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[Bug 1365593] Re: No driver provided for X-Gene's hardware RNG

 

This bug was fixed in the package linux - 3.16.0-14.20

---------------
linux (3.16.0-14.20) utopic; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1366431

  [ dann frazier ]

  * [Config] CONFIG_HW_RANDOM_XGENE=m on arm64

  [ Manish Chopra ]

  * SAUCE: bnx2x: Configure device endianity on driver load and reset
    endianity on removal.
    - LP: #1356948

  [ Tim Gardner ]

  * [Config] CONFIG_XMON=y
    - LP: #1365655
  * [Config] CONFIG_KVM_BOOK3S_64=m for ppc64el
    - LP: #1362514
  * [Config] CONFIG_KVM_BOOK3S_64_HV=m
    - LP: #1362514

  [ Upstream Kernel Changes ]

  * hwrng: xgene - add support for APM X-Gene SoC RNG support
    - LP: #1365593
  * Documentation: rng: Add X-Gene SoC RNG driver documentation
    - LP: #1365593
  * arm64: dts: add random number generator dts node to APM X-Gene
    platform.
  * KVM: PPC: Book3S: Move vcore definition to end of kvm_arch struct
    - LP: #1362514
  * KVM: Move more code under CONFIG_HAVE_KVM_IRQFD
    - LP: #1362514

  [ Upstream Kernel Changes ]

  * rebase to v3.16.2
    - LP: #1358116
    - LP: #1334950
    - LP: #1350148
 -- Tim Gardner <tim.gardner@xxxxxxxxxxxxx>   Sat, 06 Sep 2014 07:52:15 -0700

** Changed in: linux (Ubuntu Utopic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1365593

Title:
  No driver provided for X-Gene's hardware RNG

Status in “linux” package in Ubuntu:
  Fix Released
Status in “linux” source package in Trusty:
  Confirmed
Status in “linux” source package in Utopic:
  Fix Released

Bug description:
  [Impact]
  User has a system with a built-in random number generator that the OS cannot use.

  [Test Case]
  Make sure rng-tools is uninstalled.
  Reboot with this driver, verify that it is automatically loaded. Leave system idle for this test.
  In one terminal, run 'watch cat /proc/sys/kernel/random/entropy_avail', and note that the minor fluctuation in available entropy over time. Install rng-tools, and notice that entropy shoots up and grows at a faster rate than previously.

  [Regression Potential]
  If this driver is buggy it could cause e.g. an oops or a panic that would not otherwise have occurred.

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References