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[100.0.197.103]) by smtp.gmail.com with ESMTPSA id k9sm4403987qki.20.2019.05.31.14.05.27 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 31 May 2019 14:05:28 -0700 (PDT) Date: Fri, 31 May 2019 17:05:26 -0400 From: "Michael S. Tsirkin" To: Alex Williamson Message-ID: <20190531170437-mutt-send-email-mst@kernel.org> References: <20190530145645.tjwkgi4hae5yblsi@jenstp.localdomain> <20190530134631-mutt-send-email-mst@kernel.org> <20190530180022.GB2864@work-vm> <20190530140419-mutt-send-email-mst@kernel.org> <20190530182210.GA22103@habkost.net> <20190530190322-mutt-send-email-mst@kernel.org> <20190531170154.GB22103@habkost.net> <20190531135059-mutt-send-email-mst@kernel.org> <20190531184512.GN3169@work-vm> <20190531142933.248cbd17@x1.home> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190531142933.248cbd17@x1.home> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.160.195 Subject: Re: [Qemu-devel] [PATCH 3/4] net/virtio: add failover support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: pkrempa@redhat.com, berrange@redhat.com, Eduardo Habkost , aadam@redhat.com, qemu-devel@nongnu.org, "Dr. David Alan Gilbert" , laine@redhat.com, jdenemar@redhat.com, Jens Freimann , ailan@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, May 31, 2019 at 02:29:33PM -0600, Alex Williamson wrote: > I don't know what this frontend/backend rework would > look like for vfio-pci, but it seems non-trivial for this one use case > and I don't see that it adds any value outside of this use case, > perhaps quite the opposite, it's an overly complicated interface for > the majority of use cases so we either move to a more complicated > interface or maintain both. Poor choices either way. Well put Alex this is what I meant when I said it's a useless interface. I meant it only has a single use.