From: Andrew Morton <akpm@linux-foundation.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
Cc: dan.j.williams@intel.com, linux-nvdimm@lists.01.org, linux-mm@kvack.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 [thread overview]
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?
next prev parent reply other threads:[~2019-09-19 19:25 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 15:31 [PATCH v6] mm/pgmap: Use correct alignment when looking at first pfn from a region 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
2019-11-30 23:13 ` Andrew Morton
2019-12-03 0:50 ` Dan Williams
2019-12-03 10:12 ` Aneesh Kumar K.V
2020-01-31 4:26 ` Andrew Morton
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