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Date: Fri, 30 Dec 2016 08:46:51 +0800
From: Fam Zheng <famz@redhat.com>
Message-ID: <20161230004651.GA24498@lemon>
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Subject: Re: [Qemu-devel] [PATCH 0/4] RFC: A VFIO based block driver for
 NVMe device
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To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>, Kevin Wolf <kwolf@redhat.com>, "qemu-block@nongnu.org" <qemu-block@nongnu.org>, Max Reitz <mreitz@redhat.com>, "borntraeger@de.ibm.com" <borntraeger@de.ibm.com>, Stefan Hajnoczi <stefanha@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>, Karl Rister <krister@redhat.com>

On Thu, 12/29 04:09, Tian, Kevin wrote:
> is it a tradeoff between performance (better than linux-aio) and composability
> (snapshot and live migration which not supported by direct passthrough)?

Yes.

Fam