tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Fix ptrace aliasing issue in copy_from_user_page / copy_to_user_page.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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include/asm-mips/cacheflush.h
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include/asm-mips/cacheflush.h
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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if (cpu_has_dc_aliases) \
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flush_cache_page(vma, vaddr); \
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memcpy(dst, (void *) src, len); \
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flush_icache_page(vma, page); \
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} while (0)
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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memcpy(dst, src, len)
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do { \
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if (cpu_has_dc_aliases) \
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flush_cache_page(vma, vaddr); \
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memcpy(dst, src, len); \
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} while (0)
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extern void (*flush_cache_sigtramp)(unsigned long addr);
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extern void (*flush_icache_all)(void);