Hi...

On Jan 22, 2008 1:19 AM, GoatZilla <[EMAIL PROTECTED]> wrote:
> I'm having trouble figuring out what this define is really supposed to refer
> to.  From the comments in the arch files, it seems to indicate a file offset
> for pages that aren't present.  What I don't understand is the number of
> bits it's usually set to -- 28 or 29.  This seems to be too many bits to
> actually fit in a typical 32-bit PTE along with the type and present bits.

After reading http://pdos.csail.mit.edu/6.828/2004/readings/i386/s05_02.htm
at a glance, seems like it's possible. Maybe it assumes P=0 (not
present), thus the rest of the bits are available. it is used as the
indicator for page fault handler...as we all know.

People, CMIIW.

regards,

Mulyadi.

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