diff options
Diffstat (limited to 'arch/openrisc')
| -rw-r--r-- | arch/openrisc/Kconfig | 1 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/Kbuild | 1 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/cmpxchg.h | 8 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/pgtable.h | 1 | ||||
| -rw-r--r-- | arch/openrisc/include/asm/uaccess.h | 48 | ||||
| -rw-r--r-- | arch/openrisc/kernel/or32_ksyms.c | 4 | ||||
| -rw-r--r-- | arch/openrisc/kernel/process.c | 1 |
7 files changed, 22 insertions, 42 deletions
diff --git a/arch/openrisc/Kconfig b/arch/openrisc/Kconfig index 1e95920b0737..38954181fa96 100644 --- a/arch/openrisc/Kconfig +++ b/arch/openrisc/Kconfig @@ -28,6 +28,7 @@ config OPENRISC select OR1K_PIC select CPU_NO_EFFICIENT_FFS if !OPENRISC_HAVE_INST_FF1 select NO_BOOTMEM + select ARCH_HAS_RAW_COPY_USER config MMU def_bool y diff --git a/arch/openrisc/include/asm/Kbuild b/arch/openrisc/include/asm/Kbuild index fb01873a5aad..df8e2f7bc7dd 100644 --- a/arch/openrisc/include/asm/Kbuild +++ b/arch/openrisc/include/asm/Kbuild @@ -16,6 +16,7 @@ generic-y += dma.h generic-y += emergency-restart.h generic-y += errno.h generic-y += exec.h +generic-y += extable.h generic-y += fb.h generic-y += fcntl.h generic-y += ftrace.h diff --git a/arch/openrisc/include/asm/cmpxchg.h b/arch/openrisc/include/asm/cmpxchg.h index 5fcb9ac72693..f0a5d8b844d6 100644 --- a/arch/openrisc/include/asm/cmpxchg.h +++ b/arch/openrisc/include/asm/cmpxchg.h @@ -77,7 +77,11 @@ static inline unsigned long __xchg(unsigned long val, volatile void *ptr, return val; } -#define xchg(ptr, with) \ - ((typeof(*(ptr)))__xchg((unsigned long)(with), (ptr), sizeof(*(ptr)))) +#define xchg(ptr, with) \ + ({ \ + (__typeof__(*(ptr))) __xchg((unsigned long)(with), \ + (ptr), \ + sizeof(*(ptr))); \ + }) #endif /* __ASM_OPENRISC_CMPXCHG_H */ diff --git a/arch/openrisc/include/asm/pgtable.h b/arch/openrisc/include/asm/pgtable.h index 3567aa7be555..ff97374ca069 100644 --- a/arch/openrisc/include/asm/pgtable.h +++ b/arch/openrisc/include/asm/pgtable.h @@ -25,6 +25,7 @@ #ifndef __ASM_OPENRISC_PGTABLE_H #define __ASM_OPENRISC_PGTABLE_H +#define __ARCH_USE_5LEVEL_HACK #include <asm-generic/pgtable-nopmd.h> #ifndef __ASSEMBLY__ diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h index 227af1acb8bd..a557a7cd0232 100644 --- a/arch/openrisc/include/asm/uaccess.h +++ b/arch/openrisc/include/asm/uaccess.h @@ -25,6 +25,7 @@ #include <linux/prefetch.h> #include <linux/string.h> #include <asm/page.h> +#include <asm/extable.h> /* * The fs value determines whether argument validity checking should be @@ -61,23 +62,6 @@ __range_ok((unsigned long)addr, (unsigned long)size) /* - * 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 long insn, fixup; -}; - -/* * These are the main single-value transfer routines. They automatically * use the right size if we just have the right pointer type. * @@ -206,7 +190,7 @@ do { \ case 1: __get_user_asm(x, ptr, retval, "l.lbz"); break; \ case 2: __get_user_asm(x, ptr, retval, "l.lhz"); break; \ case 4: __get_user_asm(x, ptr, retval, "l.lwz"); break; \ - case 8: __get_user_asm2(x, ptr, retval); \ + case 8: __get_user_asm2(x, ptr, retval); break; \ default: (x) = __get_user_bad(); \ } \ } while (0) @@ -252,34 +236,18 @@ do { \ extern unsigned long __must_check __copy_tofrom_user(void *to, const void *from, unsigned long size); - -#define __copy_from_user(to, from, size) \ - __copy_tofrom_user(to, from, size) -#define __copy_to_user(to, from, size) \ - __copy_tofrom_user(to, from, size) - -#define __copy_to_user_inatomic __copy_to_user -#define __copy_from_user_inatomic __copy_from_user - static inline unsigned long -copy_from_user(void *to, const void *from, unsigned long n) +raw_copy_from_user(void *to, const void __user *from, unsigned long size) { - unsigned long res = n; - - if (likely(access_ok(VERIFY_READ, from, n))) - res = __copy_tofrom_user(to, from, n); - if (unlikely(res)) - memset(to + (n - res), 0, res); - return res; + return __copy_tofrom_user(to, (__force const void *)from, size); } - static inline unsigned long -copy_to_user(void *to, const void *from, unsigned long n) +raw_copy_to_user(void *to, const void __user *from, unsigned long size) { - if (likely(access_ok(VERIFY_WRITE, to, n))) - n = __copy_tofrom_user(to, from, n); - return n; + return __copy_tofrom_user((__force void *)to, from, size); } +#define INLINE_COPY_FROM_USER +#define INLINE_COPY_TO_USER extern unsigned long __clear_user(void *addr, unsigned long size); diff --git a/arch/openrisc/kernel/or32_ksyms.c b/arch/openrisc/kernel/or32_ksyms.c index 5c4695d13542..ee3e604959e1 100644 --- a/arch/openrisc/kernel/or32_ksyms.c +++ b/arch/openrisc/kernel/or32_ksyms.c @@ -30,6 +30,7 @@ #include <asm/hardirq.h> #include <asm/delay.h> #include <asm/pgalloc.h> +#include <asm/pgtable.h> #define DECLARE_EXPORT(name) extern void name(void); EXPORT_SYMBOL(name) @@ -42,6 +43,9 @@ DECLARE_EXPORT(__muldi3); DECLARE_EXPORT(__ashrdi3); DECLARE_EXPORT(__ashldi3); DECLARE_EXPORT(__lshrdi3); +DECLARE_EXPORT(__ucmpdi2); +EXPORT_SYMBOL(empty_zero_page); EXPORT_SYMBOL(__copy_tofrom_user); +EXPORT_SYMBOL(__clear_user); EXPORT_SYMBOL(memset); diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c index 828a29110459..f8da545854f9 100644 --- a/arch/openrisc/kernel/process.c +++ b/arch/openrisc/kernel/process.c @@ -90,6 +90,7 @@ void arch_cpu_idle(void) } void (*pm_power_off) (void) = machine_power_off; +EXPORT_SYMBOL(pm_power_off); /* * When a process does an "exec", machine state like FPU and debug |