[PATCH 0/3] random: wire up in-kernel virtual machine fork notifications

From: Jason A. Donenfeld
Date: Tue Mar 01 2022 - 18:10:54 EST


As discussed, here is the notifier for learning when a virtual machine
forks, as well as a first use case for it, which is unsurprisingly
WireGuard, since I happen to know that case rather well.

The first patch is a small cleanup discovered when working on the second
patch, which is adding the actual notifier. The third case then
trivially adds it to WireGuard.

Jason A. Donenfeld (3):
random: replace custom notifier chain with standard one
random: provide notifier for VM fork
wireguard: device: clear keys on VM fork

drivers/char/random.c | 82 ++++++++++++++--------------------
drivers/net/wireguard/device.c | 27 +++++------
include/linux/random.h | 16 +++----
lib/random32.c | 12 ++---
lib/vsprintf.c | 10 +++--
5 files changed, 69 insertions(+), 78 deletions(-)

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2.35.1