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Fix ptrace aliasing issue in copy_from_user_page / copy_to_user_page.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2005-02-09 12:59:39 +00:00
parent 505403b6a0
commit 26852d5cdb
1 changed files with 7 additions and 1 deletions
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8
include/asm-mips/cacheflush.h
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@ -55,11 +55,17 @@ extern void (*flush_icache_range)(unsigned long start, unsigned long end);
#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
do { \
if (cpu_has_dc_aliases) \
flush_cache_page(vma, vaddr); \
memcpy(dst, (void *) src, len); \
flush_icache_page(vma, page); \
} while (0)
#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
memcpy(dst, src, len)
do { \
if (cpu_has_dc_aliases) \
flush_cache_page(vma, vaddr); \
memcpy(dst, src, len); \
} while (0)
extern void (*flush_cache_sigtramp)(unsigned long addr);
extern void (*flush_icache_all)(void);