23 messages in com.xensource.lists.xen-develRE: [Xen-devel] PAE support revisited
FromSent OnAttachments
Nuutti Kotivuori21 Mar 2005 11:21 
Karen White21 Mar 2005 17:49 
James Harper21 Mar 2005 21:37 
Kip Macy21 Mar 2005 21:46 
James Harper21 Mar 2005 23:42 
Ian Pratt21 Mar 2005 23:59 
Ian Pratt22 Mar 2005 00:05 
Jacob Gorm Hansen22 Mar 2005 01:48 
Rik van Riel22 Mar 2005 04:29 
Ronald G. Minnich22 Mar 2005 06:51 
Ian Pratt22 Mar 2005 10:01 
Gerd Knorr22 Mar 2005 10:21 
Karen White22 Mar 2005 15:21 
Ian Pratt22 Mar 2005 15:56 
Nakajima, Jun23 Mar 2005 07:22 
Keir Fraser23 Mar 2005 08:26 
Nakajima, Jun23 Mar 2005 09:10 
Keir Fraser23 Mar 2005 09:19 
Karen White23 Mar 2005 15:23 
Ian Pratt23 Mar 2005 15:28 
Karen White29 Mar 2005 16:28 
Ian Pratt29 Mar 2005 23:29 
Gerd Knorr30 Mar 2005 02:20 
Subject:RE: [Xen-devel] PAE support revisited
From:James Harper (jame@bendigoit.com.au)
Date:03/21/2005 11:42:20 PM
List:com.xensource.lists.xen-devel

If xen and the guests all had PAE support enabled.

It doesn't matter how much physical memory the guest gets to play with it still needs to have 64-bit physical addresses in its page tables if the machine has PAE enabled.

So if xen is using PAE, all domains must also use PAE - it's a machine wide thing and not something that could be jumped between on the fly. Is that right? What I was hoping for was a mode where Xen might run using PAE but could set up memory access for the domains so that they wouldn't need to use PAE, provided their memory requirements didn't exceed 4G. But from what you are saying this just cannot be. Oh well.

Thanks.

James

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