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2b420aaf80
Notify memory tools about usercopy events in copy_to_user_page() and copy_from_user_page(). Link: https://lkml.kernel.org/r/20220915150417.722975-6-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Reviewed-by: Marco Elver <elver@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
128 lines
2.6 KiB
C
128 lines
2.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_GENERIC_CACHEFLUSH_H
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#define _ASM_GENERIC_CACHEFLUSH_H
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#include <linux/instrumented.h>
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struct mm_struct;
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struct vm_area_struct;
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struct page;
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struct address_space;
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/*
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* The cache doesn't need to be flushed when TLB entries change when
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* the cache is mapped to physical memory, not virtual memory
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*/
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#ifndef flush_cache_all
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static inline void flush_cache_all(void)
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{
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}
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#endif
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#ifndef flush_cache_mm
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static inline void flush_cache_mm(struct mm_struct *mm)
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{
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}
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#endif
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#ifndef flush_cache_dup_mm
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static inline void flush_cache_dup_mm(struct mm_struct *mm)
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{
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}
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#endif
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#ifndef flush_cache_range
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static inline void flush_cache_range(struct vm_area_struct *vma,
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unsigned long start,
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unsigned long end)
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{
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}
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#endif
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#ifndef flush_cache_page
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static inline void flush_cache_page(struct vm_area_struct *vma,
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unsigned long vmaddr,
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unsigned long pfn)
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{
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}
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#endif
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#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
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static inline void flush_dcache_page(struct page *page)
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{
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}
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#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
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#endif
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#ifndef flush_dcache_mmap_lock
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static inline void flush_dcache_mmap_lock(struct address_space *mapping)
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{
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}
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#endif
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#ifndef flush_dcache_mmap_unlock
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static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
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{
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}
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#endif
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#ifndef flush_icache_range
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static inline void flush_icache_range(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef flush_icache_user_range
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#define flush_icache_user_range flush_icache_range
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#endif
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#ifndef flush_icache_page
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static inline void flush_icache_page(struct vm_area_struct *vma,
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struct page *page)
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{
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}
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#endif
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#ifndef flush_icache_user_page
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static inline void flush_icache_user_page(struct vm_area_struct *vma,
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struct page *page,
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unsigned long addr, int len)
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{
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}
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#endif
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#ifndef flush_cache_vmap
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static inline void flush_cache_vmap(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef flush_cache_vunmap
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static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
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{
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}
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#endif
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#ifndef copy_to_user_page
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#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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instrument_copy_to_user((void __user *)dst, src, len); \
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memcpy(dst, src, len); \
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flush_icache_user_page(vma, page, vaddr, len); \
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} while (0)
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#endif
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#ifndef copy_from_user_page
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#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
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do { \
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instrument_copy_from_user_before(dst, (void __user *)src, \
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len); \
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memcpy(dst, src, len); \
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instrument_copy_from_user_after(dst, (void __user *)src, len, \
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0); \
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} while (0)
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#endif
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#endif /* _ASM_GENERIC_CACHEFLUSH_H */
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