linux-kernel - Re: [RESEND v13 19/25] cxl/pci: Introduce CXL protocol error handlers for Endpoints

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Message-ID: <20251104190913.GA1866025@bhelgaas>
Date: Tue, 4 Nov 2025 13:09:13 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: Terry Bowman <terry.bowman@....com>
Cc: dave@...olabs.net, jonathan.cameron@...wei.com, dave.jiang@...el.com,
	alison.schofield@...el.com, dan.j.williams@...el.com,
	bhelgaas@...gle.com, shiju.jose@...wei.com, ming.li@...omail.com,
	Smita.KoralahalliChannabasappa@....com, rrichter@....com,
	dan.carpenter@...aro.org, PradeepVineshReddy.Kodamati@....com,
	lukas@...ner.de, Benjamin.Cheatham@....com,
	sathyanarayanan.kuppuswamy@...ux.intel.com,
	linux-cxl@...r.kernel.org, alucerop@....com, ira.weiny@...el.com,
	linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [RESEND v13 19/25] cxl/pci: Introduce CXL protocol error
 handlers for Endpoints

On Tue, Nov 04, 2025 at 11:02:59AM -0600, Terry Bowman wrote:
> CXL Endpoint protocol errors are currently handled by generic PCI error
> handlers. However, uncorrectable errors (UCEs) require CXL.mem protocol-
> specific handling logic that the PCI handlers cannot provide.

> +++ b/drivers/cxl/core/ras.c

> +static bool is_pcie_endpoint(struct pci_dev *pdev)
> +{
> +	return pci_pcie_type(pdev) == PCI_EXP_TYPE_ENDPOINT;
> +}

Seems like a weird place for this since it's not CXL related.