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| author | Kyle Huey <khuey@kylehuey.com> | 2020-09-23 14:19:09 -0700 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2020-09-24 09:22:45 +0200 |
| commit | fbccb980e5b48375047114777d203401a9e33c6c (patch) | |
| tree | f7da1fa0e018f29462d97f082f4b3415d15fe5f1 /docs | |
| parent | 6de6f4891f0a051cf317dcc65e49d21b3ca1783c (diff) | |
| download | systemd-fbccb980e5b48375047114777d203401a9e33c6c.tar.gz | |
random-util: Add an environment variable to disable RDRAND.
SYSTEMD_RDRAND=0 will prevent using RDRAND even on systems whose CPUID claims
to support it. All other values have no effect.
Fixes: #17112
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/ENVIRONMENT.md | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md index ea433a497a..38752c9169 100644 --- a/docs/ENVIRONMENT.md +++ b/docs/ENVIRONMENT.md @@ -80,6 +80,9 @@ All tools: honoured on systems built with libxcrypt and is ignored on systems using glibc's original, internal crypt() implementation.) +* `$SYSTEMD_RDRAND=0` — if set, the RDRAND instruction will never be used, + even if the CPU supports it. + systemctl: * `$SYSTEMCTL_FORCE_BUS=1` — if set, do not connect to PID1's private D-Bus |