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-rw-r--r--arch/openrisc/Kconfig1
-rw-r--r--arch/openrisc/include/asm/Kbuild1
-rw-r--r--arch/openrisc/include/asm/cmpxchg.h8
-rw-r--r--arch/openrisc/include/asm/pgtable.h1
-rw-r--r--arch/openrisc/include/asm/uaccess.h48
-rw-r--r--arch/openrisc/kernel/or32_ksyms.c4
-rw-r--r--arch/openrisc/kernel/process.c1
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