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From: Andrew Morton <akpm@linux-foundation.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: linux-mm@kvack.org, linux-nvdimm@lists.01.org
Subject: Re: [PATCH v6] mm/pgmap: Use correct alignment when looking at first pfn from a region
Date: Thu, 19 Sep 2019 12:25:01 -0700
Message-ID: <20190919122501.df660f0d23806a3f46d11b61@linux-foundation.org> (raw)
In-Reply-To: <20190917153129.12905-1-aneesh.kumar@linux.ibm.com>

On Tue, 17 Sep 2019 21:01:29 +0530 "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> wrote:

> vmem_altmap_offset() adjust the section aligned base_pfn offset.
> So we need to make sure we account for the same when computing base_pfn.
> 
> ie, for altmap_valid case, our pfn_first should be:
> 
> pfn_first = altmap->base_pfn + vmem_altmap_offset(altmap);

What are the user-visible runtime effects of this change?


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Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-17 15:31 Aneesh Kumar K.V
2019-09-17 21:57 ` Ralph Campbell
2019-09-19 19:25 ` Andrew Morton [this message]
2019-09-25  3:51   ` Aneesh Kumar K.V

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