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Re: [Xen-devel] page_info structure in Xen

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: "Carol Gao" <carol.gao@xxxxxxxxxx>
  • Date: Wed, 9 Aug 2006 09:22:27 -0700
  • Delivery-date: Thu, 10 Aug 2006 01:52:47 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
> In the file xen/include/asm-x86/mm.h, a "page_info" structure is
> defined.  I am wondering when the PGT_type is set to be PGT_none and
> when it is set to be  PGT_writable_page?

It is set to PGT_writable_page when any guest has a writable mapping of that
page. If the page is read only then it has type PGT_none.


Thanks for the reply.

When the guest loads the executable object's or library's text section
into its pagecache, will the page_info be PGT_none or
PGT_writable_page?

Where can I find those functions that set the value of PGT_type?  Thanks a lot.

Carol

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