This patchset adds logging support for CXL CPER endpoint and port protocol errors. The first 5 patches update the existing codebase to support CXL CPER Protocol error reporting. The last 2 patches introduce recognizing and reporting CXL CPER Protocol errors. Should be based on top of: https://lore.kernel.org/linux-cxl/20241113215429.3177981-1-terry.bowman@xxxxxxx Link to v2: https://lore.kernel.org/linux-cxl/20241001005234.61409-1-Smita.KoralahalliChannabasappa@xxxxxxx/ Changes in v2 -> v3: [Dan]: Define a new workqueue for CXL CPER Protocol errors and avoid reusing existing workqueue which handles CXL CPER events. [Dan] Update function and struct names. [Ira] Don't define common function get_cxl_devstate(). [Dan] Use switch cases rather than defining array of structures. [Dan] Pass the entire cxl_cper_prot_err struct for CXL subsystem. [Dan] Use pr_err_ratelimited(). [Dan] Use AER_ severities directly. Don't define CXL_ severities. [Dan] Limit either to Device ID or Agent Info check. [Dan] Validate size of RAS field matches expectations. Changes in v2 -> v1: [Jonathan] Refactor code for trace support. Rename get_cxl_dev() to get_cxl_devstate(). [Jonathan] Cleanups for get_cxl_devstate(). [Alison, Jonathan]: Define array of structures for Device ID and Serial number comparison. [Dave] p_err -> rec/p_rec. [Jonathan] Remove pr_warn. Smita Koralahalli (7): efi/cper, cxl: Prefix protocol error struct and function names with cxl_ efi/cper, cxl: Make definitions and structures global efi/cper, cxl: Remove cper_cxl.h acpi/ghes, cxl: Rename cxl_cper_register_work to cxl_cper_register_event_work acpi/ghes, cxl: Refactor work registration functions to support multiple workqueues acpi/ghes, cper: Recognize and cache CXL Protocol errors acpi/ghes, cxl/pci: Process CXL CPER Protocol Errors drivers/acpi/apei/ghes.c | 129 +++++++++++++++++++++++++++++--- drivers/cxl/core/pci.c | 50 +++++++++++++ drivers/cxl/cxlpci.h | 6 ++ drivers/cxl/pci.c | 59 ++++++++++++++- drivers/firmware/efi/cper.c | 6 +- drivers/firmware/efi/cper_cxl.c | 39 +--------- drivers/firmware/efi/cper_cxl.h | 66 ---------------- include/cxl/event.h | 109 ++++++++++++++++++++++++++- include/linux/cper.h | 8 ++ 9 files changed, 351 insertions(+), 121 deletions(-) delete mode 100644 drivers/firmware/efi/cper_cxl.h -- 2.17.1
