• Emese Revfy's avatar
    latent_entropy: Mark functions with __latent_entropy · 0766f788
    Emese Revfy authored
    The __latent_entropy gcc attribute can be used only on functions and
    variables.  If it is on a function then the plugin will instrument it for
    gathering control-flow entropy. If the attribute is on a variable then
    the plugin will initialize it with random contents.  The variable must
    be an integer, an integer array type or a structure with integer fields.
    
    These specific functions have been selected because they are init
    functions (to help gather boot-time entropy), are called at unpredictable
    times, or they have variable loops, each of which provide some level of
    latent entropy.
    Signed-off-by: default avatarEmese Revfy <re.emese@gmail.com>
    [kees: expanded commit message]
    Signed-off-by: default avatarKees Cook <keescook@chromium.org>
    0766f788
genhd.h 22.7 KB