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[Xen-devel] Questions about ept

  • To: xen-devel@xxxxxxxxxxxxxxxxxxx
  • From: YAO <yffbrave@xxxxxxxxx>
  • Date: Thu, 9 Jun 2011 15:52:52 +0800
  • Delivery-date: Thu, 09 Jun 2011 00:53:30 -0700
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  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>

Hi,ÂI've been reading the code in xen/arch/x86/mm/hap and got some questions:

1. Are they the support for intel ept? If so, where is the support for amd rvi?

2. I read the intel manual, it says EPT paging is similar to IA-32e mode which has 4 level page. So, if the xen is running under 32bit PAE mode, is the ept paging still 4 levels?
by the way, is dom0 always 32bit pae?

3.EPT is used for GPA->HPA, so is the case of p2m(if I remember correctly), what's the relationship between them? why do we need p2m when we use hap?

4.Can I use ept to control access to some of the guest pages?

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