linux-kernel - Re: [PATCH 06/15] cxl/aer/pci: Introduce PCI_ERS_RESULT_PANIC to pci_ers

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Message-ID: <20241016173011.000021e4@Huawei.com>
Date: Wed, 16 Oct 2024 17:30:11 +0100
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Terry Bowman <terry.bowman@....com>
CC: <ming4.li@...el.com>, <linux-cxl@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-pci@...r.kernel.org>,
	<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>, <oohall@...il.com>,
	<Benjamin.Cheatham@....com>, <rrichter@....com>, <nathan.fontenot@....com>,
	<smita.koralahallichannabasappa@....com>
Subject: Re: [PATCH 06/15] cxl/aer/pci: Introduce PCI_ERS_RESULT_PANIC to
 pci_ers_result type

On Tue, 8 Oct 2024 17:16:48 -0500
Terry Bowman <terry.bowman@....com> wrote:

> The CXL AER service will be updated to support CXL PCIe port error
> handling in the future. These devices will use a system panic during
> recovery handling.

Recovery handling by panic? :) That's an interesting form of recovery..

> 
> Add PCI_ERS_RESULT_PANIC enumeration to pci_ers_result type.
> 
> Signed-off-by: Terry Bowman <terry.bowman@....com>
> ---
>  include/linux/pci.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/linux/pci.h b/include/linux/pci.h
> index 4cf89a4b4cbc..6f7e7371161d 100644
> --- a/include/linux/pci.h
> +++ b/include/linux/pci.h
> @@ -857,6 +857,9 @@ enum pci_ers_result {
>  
>  	/* No AER capabilities registered for the driver */
>  	PCI_ERS_RESULT_NO_AER_DRIVER = (__force pci_ers_result_t) 6,
> +
> +	/* Device state requires system panic */
> +	PCI_ERS_RESULT_PANIC = (__force pci_ers_result_t) 7,
>  };
>  
>  /* PCI bus error event callbacks */