/arch/sparc/include/asm/uaccess_64.h +++ b/arch/sparc/include/asm/uaccess_64.h @@ -13,6 +13,7 @@ #include #include #include +#include #endif #ifndef __ASSEMBLY__ @@ -81,23 +82,6 @@ static inline int access_ok(int type, const void __user * addr, unsigned long si return 1; } -/* - * The exception table consists of pairs of addresses: the first is the - * address of an instruction that is allowed to fault, and the second is - * the address at which the program should continue. No registers are - * modified, so it is entirely up to the continuation code to figure out - * what to do. - * - * All the routines below use bits of fixup code that are out of line - * with the main instruction path. This means when everything is well, - * we don't even have to jump over them. Further, they do not intrude - * on our cache or tlb entries. - */ - -struct exception_table_entry { - unsigned int insn, fixup; -}; - void __ret_efault(void); void __retl_efault(void); -- cgit v1.2.3