[Qemu-devel] [Bug 1811758] [NEW] virtio-rng backend should use getentropy() syscall when available

[dkg]

Public bug reported:

According to https://wiki.qemu.org/Features/VirtIORNG the default
backend for `virtio-rng-pci` is `/dev/random`.  Alternately, the user
can point it to a different backend file, like `/dev/urandom`.

However, both of these files have suboptimal behavior in one way or
another, as documented in `random(7)`.  Instead, the default behavior
should be to pull the requested octets from the `getrandom()` system
call, if available, called with no flags set.

** Affects: qemu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1811758

Title:
  virtio-rng backend should use getentropy() syscall when available

Status in QEMU:
  New

Bug description:
  According to https://wiki.qemu.org/Features/VirtIORNG the default
  backend for `virtio-rng-pci` is `/dev/random`.  Alternately, the user
  can point it to a different backend file, like `/dev/urandom`.

  However, both of these files have suboptimal behavior in one way or
  another, as documented in `random(7)`.  Instead, the default behavior
  should be to pull the requested octets from the `getrandom()` system
  call, if available, called with no flags set.

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