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[Xen-devel] One question to p2m type


  • To: Tim Deegan <Tim.Deegan@xxxxxxxxxx>
  • From: "Jiang, Yunhong" <yunhong.jiang@xxxxxxxxx>
  • Date: Mon, 28 Jun 2010 17:57:46 +0800
  • Accept-language: en-US
  • Acceptlanguage: en-US
  • Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 28 Jun 2010 03:01:39 -0700
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AcsWqFwVHsEVfcLxRyyodNoUUhIZng==
  • Thread-topic: One question to p2m type

Tim, one question to the p2m type.
As you reminded before, in PAE environment, p2m type can only hold 8 types in 
total, that means we should not have > p2m_grant_map_ro in p2m table. 

However, I didn't find any code to make sure this. For example, I didn't find 
any code to make sure mem_paging_domctl can't execut in PAE environment. Is it 
because p2m_change_type to >8 type will only impact guet itself, and we don't 
need to care for it?

Thanks
--jyh

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