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c8e412f79d
Commit
bc8e80d56c ("x86/mce: Merge mce_amd_inj into mce-inject")
removed the last .c file from arch/x86/ras/, so that there is now only
a lonely Kconfig file in this folder. Its config switches CONFIG_RAS_CEC and
CONFIG_RAS_CEC_DEBUG are only used in code that resides in drivers/ras/, so
those Kconfig switches should better reside in drivers/ras/, too. Thus move
the contents of arch/x86/ras/ into drivers/ras/Kconfig now.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://patch.msgid.link/20260410122748.29978-1-thuth@redhat.com
72 lines
2.8 KiB
Plaintext
72 lines
2.8 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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menuconfig RAS
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bool "Reliability, Availability and Serviceability (RAS) features"
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help
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Reliability, availability and serviceability (RAS) is a computer
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hardware engineering term. Computers designed with higher levels
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of RAS have a multitude of features that protect data integrity
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and help them stay available for long periods of time without
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failure.
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Reliability can be defined as the probability that the system will
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produce correct outputs up to some given time. Reliability is
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enhanced by features that help to avoid, detect and repair hardware
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faults.
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Availability is the probability a system is operational at a given
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time, i.e. the amount of time a device is actually operating as the
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percentage of total time it should be operating.
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Serviceability or maintainability is the simplicity and speed with
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which a system can be repaired or maintained; if the time to repair
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a failed system increases, then availability will decrease.
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Note that Reliability and Availability are distinct concepts:
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Reliability is a measure of the ability of a system to function
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correctly, including avoiding data corruption, whereas Availability
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measures how often it is available for use, even though it may not
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be functioning correctly. For example, a server may run forever and
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so have ideal availability, but may be unreliable, with frequent
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data corruption.
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if RAS
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config RAS_CEC
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bool "Correctable Errors Collector"
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depends on X86_MCE && MEMORY_FAILURE && DEBUG_FS
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help
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This is a small cache which collects correctable memory errors per 4K
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page PFN and counts their repeated occurrence. Once the counter for a
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PFN overflows, we try to soft-offline that page as we take it to mean
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that it has reached a relatively high error count and would probably
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be best if we don't use it anymore.
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Bear in mind that this is absolutely useless if your platform doesn't
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have ECC DIMMs and doesn't have DRAM ECC checking enabled in the BIOS.
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config RAS_CEC_DEBUG
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bool "CEC debugging machinery"
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default n
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depends on RAS_CEC
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help
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Add extra files to (debugfs)/ras/cec to test the correctable error
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collector feature. "pfn" is a writable file that allows user to
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simulate an error in a particular page frame. "array" is a read-only
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file that dumps out the current state of all pages logged so far.
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source "drivers/ras/amd/atl/Kconfig"
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config RAS_FMPM
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tristate "FRU Memory Poison Manager"
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default m
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depends on AMD_ATL && ACPI_APEI
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help
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Support saving and restoring memory error information across reboot
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using ACPI ERST as persistent storage. Error information is saved with
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the UEFI CPER "FRU Memory Poison" section format.
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Memory will be retired during boot time and run time depending on
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platform-specific policies.
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endif
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