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Re: [Xen-devel] [RFC][Patches] Xen 1GB Page Table Support

To: Gianluca Guida <glguida@xxxxxxxxx>
Subject: Re: [Xen-devel] [RFC][Patches] Xen 1GB Page Table Support
From: George Dunlap <george.dunlap@xxxxxxxxxxxxx>
Date: Fri, 20 Mar 2009 14:25:51 +0000
Cc: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, Wei Huang <wei.huang2@xxxxxxx>, Gianluca Guida <Gianluca.Guida@xxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>
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Gianluca Guida wrote:
Changing the p2m of course won't help in the shadow pagetables case. :/
No, but it seems to me that 1G p2m entries can't hurt performance for shadows either, which is the question Dan was raising.

It might be nice to have some quick "sanity check" benchmarks, just to make sure that adding the 1G pages won't hurt performance for the normal case...


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