linux-kernel - Re: [PATCH v5 4/7] cxl/region: Add helper to check Soft Reserved containment by CXL regions

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Message-ID: <c9e2707d-88a6-4740-8b10-157a45ec7fc3@amd.com>
Date: Tue, 27 Jan 2026 13:47:23 -0800
From: "Koralahalli Channabasappa, Smita" <skoralah@....com>
To: Jonathan Cameron <jonathan.cameron@...wei.com>,
 Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>
Cc: linux-cxl@...r.kernel.org, linux-kernel@...r.kernel.org,
 nvdimm@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
 linux-pm@...r.kernel.org, Ard Biesheuvel <ardb@...nel.org>,
 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>,
 Yazen Ghannam <yazen.ghannam@....com>, Dave Jiang <dave.jiang@...el.com>,
 Davidlohr Bueso <dave@...olabs.net>, Matthew Wilcox <willy@...radead.org>,
 Jan Kara <jack@...e.cz>, "Rafael J . Wysocki" <rafael@...nel.org>,
 Len Brown <len.brown@...el.com>, Pavel Machek <pavel@...nel.org>,
 Li Ming <ming.li@...omail.com>, Jeff Johnson
 <jeff.johnson@....qualcomm.com>, Ying Huang <huang.ying.caritas@...il.com>,
 Yao Xingtao <yaoxt.fnst@...itsu.com>, Peter Zijlstra <peterz@...radead.org>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Nathan Fontenot <nathan.fontenot@....com>,
 Terry Bowman <terry.bowman@....com>, Robert Richter <rrichter@....com>,
 Benjamin Cheatham <benjamin.cheatham@....com>,
 Zhijian Li <lizhijian@...itsu.com>, Borislav Petkov <bp@...en8.de>,
 Tomasz Wolski <tomasz.wolski@...itsu.com>
Subject: Re: [PATCH v5 4/7] cxl/region: Add helper to check Soft Reserved
 containment by CXL regions

On 1/22/2026 8:25 AM, Jonathan Cameron wrote:
> On Thu, 22 Jan 2026 04:55:40 +0000
> Smita Koralahalli <Smita.KoralahalliChannabasappa@....com> wrote:
> 
>> Add a helper to determine whether a given Soft Reserved memory range is
>> fully contained within the committed CXL region.
>>
>> This helper provides a primitive for policy decisions in subsequent
>> patches such as co-ordination with dax_hmem to determine whether CXL has
>> fully claimed ownership of Soft Reserved memory ranges.
>>
>> No functional changes are introduced by this patch.
> 
> Given it's not used yet, I'd not have this line of description.
> We tend to say things like that on refactor patches.

Sure, let me fix this

Thanks
Smita

> 
>>
>> Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@....com>
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>
>