Re: [Xen-devel] L1 page tables and get_pfn_type_batch()

[Jacob Gorm Hansen <jacobg@xxxxxxx>]

Aaron J. Marks wrote:
> hi all,
> 
> i have two questions regarding the page tables of domains.
> 
> 1. get_pfn_type_batch() seems to have a single-page limit. ie, trying to
> get pfn types for an array larger than a page fails. why the restriction?
> 
> 2. L1 page tables seem to contain mfns of not only L2 pages, but "normal"
> pages as well. can anyone explain this?

I am just guessing, but perhaps you are confusing Xen's (weird) notion
of what is L1 and what is L2. In Xen, the top-level page directory
(assuming two-level page tables) is considered L2, and the leaf page
tables are considered L1.

Jacob

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