linux-kernel - Re: [PATCH v3 01/11] cxl/region: Store root decoder in struct cxl

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Message-ID: <20250915111430.00003fc6@huawei.com>
Date: Mon, 15 Sep 2025 11:14:30 +0100
From: Jonathan Cameron <jonathan.cameron@...wei.com>
To: Dave Jiang <dave.jiang@...el.com>
CC: Robert Richter <rrichter@....com>, Alison Schofield
	<alison.schofield@...el.com>, Vishal Verma <vishal.l.verma@...el.com>, "Ira
 Weiny" <ira.weiny@...el.com>, Dan Williams <dan.j.williams@...el.com>,
	Davidlohr Bueso <dave@...olabs.net>, <linux-cxl@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, Gregory Price <gourry@...rry.net>, "Fabio M.
 De Francesco" <fabio.m.de.francesco@...ux.intel.com>, Terry Bowman
	<terry.bowman@....com>, Joshua Hahn <joshua.hahnjy@...il.com>
Subject: Re: [PATCH v3 01/11] cxl/region: Store root decoder in struct
 cxl_region

On Fri, 12 Sep 2025 08:52:06 -0700
Dave Jiang <dave.jiang@...el.com> wrote:

> On 9/12/25 7:45 AM, Robert Richter wrote:
> > A region is always bound to a root decoder. The region's associated
> > root decoder is often needed. Add it to struct cxl_region.
> > 
> > This simplifies code by removing dynamic lookups and removing the root
> > decoder argument from the function argument list where possible.
> > 
> > Patch is a prerequisite to implement address translation which uses
> > struct cxl_region to store all relevant region and interleaving
> > parameters.
> > 
> > Signed-off-by: Robert Richter <rrichter@....com>  
> 
> Reviewed-by: Dave Jiang <dave.jiang@...el.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>