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Kirill Smelkov
linux
Commits
2ef59f28
Commit
2ef59f28
authored
Mar 28, 2017
by
Al Viro
Browse files
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Plain Diff
unicore32: get rid of zeroing and switch to RAW_COPY_USER
Signed-off-by:
Al Viro
<
viro@zeniv.linux.org.uk
>
parent
d597580d
Changes
5
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5 changed files
with
16 additions
and
17 deletions
+16
-17
arch/unicore32/Kconfig
arch/unicore32/Kconfig
+1
-0
arch/unicore32/include/asm/uaccess.h
arch/unicore32/include/asm/uaccess.h
+4
-2
arch/unicore32/kernel/ksyms.c
arch/unicore32/kernel/ksyms.c
+2
-2
arch/unicore32/lib/copy_from_user.S
arch/unicore32/lib/copy_from_user.S
+6
-10
arch/unicore32/lib/copy_to_user.S
arch/unicore32/lib/copy_to_user.S
+3
-3
No files found.
arch/unicore32/Kconfig
View file @
2ef59f28
...
...
@@ -18,6 +18,7 @@ config UNICORE32
select ARCH_WANT_FRAME_POINTERS
select GENERIC_IOMAP
select MODULES_USE_ELF_REL
select ARCH_HAS_RAW_COPY_USER
help
UniCore-32 is 32-bit Instruction Set Architecture,
including a series of low-power-consumption RISC chip
...
...
arch/unicore32/include/asm/uaccess.h
View file @
2ef59f28
...
...
@@ -24,15 +24,17 @@
#define __access_ok(addr, size) (__kernel_ok || __user_ok((addr), (size)))
extern
unsigned
long
__must_check
_
_copy_from_user
(
void
*
to
,
const
void
__user
*
from
,
unsigned
long
n
);
raw
_copy_from_user
(
void
*
to
,
const
void
__user
*
from
,
unsigned
long
n
);
extern
unsigned
long
__must_check
_
_copy_to_user
(
void
__user
*
to
,
const
void
*
from
,
unsigned
long
n
);
raw
_copy_to_user
(
void
__user
*
to
,
const
void
*
from
,
unsigned
long
n
);
extern
unsigned
long
__must_check
__clear_user
(
void
__user
*
addr
,
unsigned
long
n
);
extern
unsigned
long
__must_check
__strncpy_from_user
(
char
*
to
,
const
char
__user
*
from
,
unsigned
long
count
);
extern
unsigned
long
__strnlen_user
(
const
char
__user
*
s
,
long
n
);
#define INLINE_COPY_FROM_USER
#define INLINE_COPY_TO_USER
#include <asm-generic/uaccess.h>
...
...
arch/unicore32/kernel/ksyms.c
View file @
2ef59f28
...
...
@@ -46,8 +46,8 @@ EXPORT_SYMBOL(__strncpy_from_user);
EXPORT_SYMBOL
(
copy_page
);
EXPORT_SYMBOL
(
_
_copy_from_user
);
EXPORT_SYMBOL
(
_
_copy_to_user
);
EXPORT_SYMBOL
(
raw
_copy_from_user
);
EXPORT_SYMBOL
(
raw
_copy_to_user
);
EXPORT_SYMBOL
(
__clear_user
);
EXPORT_SYMBOL
(
__ashldi3
);
...
...
arch/unicore32/lib/copy_from_user.S
View file @
2ef59f28
...
...
@@ -16,7 +16,7 @@
/*
*
Prototype
:
*
*
size_t
_
_copy_from_user
(
void
*
to
,
const
void
*
from
,
size_t
n
)
*
size_t
raw
_copy_from_user
(
void
*
to
,
const
void
*
from
,
size_t
n
)
*
*
Purpose
:
*
...
...
@@ -87,22 +87,18 @@
.
text
ENTRY
(
_
_copy_from_user
)
ENTRY
(
raw
_copy_from_user
)
#include "copy_template.S"
ENDPROC
(
_
_copy_from_user
)
ENDPROC
(
raw
_copy_from_user
)
.
pushsection
.
fixup
,
"ax"
.
align
0
copy_abort_preamble
ldm.w
(
r1
,
r2
),
[
sp
]+
sub
r3
,
r0
,
r1
rsub
r2
,
r3
,
r2
stw
r2
,
[
sp
]
mov
r1
,
#
0
b.l
memset
ldw.w
r0
,
[
sp
]+,
#
4
ldm.w
(
r1
,
r2
,
r3
),
[
sp
]+
sub
r0
,
r0
,
r1
rsub
r0
,
r0
,
r2
copy_abort_end
.
popsection
arch/unicore32/lib/copy_to_user.S
View file @
2ef59f28
...
...
@@ -16,7 +16,7 @@
/*
*
Prototype
:
*
*
size_t
_
_copy_to_user
(
void
*
to
,
const
void
*
from
,
size_t
n
)
*
size_t
raw
_copy_to_user
(
void
*
to
,
const
void
*
from
,
size_t
n
)
*
*
Purpose
:
*
...
...
@@ -79,11 +79,11 @@
.
text
WEAK
(
_
_copy_to_user
)
WEAK
(
raw
_copy_to_user
)
#include "copy_template.S"
ENDPROC
(
_
_copy_to_user
)
ENDPROC
(
raw
_copy_to_user
)
.
pushsection
.
fixup
,
"ax"
.
align
0
...
...
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