identity mapped paging

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Subject: identity mapped paging
From: Vaibhav Jain <vjoss197@xxxxxxxxx>
Date: Wed, 11 Apr 2012 14:22:29 -0700

I am not clear about the use of identity mapped paging while paging is being enabled by the operating system. Also I don't understand at what point are the

identity mappings no longer useful.According to this article http://geezer.osdevbrasil.net/osd/mem/index.htm#identity - "The page table entries used to identity-map kernel memory can be deleted once paging and virtual addresses are enabled." Can somebody please explain?

Thanks

Vaibhav Jain

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