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[Xen-devel] Is there data copy between dom0 and domU

To: xen-devel@xxxxxxxxxxxxx
From: xu cong <congxumail@xxxxxxxxx>
Date: Wed, 23 Apr 2014 12:06:51 -0400
Cc: Wei Liu <wei.liu2@xxxxxxxxxx>
Delivery-date: Wed, 23 Apr 2014 16:07:04 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

When applications running in domU receive/send data from/to network, is there data copy via shared memory between dom0 and domU? Or the zero copy is used. How about the disk I/O operations? Thanks.

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