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[Xen-devel] Re: Overcommitting memory (was: Disable auto-balloon on ia64

To: "Charles Coffing" <ccoffing@xxxxxxxxxx>
Subject: [Xen-devel] Re: Overcommitting memory (was: Disable auto-balloon on ia64)
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: 2006年5月22日 16:17:05 +0100
Cc: Kevin Tian <kevin.tian@xxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Alex Williamson <alex.williamson@xxxxxx>, xen-ia64-devel <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>
Delivery-date: 2006年5月22日 08:17:25 -0700
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On 22 May 2006, at 16:12, Charles Coffing wrote:
In shadow32.c, I see a FIXME comment that refers to "shadow flush".
Even if such things are done, can you put an upper limit on the runtime
memory overhead for an HVM domain?
Yes, it ought to be a space/time tradeoff. The shadow pagetables should be regarded merely as a cache. However, the current shadow mode's memory handling sucks.
 -- Keir
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