From 4213dd2398acd4a02bf6ab0e8b5d7e00f3ba7d1a Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 6 Sep 2022 16:58:17 +0200 Subject: README: clarify baseline situation a bit (add emojis!) --- README | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'README') diff --git a/README b/README index 4f9fcc7170..c465c3288f 100644 --- a/README +++ b/README @@ -43,10 +43,15 @@ REQUIREMENTS: ≥ 5.4 for signed Verity images ≥ 5.7 for BPF links and the BPF LSM hook - Kernel versions below 4.15 have significant gaps in functionality and - are not recommended for use with this version of systemd. Taint flag - 'old-kernel' will be set. Systemd will most likely still function, but - upstream support and testing are limited. + 🛑 Kernel versions below 3.15 ("minimum baseline") are not supported at + all, and are missing required functionality (e.g. CLOCK_BOOTIME support + for timerfd_create()). + + ⚠️ Kernel versions below 4.15 ("recommended baseline") have significant + gaps in functionality and are not recommended for use with this version + of systemd (e.g. sufficiently comprehensive and working cgroupv2 + support). Taint flag 'old-kernel' will be set. systemd will most likely + still function, but upstream support and testing are limited. Kernel Config Options: CONFIG_DEVTMPFS -- cgit v1.2.3