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There are some functions to probe (look into) the page tables (for current context.. maybe for all the conext too).</div>
<div style="LINE-HEIGHT: 15pt">look under /arch/x86(yours)/mm.</div>
<div style="LINE-HEIGHT: 15pt">This page table is in the memory so the S/W can probe it.</div>
<div style="LINE-HEIGHT: 15pt">But I don't think we can see whan page table entries we have in the page descriptor cache (that's stored by the MMU hardware).</div>
<div style="LINE-HEIGHT: 15pt">Chan</div>
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<div style="LINE-HEIGHT: 15pt"><b>From : </b>"Valdis.Kletnieks@vt.edu" <Valdis.Kletnieks@vt.edu><br>
<b>Sent : </b>2014-03-21 03:49:36 ( +09:00 )<br>
<b>To : </b>pravin jadav <pravin.jadav17@gmail.com><br>
<b>Cc : </b>Kernelnewbies@kernelnewbies.org <Kernelnewbies@kernelnewbies.org><br>
<b>Subject : </b>Re: how to get PFN of page cache?<br>
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On Thu, 20 Mar 2014 17:14:57 +0530, pravin jadav said:<br>
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> i want to develop linux kernel module that will get PFN of pagecache pages.<br>
> please help me how to develop this kind of kernel module.<br>
<br>
What do you intend to do with the page once you find its PFN? It's quite<br>
possible there's already an API to do what you want without even needing<br>
its PFN - or good technical reasons to not do what your module intends to<br>
do once it has the PFN....<br>
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