linux-kernel - Re: [PATCH v8 13/16] cxl/pci: Assign CXL Endpoint protocol error handlers

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Message-ID: <20250423174928.00005879@huawei.com>
Date: Wed, 23 Apr 2025 17:49:28 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Terry Bowman <terry.bowman@....com>
CC: <linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-pci@...r.kernel.org>, <nifan.cxl@...il.com>, <dave@...olabs.net>,
	<dave.jiang@...el.com>, <alison.schofield@...el.com>,
	<vishal.l.verma@...el.com>, <dan.j.williams@...el.com>,
	<bhelgaas@...gle.com>, <mahesh@...ux.ibm.com>, <ira.weiny@...el.com>,
	<oohall@...il.com>, <Benjamin.Cheatham@....com>, <rrichter@....com>,
	<nathan.fontenot@....com>, <Smita.KoralahalliChannabasappa@....com>,
	<lukas@...ner.de>, <ming.li@...omail.com>,
	<PradeepVineshReddy.Kodamati@....com>
Subject: Re: [PATCH v8 13/16] cxl/pci: Assign CXL Endpoint protocol error
 handlers

On Wed, 26 Mar 2025 20:47:14 -0500
Terry Bowman <terry.bowman@....com> wrote:

> CXL Endpoint protocol errors are currently handled using PCI error
> handlers. The CXL Endpoint requires CXL specific handling in the case of
> uncorrectable error handling not provided by the PCI handlers.
> 
> Add CXL specific handlers for CXL Endpoints. Assign the CXL handlers
> during Endpoint Port initialization.
> 
> Keep the PCI Endpoint handlers. PCI handlers can be called if the CXL
> device is not trained for alternate protocol (CXL). Update the CXL
> Endpoint PCI handlers to call the CXL handler. If the CXL
> uncorrectable handler returns PCI_ERS_RESULT_PANIC then the PCI
> handler invokes panic().
> 
> Signed-off-by: Terry Bowman <terry.bowman@....com>

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>