• Linus Torvalds's avatar
    Merge tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random · 818e607b
    Linus Torvalds authored
    Pull random driver updates from Ted Ts'o:
     "A number of improvements for the /dev/random driver; the most
      important is the use of a ChaCha20-based CRNG for /dev/urandom, which
      is faster, more efficient, and easier to make scalable for
      silly/abusive userspace programs that want to read from /dev/urandom
      in a tight loop on NUMA systems.
    
      This set of patches also improves entropy gathering on VM's running on
      Microsoft Azure, and will take advantage of a hw random number
      generator (if present) to initialize the /dev/urandom pool"
    
    (It turns out that the random tree hadn't been in linux-next this time
    around, because it had been dropped earlier as being too quiet.  Oh
    well).
    
    * tag 'random_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/random:
      random: strengthen input validation for RNDADDTOENTCNT
      random: add backtracking protection to the CRNG
      random: make /dev/urandom scalable for silly userspace programs
      random: replace non-blocking pool with a Chacha20-based CRNG
      random: properly align get_random_int_hash
      random: add interrupt callback to VMBus IRQ handler
      random: print a warning for the first ten uninitialized random users
      random: initialize the non-blocking pool via add_hwgenerator_randomness()
    818e607b
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