| rjw | 1f88458 | 2022-01-06 17:20:42 +0800 | [diff] [blame^] | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 2 | config RAS_CEC |
| 3 | bool "Correctable Errors Collector" |
| 4 | depends on X86_MCE && MEMORY_FAILURE && DEBUG_FS |
| 5 | ---help--- |
| 6 | This is a small cache which collects correctable memory errors per 4K |
| 7 | page PFN and counts their repeated occurrence. Once the counter for a |
| 8 | PFN overflows, we try to soft-offline that page as we take it to mean |
| 9 | that it has reached a relatively high error count and would probably |
| 10 | be best if we don't use it anymore. |
| 11 | |
| 12 | Bear in mind that this is absolutely useless if your platform doesn't |
| 13 | have ECC DIMMs and doesn't have DRAM ECC checking enabled in the BIOS. |