From mboxrd@z Thu Jan  1 00:00:00 1970
From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: Re: blktap: Sync with XCP, dropping zero-copy.
Date: Tue, 16 Nov 2010 11:11:33 -0500
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References: <1289604707-13378-1-git-send-email-daniel.stodden@citrix.com>
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Cc: Jeremy Fitzhardinge <jeremy@goop.org>, "Xen-devel@lists.xensource.com" <Xen-devel@lists.xensource.com>, Daniel Stodden <daniel.stodden@citrix.com>
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> I backported the upstream xen_disk implementation to qemu-xen
> and run a test on the upstream 2.6.37rc1 kernel as dom0: VMs boot fine
> and performances seem to be interesting.  For the moment I am thinking

Can you quantify "interesting"?  As in sucks-but-I-can-live-with-it or
wow-it-is-as-fast-as-kernel-blkback? Or should ask this question later
when you had a chance to run proper benchmarks?