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24ec41f7c7
CXL spec 3.1 section 8.2.9.2.1.2 Table 8-46, DRAM Event Record has updated with following new fields and new types for Memory Event Type, Transaction Type and Validity Flags fields. 1. Component Identifier 2. Sub-channel 3. Advanced Programmable Corrected Memory Error Threshold Event Flags 4. Corrected Memory Error Count at Event 5. Memory Event Sub-Type Update DRAM events record and DRAM trace event for the above spec changes. The new fields are inserted in logical places. Includes trivial consistency of white space improvements. Example trace print of cxl_dram trace event, cxl_dram: memdev=mem0 host=0000:0f:00.0 serial=3 log=Informational : \ time=54799339519 uuid=601dcbb3-9c06-4eab-b8af-4e9bfb5c9624 len=128 \ flags='0x1' handle=1 related_handle=0 maint_op_class=1 \ maint_op_sub_class=3 : dpa=18680 dpa_flags='' \ descriptor='UNCORRECTABLE_EVENT|THRESHOLD_EVENT' type='Data Path Error' \ sub_type='Media Link CRC Error' transaction_type='Internal Media Scrub' \ channel=3 rank=17 nibble_mask=3b00b2 bank_group=7 bank=11 row=2 \ column=77 cor_mask=21 00 00 00 00 00 00 00 2c 00 00 00 00 00 00 00 37 00 \ 00 00 00 00 00 00 42 00 00 00 00 00 00 00 validity_flags='CHANNEL|RANK|NIBBLE|\ BANK GROUP|BANK|ROW|COLUMN|CORRECTION MASK|COMPONENT|COMPONENT PLDM FORMAT' \ comp_id=01 74 c5 08 9a 1a 0b fc d2 7e 2f 31 9b 3c 81 4d \ comp_id_pldm_valid_flags='PLDM Entity ID' pldm_entity_id=74 c5 08 9a 1a 0b \ pldm_resource_id=0x00 hpa=ffffffffffffffff region= \ region_uuid=00000000-0000-0000-0000-000000000000 sub_channel=5 \ cme_threshold_ev_flags='Corrected Memory Errors in Multiple Media Components|\ Exceeded Programmable Threshold' cvme_count=148 Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Reviewed-by: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Shiju Jose <shiju.jose@huawei.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Link: https://patch.msgid.link/20250111091756.1682-5-shiju.jose@huawei.com Signed-off-by: Dave Jiang <dave.jiang@intel.com> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.