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Re: [Xen-devel] Need information related to shadowing

To: Sameer Ahuja <sameer.ahuja@xxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Need information related to shadowing
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Wed, 15 Nov 2006 12:18:00 +0000
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On 15/11/06 12:09, "Sameer Ahuja" <sameer.ahuja@xxxxxxxxxxx> wrote:

> Your reply was useful but I have one more query - how this handling
> related to shadow tables is different between IA 32(x86_32) and EM64T
> (x86_64)? 
> 
> The thing is that with EM64T Intel Virtualization Technology comes into
> the picture and I think that it shifts a lot of responsibilities from
> Xen to the H/W level.

VT capability is orthogonal to whether Xen is built for x86_32 or x86_64.
There are 32-bit-only chips that support VT (e.g., the Core Duo chips) so
it's not limited to only EM64T chips running in 64-bit mode.

  -- Keir



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