On Thu, Jan 23, 2025 at 08:44:20AM +0000, Smita Koralahalli 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. Reuse them > 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: Dave Jiang <dave.jiang@xxxxxxxxx> > Reviewed-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx> > Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx> Reviewed-by: Gregory Price <gourry@xxxxxxxxxx>
