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([2001:b07:6468:f312:cde8:2463:95a9:1d81]) by smtp.gmail.com with ESMTPSA id i5sm497310wrv.34.2019.12.17.16.00.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 17 Dec 2019 16:00:55 -0800 (PST) Subject: Re: [RFC v4 PATCH 00/49] Initial support of multi-process qemu - status update To: Felipe Franciosi , Stefan Hajnoczi References: <20191210064716.GA6401@flaka> <20191213104116.GB1180977@stefanha-x1.localdomain> <20191216194655.GA5922@flaka> <20191217163316.GB1333385@stefanha-x1.localdomain> From: Paolo Bonzini Message-ID: <4a302c6d-e2c8-0c3e-43d2-946e1fafea5d@redhat.com> Date: Wed, 18 Dec 2019 01:00:55 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-MC-Unique: Dpl4NmS0MrCWqNXUpdOUTg-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Elena Ufimtseva , "fam@euphon.net" , Swapnil Ingle , "john.g.johnson@oracle.com" , "qemu-devel@nongnu.org" , "kraxel@redhat.com" , "jag.raman@oracle.com" , "quintela@redhat.com" , "mst@redhat.com" , "armbru@redhat.com" , "kanth.ghatraju@oracle.com" , "thuth@redhat.com" , "ehabkost@redhat.com" , "konrad.wilk@oracle.com" , "dgilbert@redhat.com" , "liran.alon@oracle.com" , "rth@twiddle.net" , "kwolf@redhat.com" , "berrange@redhat.com" , "mreitz@redhat.com" , "ross.lagerwall@citrix.com" , "marcandre.lureau@gmail.com" , Thanos Makatos Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 17/12/19 23:57, Felipe Franciosi wrote: > Doing it in userspace was the flow we proposed back in last year's KVM > Forum (Edinburgh), but it got turned down. I think the time since then has shown that essentially the cat is out of the bag. I didn't really like the idea of devices outside QEMU---and I still don't---but if something like "VFIO over AF_UNIX" turns out to be the cleanest way to implement multi-process QEMU device models, I am not going to pull an RMS and block that from happening. Assuming I could even do so! Paolo