Xen devel - Jan 2013 - confusion on ept mechanism

I still have some doubt when analying XEN paging mechanism of EPT.
When run into ept_handle_violation,how to find the HPA relevant to the GPA
not mapped in EPT table yet,from m2p table？



	Looking forward any help,source level answer will be appreciated!

								yangbin


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On Fri, Jan 11, 2013 at 1:39 AM, <yang.bin18@zte.com.cn> wrote:
>
>         I still have some doubt when analying XEN paging mechanism of EPT.
> When run into ept_handle_violation,how to find the HPA relevant to the GPA
> not mapped in EPT table yet,from m2p table？
>
I presume you mean the p2m table?  (m2p would map HPA->GPA, not GPA->HPA).

The answer is, when using ept, the ept table *is* the p2m table.  So
there''s no such thing as a GPA->HPA mapping that is in the p2m table
but
not in the ept tables.

 -George


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