• Emese Revfy's avatar
    x86, mtrr: Constify struct mtrr_ops · 3b9cfc0a
    Emese Revfy authored
    This is part of the ops structure constification
    effort started by Arjan van de Ven et al.
    
    Benefits of this constification:
    
     * prevents modification of data that is shared
       (referenced) by many other structure instances
       at runtime
    
     * detects/prevents accidental (but not intentional)
       modification attempts on archs that enforce
       read-only kernel data at runtime
    
     * potentially better optimized code as the compiler
       can assume that the const data cannot be changed
    
     * the compiler/linker move const data into .rodata
       and therefore exclude them from false sharing
    Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
    LKML-Reference: <4B65D712.3080804@gmail.com>
    Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
    3b9cfc0a
amd.c 3.08 KB