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From: Paolo Bonzini <pbonzini@redhat.com>
To: Tiwei Bie <tiwei.bie@intel.com>, Jason Wang <jasowang@redhat.com>
Cc: mst@redhat.com, alex.williamson@redhat.com, ddutile@redhat.com,
	alexander.h.duyck@intel.com, virtio-dev@lists.oasis-open.org,
	linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, dan.daly@intel.com,
	cunming.liang@intel.com, zhihong.wang@intel.com,
	jianfeng.tan@intel.com, xiao.w.wang@intel.com
Subject: Re: [virtio-dev] Re: [RFC] vhost: introduce mdev based hardware vhost backend
Date: Tue, 10 Apr 2018 09:51:43 +0200	[thread overview]
Message-ID: <7ee31a12-a370-fc43-82a6-2235f598e970@redhat.com> (raw)
In-Reply-To: <20180410045723.rftsb7l4l3ip2ioi@debian>

On 10/04/2018 06:57, Tiwei Bie wrote:
>> So you just move the abstraction layer from qemu to kernel, and you still
>> need different drivers in kernel for different device interfaces of
>> accelerators. This looks even more complex than leaving it in qemu. As you
>> said, another idea is to implement userspace vhost backend for accelerators
>> which seems easier and could co-work with other parts of qemu without
>> inventing new type of messages.
> 
> I'm not quite sure. Do you think it's acceptable to
> add various vendor specific hardware drivers in QEMU?

I think so.  We have vendor-specific quirks, and at some point there was
an idea of using quirks to implement (vendor-specific) live migration
support for assigned devices.

Paolo

  parent reply	other threads:[~2018-04-10  7:53 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-04-02 15:23 Tiwei Bie
2018-04-10  2:52 ` Jason Wang
2018-04-10  4:57   ` Tiwei Bie
2018-04-10  7:25     ` Jason Wang
2018-04-19 18:40       ` Michael S. Tsirkin
2018-04-20  3:28         ` Tiwei Bie
2018-04-20  3:50           ` Michael S. Tsirkin
2018-04-20  3:50           ` Liang, Cunming
2018-04-20 13:52             ` Michael S. Tsirkin
2018-04-20  3:52         ` Jason Wang
2018-04-20 14:12           ` Michael S. Tsirkin
2018-04-10  7:51     ` Paolo Bonzini [this message]
2018-04-10  9:23       ` [virtio-dev] " Liang, Cunming
2018-04-10 13:36         ` Michael S. Tsirkin
2018-04-10 14:23           ` Liang, Cunming
2018-04-11  1:38             ` Tian, Kevin
2018-04-11  2:18             ` Jason Wang
2018-04-11  2:01         ` Stefan Hajnoczi
2018-04-11  2:08         ` Jason Wang

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