linux-kernel - Re: [PATCH v5 01/16] PCI/AER: Introduce 'struct cxl_err_handlers' and add to 'struct pci

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Message-ID: <Z6Tq5mWoxiD3LyQ3@gourry-fedora-PF4VCD3F>
Date: Thu, 6 Feb 2025 12:01:26 -0500
From: Gregory Price <gourry@...rry.net>
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,
	jonathan.cameron@...wei.com, 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,
	alucerop@....com
Subject: Re: [PATCH v5 01/16] PCI/AER: Introduce 'struct cxl_err_handlers'
 and add to 'struct pci_driver'

On Tue, Jan 07, 2025 at 08:38:37AM -0600, Terry Bowman wrote:
> CXL.io provides protocol error handling on top of PCIe Protocol Error
> handling. But, CXL.io and PCIe have different handling requirements
> for uncorrectable errors (UCE).
> 
> The PCIe AER service driver may attempt recovering PCIe devices with
> UCE while recovery is not used for CXL.io. Recovery is not used in the
> CXL.io case because of potential corruption on what can be system memory.
> 
> Create pci_driver::cxl_err_handlers structure similar to
> pci_driver::error_handler. Create handlers for correctable and
> uncorrectable CXL.io error handling.
> 
> The CXL error handlers will be used in future patches adding CXL PCIe
> Port Protocol Error handling.
> 
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>
> Reviewed-by: Dave Jiang <dave.jiang@...el.com>
> Reviewed-by: Fan Ni <fan.ni@...sung.com>

Reviewed-by: Gregory Price <gourry@...rry.net>