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shared/hibernate-util: drop support for kernels lacking /sys/power/resume_offset

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The current fallback path is actually unreliable, given
the kernel *supports* setting the resume offset through
cmdline after all, but just not exposed under /sys/.
For v258 let's drop it hence.

I didn't bump the baseline to 4.17, but merely documented
new requirement in README, because there's certainly more
compat stuff to drop between 4.3 and 4.17, and README is
a useful list for things to kill. We'll get to 5.4 eventually.
This commit is contained in:
Mike Yuan
2025-01-02 04:32:00 +01:00
parent 733bc1aee8
commit de69879b62
2 changed files with 14 additions and 32 deletions
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README
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@@ -36,7 +36,7 @@ REQUIREMENTS:
≥ 4.10 for cgroup-bpf egress and ingress hooks
≥ 4.11 for nsfs
≥ 4.15 for cgroup-bpf device hook and cpu controller in cgroup v2
≥ 4.17 for cgroup-bpf socket address hooks
≥ 4.17 for cgroup-bpf socket address hooks and /sys/power/resume_offset
≥ 4.20 for PSI (used by systemd-oomd)
≥ 5.2 for cgroup freezer
≥ 5.3 for bounded loops in BPF program