From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Matias Zabaljauregui" <matias.zabaljauregui@cern.ch>
Subject: Lguest
Date: Thu, 28 Jun 2007 19:03:39 +0200
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Hello Rusty,

I'have just started to read the code (and I'm not an expert kernel
programmer), but is this condition ok ?


(function setup_pagetables(), on file Documentation/lguest.c )

    /* Ideally we map all physical memory starting at page_offset.
     * However, if page_offset is 0xC0000000 we can only map 1G of physical
     * (0xC0000000 + 1G overflows). */

    if (mem > -page_offset)
        mapped_pages = mem/getpagesize();
    else
        mapped_pages = -page_offset/getpagesize();



Cheers

Matias

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Hello Rusty, <br><br>I&#39;have just started to read the code (and I&#39;m not an expert kernel programmer), but is this condition ok ?<br><br><br>(function setup_pagetables(), on file Documentation/lguest.c )<br><br>&nbsp;&nbsp;&nbsp; /* Ideally we map all physical memory starting at page_offset.
<br>&nbsp;&nbsp;&nbsp; &nbsp;* However, if page_offset is 0xC0000000 we can only map 1G of physical<br>&nbsp;&nbsp;&nbsp; &nbsp;* (0xC0000000 + 1G overflows). */<br><br>&nbsp;&nbsp;&nbsp; if (mem &gt; -page_offset)<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mapped_pages = mem/getpagesize();<br>&nbsp;&nbsp;&nbsp; else<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; mapped_pages = -page_offset/getpagesize();
<br><br><br><br>Cheers<br><br>Matias<br>

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