On Tue, 14 Jan 2025 12:04:27 +0000 Smita Koralahalli <Smita.KoralahalliChannabasappa@xxxxxxx> wrote: > When PCIe AER is in FW-First, OS should process CXL Protocol errors from > CPER records. Introduce support for handling and logging CXL Protocol > errors. > > The defined trace events cxl_aer_uncorrectable_error and > cxl_aer_correctable_error trace native CXL AER endpoint errors, while > cxl_cper_trace_corr_prot_err and cxl_cper_trace_uncorr_prot_err > trace native CXL AER port errors. Reuse both sets to trace FW-First > protocol errors. > > Since the CXL code is required to be called from process context and > GHES is in interrupt context, use workqueues for processing. > > Similar to CXL CPER event handling, use kfifo to handle errors as it > simplifies queue processing by providing lock free fifo operations. > > Add the ability for the CXL sub-system to register a workqueue to > process CXL CPER protocol errors. > > Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@xxxxxxx> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
