Messages in this thread | | | Date | Fri, 16 Mar 2007 10:19:40 +0100 | From | Ingo Molnar <> | Subject | Re: [patch 15/26] Xen-paravirt_ops: Add apply_to_page_range() which applies a function to a pte range. |
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* Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> Add a new mm function apply_to_page_range() which applies a given > function to every pte in a given virtual address range in a given mm > structure. This is a generic alternative to cut-and-pasting the Linux > idiomatic pagetable walking code in every place that a sequence of > PTEs must be accessed.
nice one! I suspect we could simplify some of the less performance-critical open-coded pagetable walker loops in the kernel with this? (i'm not even sure it's all that much of a performance loss to pass a function pointer around - would be nice to convert say mprotect() to this and see the performance difference?)
Acked-by: Ingo Molnar <mingo@elte.hu>
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