1 What: /sys/devices/system/machineche
2 Contact: Borislav Petkov <bp@suse.de>
3 Date: Dec, 2021
4 Description:
5 Unused and obsolete after the
6 checks (see last sentence belo
7 2010 (Nehalem).
8
9 Original description:
10
11 The entries appear for each CP
12 between all CPUs.
13
14 Tolerance level. When a machin
15 non corrected machine check th
16 actions.
17
18 Since machine check exceptions
19 sometimes risky for the kernel
20 defies normal kernel locking r
21 configures how hard the kernel
22 risk of deadlock. Higher toler
23 better uptime with the risk of
24 (for tolerant >= 3).
25
26 == ==========================
27 0 always panic on uncorrecte
28 1 panic or SIGBUS on uncorre
29 2 SIGBUS or log uncorrected
30 3 never panic or SIGBUS, log
31 == ==========================
32
33 Default: 1
34
35 Note this only makes a differe
36 from a machine check exception
37 do not.
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