linux-kernel - Re: [PATCH v6] cxl: docs/driver-api/conventions resolve conflicts between CFMWS, Low memory Holes, Decoders

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Message-ID: <aMhaf-SF9YvUXwfX@aschofie-mobl2.lan>
Date: Mon, 15 Sep 2025 11:27:11 -0700
From: Alison Schofield <alison.schofield@...el.com>
To: "Fabio M. De Francesco" <fabio.m.de.francesco@...ux.intel.com>
CC: <linux-cxl@...r.kernel.org>, Davidlohr Bueso <dave@...olabs.net>,
	"Jonathan Cameron" <jonathan.cameron@...wei.com>, Dave Jiang
	<dave.jiang@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, Ira Weiny
	<ira.weiny@...el.com>, "Dan Williams" <dan.j.williams@...el.com>, Jonathan
 Corbet <corbet@....net>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, ALOK TIWARI <alok.a.tiwari@...cle.com>, Randy
 Dunlap <rdunlap@...radead.org>, "Gregory Price" <gourry@...rry.net>, Bagas
 Sanjaya <bagasdotme@...il.com>, "Robert Richter" <rrichter@....com>
Subject: Re: [PATCH v6] cxl: docs/driver-api/conventions resolve conflicts
 between CFMWS, Low memory Holes, Decoders

On Mon, Sep 15, 2025 at 04:57:20PM +0200, Fabio M. De Francesco wrote:
> Add documentation on how to resolve conflicts between CXL Fixed Memory
> Windows, Platform Low Memory Holes, intermediate Switch and Endpoint
> Decoders.
> 
> Reviewed-by: Gregory Price <gourry@...rry.net>
> Signed-off-by: Fabio M. De Francesco <fabio.m.de.francesco@...ux.intel.com>
> ---
> 
> v5 -> v6: Extend "Summary of The Change" with detailed explanation about
> 	  the mismatch between the Root and the other HDM Decoders HPA
> 	  range sizes (Gregory)
> 	  Clarify that this change is exclusively intended to enable x86
> 	  platforms which map CXL memory under 4GB (Gregory)
> 

Following on what is noted as Gregory's feedback above, and considering
that the conventions document exists to describe solutions to platform
quirks, would it be clearer to state the platform quirk in the commit
msg rather than generalizing?

Replace this:
cxl: docs/driver-api/conventions resolve conflicts between CFMWS, Low memory Holes, Decoders
With this:
cxl: Documentation/driver-api/cxl: Describe the x86 Low Memory Hole solution

That also aligns w existing format for this files commit messages.
Hoping DaveJ can update the commit message upon applying.
Otherwise, LGTM

Reviewed-by: Alison Schofield <alison.schofield@...el.com>