linux-kernel - Re: [PATCH v2 08/15] cxl/region: Use the endpoint's SPA range to find a region

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Message-ID: <20250314124553.000077de@huawei.com>
Date: Fri, 14 Mar 2025 12:45:53 +0000
From: Jonathan Cameron <Jonathan.Cameron@...wei.com>
To: Robert Richter <rrichter@....com>
CC: 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>, Dave Jiang <dave.jiang@...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>
Subject: Re: [PATCH v2 08/15] cxl/region: Use the endpoint's SPA range to
 find a region

On Tue, 18 Feb 2025 14:23:49 +0100
Robert Richter <rrichter@....com> wrote:

> To find the correct region and root port of an endpoint of a system
> needing address translation, the endpoint's HPA range must be
> translated to each of the parent port address ranges up to the root
> decoder.
> 
> Use the calculated SPA range of an endpoint to find the endpoint's
> region.
> 
> Signed-off-by: Robert Richter <rrichter@....com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@...wei.com>