# SPDX-License-Identifier: GPL-2.0
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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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