• Guo Ren's avatar
    csky: Fixup 610 vipt cache flush mechanism · 4ad35c1f
    Guo Ren authored
    610 has vipt aliasing issue, so we need to finish the cache flush
    apis mentioned in cachetlb.rst to avoid data corruption.
    
    Here is the list of modified apis in the patch:
    
     - flush_kernel_dcache_page      (new add)
     - flush_dcache_mmap_lock        (new add)
     - flush_dcache_mmap_unlock      (new add)
     - flush_kernel_vmap_range       (new add)
     - invalidate_kernel_vmap_range  (new add)
     - flush_anon_page               (new add)
     - flush_cache_range             (new add)
     - flush_cache_vmap              (flush all)
     - flush_cache_vunmap            (flush all)
     - flush_cache_mm                (only dcache flush)
     - flush_icache_page             (just nop)
     - copy_from_user_page           (remove no need flush)
     - copy_to_user_page             (remove no need flush)
    
    Change to V2:
     - Fixup compile error with xa_lock*(&mapping->i_pages)
    Signed-off-by: default avatarGuo Ren <ren_guo@c-sky.com>
    Cc: Arnd Bergmann <arnd@arndb.de>
    Cc: Christoph Hellwig <hch@infradead.org>
    4ad35c1f
cacheflush.h 1.9 KB