linux-kernel - Re: [PATCH v3 17/25] cxl/core: Return endpoint decoder information from region search

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Message-ID: <ad874bbe-7e56-4a2b-b924-c1595aab5c65@intel.com>
Date: Tue, 3 Sep 2024 15:10:34 +0800
From: "Li, Ming4" <ming4.li@...el.com>
To: Ira Weiny <ira.weiny@...el.com>, Dave Jiang <dave.jiang@...el.com>, Fan Ni
	<fan.ni@...sung.com>, Jonathan Cameron <Jonathan.Cameron@...wei.com>,
	"Navneet Singh" <navneet.singh@...el.com>, Chris Mason <clm@...com>, Josef
 Bacik <josef@...icpanda.com>, David Sterba <dsterba@...e.com>, Petr Mladek
	<pmladek@...e.com>, Steven Rostedt <rostedt@...dmis.org>, Andy Shevchenko
	<andriy.shevchenko@...ux.intel.com>, Rasmus Villemoes
	<linux@...musvillemoes.dk>, Sergey Senozhatsky <senozhatsky@...omium.org>,
	Jonathan Corbet <corbet@....net>, Andrew Morton <akpm@...ux-foundation.org>
CC: Dan Williams <dan.j.williams@...el.com>, Davidlohr Bueso
	<dave@...olabs.net>, Alison Schofield <alison.schofield@...el.com>, "Vishal
 Verma" <vishal.l.verma@...el.com>, <linux-btrfs@...r.kernel.org>,
	<linux-cxl@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <nvdimm@...ts.linux.dev>
Subject: Re: [PATCH v3 17/25] cxl/core: Return endpoint decoder information
 from region search

On 8/16/2024 10:44 PM, Ira Weiny wrote:
> cxl_dpa_to_region() finds the region from a <DPA, device> tuple.
> The search involves finding the device endpoint decoder as well.
>
> Dynamic capacity extent processing uses the endpoint decoder HPA
> information to calculate the HPA offset.  In addition, well behaved
> extents should be contained within an endpoint decoder.
>
> Return the endpoint decoder found to be used in subsequent DCD code.
>
> Signed-off-by: Ira Weiny <ira.weiny@...el.com>
Reviewed-by: Li Ming <ming4.li@...el.com>