[v3,0/8] rerandomize RNG seeds on reboot and handle record&replay

Message

Jason A. Donenfeld Oct. 14, 2022, 2:16 a.m. UTC

When the system reboots, the rng seed that QEMU passes should be
re-randomized, so that the new boot gets a new seed. This series wires
that up for FDT.

Then, since the record&replay subsystem makes use of reset as well, we
add a new reset cause for record&replay, so that we can avoid
re-randomizing in these cases.

Jason A. Donenfeld (8):
  reset: allow registering handlers that aren't called by snapshot
    loading
  x86: do not re-randomize RNG seed on snapshot load
  device-tree: add re-randomization helper function
  arm: re-randomize rng-seed on reboot
  riscv: re-randomize rng-seed on reboot
  openrisc: re-randomize rng-seed on reboot
  rx: re-randomize rng-seed on reboot
  mips: re-randomize rng-seed on reboot

 hw/arm/aspeed.c              |  4 ++--
 hw/arm/boot.c                |  2 ++
 hw/arm/mps2-tz.c             |  4 ++--
 hw/core/reset.c              | 15 ++++++++++++++-
 hw/hppa/machine.c            |  4 ++--
 hw/i386/microvm.c            |  4 ++--
 hw/i386/pc.c                 |  6 +++---
 hw/i386/x86.c                |  2 +-
 hw/mips/boston.c             |  3 +++
 hw/openrisc/boot.c           |  3 +++
 hw/ppc/pegasos2.c            |  4 ++--
 hw/ppc/pnv.c                 |  4 ++--
 hw/ppc/spapr.c               |  4 ++--
 hw/riscv/boot.c              |  3 +++
 hw/rx/rx-gdbsim.c            |  3 +++
 hw/s390x/s390-virtio-ccw.c   |  4 ++--
 include/hw/boards.h          |  2 +-
 include/sysemu/device_tree.h |  9 +++++++++
 include/sysemu/reset.h       |  5 ++++-
 migration/savevm.c           |  2 +-
 qapi/run-state.json          |  4 +++-
 softmmu/device_tree.c        | 21 +++++++++++++++++++++
 softmmu/runstate.c           |  4 ++--
 23 files changed, 89 insertions(+), 27 deletions(-)

Comments

Jason A. Donenfeld Oct. 20, 2022, 5:38 p.m. UTC | #1

Hey Peter,

Could you queue this up again like last time?

Thanks,
Jason