How to calculate page address to PFN in user space.

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To: LKML <linux-kernel@xxxxxxxxxxxxxxx>, "linux-mm@xxxxxxxxx" <linux-mm@xxxxxxxxx>, "kernelnewbies@xxxxxxxxxxxxxxxxx" <kernelnewbies@xxxxxxxxxxxxxxxxx>
Subject: How to calculate page address to PFN in user space.
From: Pankaj Suryawanshi <suryawanshipankaj@xxxxxxxxx>
Date: Fri, 5 Apr 2019 10:54:47 +0000 (UTC)
References: <1536252828.16026118.1554461687939.ref@mail.yahoo.com>
Reply-to: Pankaj Suryawanshi <suryawanshipankaj@xxxxxxxxx>

Hello,

I have PFN of all processes in user space, how to calculate page address to PFN.

eg .

page address :bf05febc in kernel space.


I have PFN no for user space processes as below.

8a81b
69da0
88cf4
88d06
88d07
9549f
952d0
9734a
87c7d
87ca0

How to calculate/match page address to PFN ?

Regards,
Pankaj

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