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[XenARM] Question regarding the page type...


  • To: "xen-arm@xxxxxxxxxxxxxxxxxxx" <xen-arm@xxxxxxxxxxxxxxxxxxx>
  • From: ROSSIER Daniel <Daniel.Rossier@xxxxxxxxxx>
  • Date: Thu, 3 Sep 2009 14:12:55 +0200
  • Accept-language: fr-FR, en-US
  • Acceptlanguage: fr-FR, en-US
  • Delivery-date: Thu, 03 Sep 2009 05:16:10 -0700
  • List-id: Xen ARM development <xen-arm.lists.xensource.com>
  • Thread-index: Acosj94yPpM7NksTSH+sYxS9yKToDA==
  • Thread-topic: Question regarding the page type...

Hello,

 

Can anybody confirm the following:

 

The page type <count> field (which is used in the type_info structure to maintain the number of references on a physical page with a certain type) is "reset" to 0 during the granting operation. I saw that the count field is put to 1 (actually incremented by 1 when calling get_page_type()), and already during the setup of guest page table in construct_dom0() function.

I'm not using the granting mechanism right now, and I need to perform a put_page_type() right after the setup_pg_table() call. I just wanted to make sure to be on the right way.

 

Thanks for any input

Daniel

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