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Re: [Xen-devel] [PATCH] replace rdtsc emulation-vs-native xen boot option with per-domain (hypervisor part)

To: Dan Magenheimer <dan.magenheimer@xxxxxxxxxx>
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Tue, 29 Sep 2009 10:24:17 -0700
Cc: Ian Pratt <Ian.Pratt@xxxxxxxxxxxxx>, "Xen-Devel \(E-mail\)" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <Keir.Fraser@xxxxxxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>
Delivery-date: Tue, 29 Sep 2009 10:24:37 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 09/28/09 20:13, Dan Magenheimer wrote:
> So I believe, for rdtsc, correctness is more important
> than a small amount of performance.
>   

So run the apps in an HVM domain, where emulating everything is
appropriate, and leave PV domains alone.

    J

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References:
- RE: [Xen-devel] [PATCH] replace rdtsc emulation-vs-native xen boot option with per-domain (hypervisor part)
  - From: Dan Magenheimer

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