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| author | Oliver O'Halloran | 2017-10-19 09:13:55 +0200 |
|---|---|---|
| committer | Michael Ellerman | 2017-11-12 22:00:31 +0100 |
| commit | 6c44741d75a27985a0496cd58b123a58c7177108 (patch) | |
| tree | cabc19300cc31e282e8663bc071b37ab24187c00 /arch/powerpc/include/asm/uaccess.h | |
| parent | powerpc/lib: Implement PMEM API (diff) | |
| download | kernel-qcow2-linux-6c44741d75a27985a0496cd58b123a58c7177108.tar.gz kernel-qcow2-linux-6c44741d75a27985a0496cd58b123a58c7177108.tar.xz kernel-qcow2-linux-6c44741d75a27985a0496cd58b123a58c7177108.zip | |
powerpc/lib: Implement UACCESS_FLUSHCACHE API
Implement the architecture specific portitions of the UACCESS_FLUSHCACHE
API. This provides functions for the copy_user_flushcache iterator that
ensure that when the copy is finished the destination buffer contains
a copy of the original and that the destination buffer is clean in the
processor caches.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/uaccess.h')
| -rw-r--r-- | arch/powerpc/include/asm/uaccess.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index e34f15e727d9..19a3f75ed610 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -356,4 +356,9 @@ 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 __must_check long strnlen_user(const char __user *str, long n); +extern long __copy_from_user_flushcache(void *dst, const void __user *src, + unsigned size); +extern void memcpy_page_flushcache(char *to, struct page *page, size_t offset, + size_t len); + #endif /* _ARCH_POWERPC_UACCESS_H */ |