[Xen-devel] a question on shared page

To:	"xen-devel" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject:	[Xen-devel] a question on shared page
From:	"CHEN KAI" <ckhust@xxxxxxxxx>
Date:	Mon, 14 Sep 2009 17:53:07 +0800
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Hello,

When i read a paper thi safternoon, i noticed a sentence witten as follows:

"We do not go for larger number of pages because the current Xen-3.0.4 allows at most 1K pages to be shared per VM. While this restriction can be fixed in the future, 16 page shared buffer will allow us to support up to 60 VMs per physical node with the current implementation."

it means that a VM can only shared 1K pages with other domains in Xen 3.0.4.

could somebody tell me which file defined the restriction, and in current version 3.4(or version 3.3/3.2) it is aslo a restriction or not.

Thanks very much.

2009-09-14

CHEN KAI

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[Xen-devel] a question on shared page