Re: [Xen-devel] Page table and memory management

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 3 Mar 2005, at 03:07, Richard wrote:

> How do I create a new page table ?
> How do I register a page frame that I own with XEN so that I can use
> it as a page table ?
Xen will automatically infer the type when you attach an L1 to an 
existing L2. Xen will infer the L2 type when the L2 gets used as 
current pagetable base.
There are also mmu_op calls to pin a page to L1 or L2 type. This is 
particularly important for L2 pages to get good performance.
Before a page has pagetable type you can have a writable mapping of it 
and initiaqlise it directly. When Xen infers the pagetable type or you 
pin it to such a type, you must already have relinuqished and writable 
mappings you had of that page.
 -- Keir




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