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Fri, 15 May 2020 08:51:36 +0000 (UTC) Date: Fri, 15 May 2020 10:51:33 +0200 From: Cornelia Huck To: Thomas Huth Subject: Re: [PATCH 1/3] docs/s390x: document the virtual css Message-ID: <20200515105133.12ffb2be.cohuck@redhat.com> In-Reply-To: <7876d0f3-7bb9-38b9-6675-94ba6bd47a1a@redhat.com> References: <20200505135025.14614-1-cohuck@redhat.com> <20200505135025.14614-2-cohuck@redhat.com> <7876d0f3-7bb9-38b9-6675-94ba6bd47a1a@redhat.com> Organization: Red Hat GmbH MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=cohuck@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/14 23:27:07 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_PASS=-0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Fri, 15 May 2020 09:04:13 +0200 Thomas Huth wrote: > On 05/05/2020 15.50, Cornelia Huck wrote: > > +Examples > > +-------- > > + > > +* a virtio-net device, cssid/ssid/devno automatically assigned:: > > + > > + -device virtio-net-ccw > > + > > + In a Linux guest (without default devices and no other devices specified > > + prior to this one), this will show up as ``0.0.0000`` under subchannel > > + ``0.0.0000``. > > Maybe mention the QEMU side again, e.g. that when you run "info qtree" > in the HMP monitor, you see the device with dev_id = "fe.0.0000". Yes, that's a good idea. > > > +* a virtio-rng device in subchannel set ``0``:: > > + > > + -device virtio-rng-ccw,devno=fe.0.0042 > > + > > + If added to the same Linux guest as above, it would show up as ``0.0.0042`` > > + under subchannel ``0.0.0001``. > > Does "same" matter here? Otherwise, maybe just say "to a Linux guest" ? I wanted to provide the subchannel number in my examples as well. As QEMU always picks the first free one (and you cannot specify it manually), I wanted to make the examples build upon each other. > > > +* a virtio-gpu device in subchannel set ``2``:: > > + > > + -device virtio-gpu-ccw,devno=fe.2.1111 > > + > > + If added to the same Linux guest as above, it would show up as ``0.2.1111`` > > + under subchannel ``0.2.0000``. > > Dito. dito :) > > > +* a virtio-mouse device in a non-standard channel subsystem:: > > + > > + -device virtio-mouse-ccw,devno=2.0.2222 > > + > > + This would not show up in a standard Linux guest. > > Ok ... and what happens if you use devno=0.0.1234 ? Will that then show > up under fe.0.1234 in the guest?? That won't show up in the guest, either -- do you think I should add an example for that as well?