cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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cacheflush.h (2401B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _ASM_GENERIC_CACHEFLUSH_H
      3#define _ASM_GENERIC_CACHEFLUSH_H
      4
      5struct mm_struct;
      6struct vm_area_struct;
      7struct page;
      8struct address_space;
      9
     10/*
     11 * The cache doesn't need to be flushed when TLB entries change when
     12 * the cache is mapped to physical memory, not virtual memory
     13 */
     14#ifndef flush_cache_all
     15static inline void flush_cache_all(void)
     16{
     17}
     18#endif
     19
     20#ifndef flush_cache_mm
     21static inline void flush_cache_mm(struct mm_struct *mm)
     22{
     23}
     24#endif
     25
     26#ifndef flush_cache_dup_mm
     27static inline void flush_cache_dup_mm(struct mm_struct *mm)
     28{
     29}
     30#endif
     31
     32#ifndef flush_cache_range
     33static inline void flush_cache_range(struct vm_area_struct *vma,
     34				     unsigned long start,
     35				     unsigned long end)
     36{
     37}
     38#endif
     39
     40#ifndef flush_cache_page
     41static inline void flush_cache_page(struct vm_area_struct *vma,
     42				    unsigned long vmaddr,
     43				    unsigned long pfn)
     44{
     45}
     46#endif
     47
     48#ifndef ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE
     49static inline void flush_dcache_page(struct page *page)
     50{
     51}
     52
     53#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0
     54#endif
     55
     56#ifndef flush_dcache_mmap_lock
     57static inline void flush_dcache_mmap_lock(struct address_space *mapping)
     58{
     59}
     60#endif
     61
     62#ifndef flush_dcache_mmap_unlock
     63static inline void flush_dcache_mmap_unlock(struct address_space *mapping)
     64{
     65}
     66#endif
     67
     68#ifndef flush_icache_range
     69static inline void flush_icache_range(unsigned long start, unsigned long end)
     70{
     71}
     72#endif
     73
     74#ifndef flush_icache_user_range
     75#define flush_icache_user_range flush_icache_range
     76#endif
     77
     78#ifndef flush_icache_page
     79static inline void flush_icache_page(struct vm_area_struct *vma,
     80				     struct page *page)
     81{
     82}
     83#endif
     84
     85#ifndef flush_icache_user_page
     86static inline void flush_icache_user_page(struct vm_area_struct *vma,
     87					   struct page *page,
     88					   unsigned long addr, int len)
     89{
     90}
     91#endif
     92
     93#ifndef flush_cache_vmap
     94static inline void flush_cache_vmap(unsigned long start, unsigned long end)
     95{
     96}
     97#endif
     98
     99#ifndef flush_cache_vunmap
    100static inline void flush_cache_vunmap(unsigned long start, unsigned long end)
    101{
    102}
    103#endif
    104
    105#ifndef copy_to_user_page
    106#define copy_to_user_page(vma, page, vaddr, dst, src, len)	\
    107	do { \
    108		memcpy(dst, src, len); \
    109		flush_icache_user_page(vma, page, vaddr, len); \
    110	} while (0)
    111#endif
    112
    113#ifndef copy_from_user_page
    114#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
    115	memcpy(dst, src, len)
    116#endif
    117
    118#endif /* _ASM_GENERIC_CACHEFLUSH_H */