From mboxrd@z Thu Jan 1 00:00:00 1970 From: AP Xen Subject: Question about xc_translate_foreign_address() Date: Tue, 24 May 2011 21:47:51 -0700 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org I have a question about xc_translate_foreign_address(). When this call is issued for VCPU1 in a 2 VCPU guest where VCPU1 is in a paused state and VCPU0 is active, there is a possibility that VCPU0 could change the page tables that VCPU1 is using. There is a window where the function could return incorrect information. Is this true or there is something that prevents it from happening? Thanks, AP