linux-kernel - Re: [PATCH v2 2/4] cxl/pci: Define a common function get_cxl

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Message-ID: <bca60d5d-a395-9733-5aed-b83bc924cbe6@amd.com>
Date: Thu, 3 Oct 2024 11:44:16 -0700
From: Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>
To: Dan Williams <dan.j.williams@...el.com>, linux-efi@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-cxl@...r.kernel.org
Cc: Ard Biesheuvel <ardb@...nel.org>,
 Alison Schofield <alison.schofield@...el.com>,
 Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny <ira.weiny@...el.com>,
 Jonathan Cameron <Jonathan.Cameron@...wei.com>,
 Yazen Ghannam <yazen.ghannam@....com>, Bowman Terry <terry.bowman@....com>
Subject: Re: [PATCH v2 2/4] cxl/pci: Define a common function
 get_cxl_devstate()



On 10/2/2024 4:04 PM, Dan Williams wrote:
> Smita Koralahalli wrote:
>> Refactor computation of cxlds to a common function get_cxl_devstate().
>>
>> The above function could then be reused in both FW-First Component and
>> Protocol error reporting and handling.
> 
> Ira caught the bug in the cleanup conversion, but I am otherwise not
> convinced there would be much reuse for a helper like this given any
> endpoint-flagged protocol errors would reuse the common
> cxl_handle_cper_event(), unless I am missing something?
> 

Yeah, the only intent was to not redo the BDF decoding at two places. I 
don't see a problem in calling cxl_handle_prot_err() inside 
cxl_handle_cper_event() as Ira suggested in 4/4.

However, I think all of this would fall off if we isolate protocol 
errors from cxl_cper_fifo and handle them separately.

Thanks
Smita