1 .. SPDX-License-Identifier: GPL-2.0 2 3 =============================================================== 4 Configurable sysfs parameters for the x86-64 machine check code 5 =============================================================== 6 7 Machine checks report internal hardware error conditions detected 8 by the CPU. Uncorrected errors typically cause a machine check 9 (often with panic), corrected ones cause a machine check log entry. 10 11 Machine checks are organized in banks (normally associated with 12 a hardware subsystem) and subevents in a bank. The exact meaning 13 of the banks and subevent is CPU specific. 14 15 mcelog knows how to decode them. 16 17 When you see the "Machine check errors logged" message in the system 18 log then mcelog should run to collect and decode machine check entries 19 from /dev/mcelog. Normally mcelog should be run regularly from a cronjob. 20 21 Each CPU has a directory in /sys/devices/system/machinecheck/machinecheckN 22 (N = CPU number). 23 24 The directory contains some configurable entries. See 25 Documentation/ABI/testing/sysfs-mce for more details. 26 27 TBD document entries for AMD threshold interrupt configuration 28 29 For more details about the x86 machine check architecture 30 see the Intel and AMD architecture manuals from their developer websites. 31 32 For more details about the architecture 33 see http://one.firstfloor.org/~andi/mce.pdf
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