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powerpc/uaccess: Move copy_mc_xxx() functions down

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copy_mc_xxx() functions are in the middle of raw_copy functions.

For clarity, move them out of the raw_copy functions block.

They are using access_ok, so they need to be after the general
functions in order to eventually allow the inclusion of
asm-generic/uaccess.h in some future.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/2cdecb6e5a2fcee6c158d18dd254b71ec0e0da4d.1615398498.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-03-10 17:57:02 +00:00 committed by Michael Ellerman
parent 7472199a6e
commit 4b8cda5881
1 changed files with 26 additions and 26 deletions
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52
arch/powerpc/include/asm/uaccess.h
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@ -351,32 +351,6 @@ do { \
extern unsigned long __copy_tofrom_user(void __user *to, extern unsigned long __copy_tofrom_user(void __user *to,
const void __user *from, unsigned long size); const void __user *from, unsigned long size);
#ifdef CONFIG_ARCH_HAS_COPY_MC
unsigned long __must_check
copy_mc_generic(void *to, const void *from, unsigned long size);
static inline unsigned long __must_check
copy_mc_to_kernel(void *to, const void *from, unsigned long size)
{
return copy_mc_generic(to, from, size);
}
#define copy_mc_to_kernel copy_mc_to_kernel
static inline unsigned long __must_check
copy_mc_to_user(void __user *to, const void *from, unsigned long n)
{
if (likely(check_copy_size(from, n, true))) {
if (access_ok(to, n)) {
allow_write_to_user(to, n);
n = copy_mc_generic((void *)to, from, n);
prevent_write_to_user(to, n);
}
}
return n;
}
#endif
#ifdef __powerpc64__ #ifdef __powerpc64__
static inline unsigned long static inline unsigned long
raw_copy_in_user(void __user *to, const void __user *from, unsigned long n) raw_copy_in_user(void __user *to, const void __user *from, unsigned long n)
@ -433,6 +407,32 @@ static inline unsigned long clear_user(void __user *addr, unsigned long size)
extern long strncpy_from_user(char *dst, const char __user *src, long count); extern long strncpy_from_user(char *dst, const char __user *src, long count);
extern __must_check long strnlen_user(const char __user *str, long n); extern __must_check long strnlen_user(const char __user *str, long n);
#ifdef CONFIG_ARCH_HAS_COPY_MC
unsigned long __must_check
copy_mc_generic(void *to, const void *from, unsigned long size);
static inline unsigned long __must_check
copy_mc_to_kernel(void *to, const void *from, unsigned long size)
{
return copy_mc_generic(to, from, size);
}
#define copy_mc_to_kernel copy_mc_to_kernel
static inline unsigned long __must_check
copy_mc_to_user(void __user *to, const void *from, unsigned long n)
{
if (likely(check_copy_size(from, n, true))) {
if (access_ok(to, n)) {
allow_write_to_user(to, n);
n = copy_mc_generic((void *)to, from, n);
prevent_write_to_user(to, n);
}
}
return n;
}
#endif
extern long __copy_from_user_flushcache(void *dst, const void __user *src, extern long __copy_from_user_flushcache(void *dst, const void __user *src,
unsigned size); unsigned size);
extern void memcpy_page_flushcache(char *to, struct page *page, size_t offset, extern void memcpy_page_flushcache(char *to, struct page *page, size_t offset,