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Date:	Mon, 14 Jul 2014 10:05:18 +0530
From:	Amit Shah <>
Cc:	Virtualization List <>,
	Rusty Russell <>,,,, Amit Shah <>
Subject: [RFC PATCH 0/3] hw_random: support for delayed init randomness requests


This series introduces a way to allow devices to contribute to initial
system randomness after a certain delay.  Specifically, the virtio-rng
device can contribute initial randomness only after a successful

A delayed workqueue item is queued in the system queue to fetch this
randomness if the device indicates it's capable of contributing only
after a delay, via the new HWRNG_DELAY_READ_AT_INIT flag.

This series is intended for the next merge window.  I've marked it as
RFC because the last revert doesn't yet have a linux.git sha1.  I'll
re-post when the previous series gets committed.

Please review,

Amit Shah (3):
  hw_random: allow RNG devices to give early randomness after a delay
  virtio: rng: only accept delayed early randomness requests
  Revert "virtio: rng: ensure reads happen after successful probe"

 drivers/char/hw_random/core.c       | 26 +++++++++++++++++++-------
 drivers/char/hw_random/virtio-rng.c | 11 +----------
 include/linux/hw_random.h           |  8 ++++++++
 3 files changed, 28 insertions(+), 17 deletions(-)


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