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Re: [Xen-devel] Page tables in Xen

  • To: "Haifeng He" <hehaifeng2nd@xxxxxxxxx>
  • From: weiming <zephyr.zhao@xxxxxxxxx>
  • Date: Wed, 28 Nov 2007 09:10:53 -0500
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Wed, 28 Nov 2007 06:11:32 -0800
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

In my understanding, in PV, page table is allocated within guest OS, however, every update will go through xen via explicit hypercalls.
in HVM, those update will be intercepted by xen.

Please correct me if I'm wrong.

On Nov 28, 2007 5:49 AM, Haifeng He <hehaifeng2nd@xxxxxxxxx> wrote:

I have a question about memory page tables in Xen. As far as I
understood, every modification
to page table will go through Xen(hypervisor). Is it so that all page
tables are actually allocated
in Xen(hypervisor) instead of guest OS(domain)? Also, is it the case
that Xen(hypervisor) needs to
maintain a page table for each process running in every domain?



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