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Re: [Xen-devel] Re: Poor performance on HVM (kernbench)

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: Poor performance on HVM (kernbench)
From: John Levon <levon@xxxxxxxxxxxxxxxxx>
Date: Thu, 11 Sep 2008 21:24:04 +0100
Cc: Muli Ben-Yehuda <MULI@xxxxxxxxxx>, deshantm@xxxxxxxxx, Gianluca Guida <gianluca.guida@xxxxxxxxxxxxx>, xen-devel mailing list <xen-devel@xxxxxxxxxxxxxxxxxxx>, George Dunlap <dunlapg@xxxxxxxxx>, Anthony Liguori <aliguori@xxxxxxxxxx>
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On Thu, Sep 11, 2008 at 01:02:51PM -0700, Jeremy Fitzhardinge wrote:

> > To the best of my knowledge, I am not using PV on HVM drivers since
> > they are not upstream.
> > I am using 2.6.27-rc4 xen domU kernel, with the normal xen PV drivers
> > and KVM virtio built in.
> > Am I mistaken?
> >   
> No, there's no pv-hvm driver support upstream yet.  When I get around to
> it I intend adding support for the pagetable shootdown
> paravirtualization too, so that unshadowing shouldn't be a problem.

Hmm, this came up recently, but I don't remember seeing this. Sounds
interesting, is there somewhere we can read more?


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