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charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: BN0PR11MB5757.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: 030b649b-b968-400c-5553-08d973a828ed X-MS-Exchange-CrossTenant-originalarrivaltime: 09 Sep 2021 15:40:32.6455 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: pVqZvMOSwDRR4GdUbPUK7/Wf0j1eFGweL7qx/KDiLOOM1KApMA5jfzNfhAbt95yHVVTnqccVScnTP7X9gxVN+w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN7PR11MB2563 X-OriginatorOrg: intel.com Received-SPF: pass client-ip=192.55.52.88; envelope-from=chen.zhang@intel.com; helo=mga01.intel.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no 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: "eperezma@redhat.com" , "elic@nvidia.com" , "lulu@redhat.com" , "Zhu, Lingshan" , "gdawar@xilinx.com" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" > -----Original Message----- > From: Qemu-devel bounces+chen.zhang=3Dintel.com@nongnu.org> On Behalf Of Jason Wang > Sent: Tuesday, September 7, 2021 5:03 PM > To: mst@redhat.com; jasowang@redhat.com; qemu-devel@nongnu.org > Cc: eperezma@redhat.com; elic@nvidia.com; gdawar@xilinx.com; Zhu, > Lingshan ; lulu@redhat.com > Subject: [PATCH V3 00/10] vhost-vDPA multiqueue >=20 > Hi All: >=20 > This patch implements the multiqueue support for vhost-vDPA. The most > important requirement si the control virtqueue support. The virtio-net an= d Typo: S/si/is > vhost-net core are tweak to support control virtqueue as if what data que= ue > pairs are done: a dedicated vhost_net device which is coupled with the > NetClientState is intrdouced so most of the existing vhost codes could be > reused with minor changes. This means the control virtqueue will bypass t= he > Qemu. With the control virtqueue, vhost-vDPA are extend to support > creating and destroying multiqueue queue pairs plus the control virtqueue= . >=20 > For the future, if we want to support live migration, we can either do sh= adow > cvq on top or introduce new interfaces for reporting device states. >=20 > Tests are done via the vp_vdpa driver in L1 guest. >=20 > Changes since V2: >=20 > - rebase to qemu master > - use "queue_pairs" instead of "qps" > - typo fixes >=20 > Changes since V1: >=20 > - start and stop vhost devices when all queues were setup > - fix the case when driver doesn't support MQ but device support > - correctly set the batching capability to avoid a map/unmap storm > - various other tweaks >=20 > Jason Wang (10): > vhost-vdpa: open device fd in net_init_vhost_vdpa() > vhost-vdpa: classify one time request > vhost-vdpa: prepare for the multiqueue support > vhost-vdpa: let net_vhost_vdpa_init() returns NetClientState * > net: introduce control client > vhost-net: control virtqueue support > virtio-net: use "queue_pairs" instead of "queues" when possible > vhost: record the last virtqueue index for the virtio device > virtio-net: vhost control virtqueue support > vhost-vdpa: multiqueue support >=20 > hw/net/vhost_net.c | 55 ++++++++--- > hw/net/virtio-net.c | 165 ++++++++++++++++++--------------- > hw/virtio/vhost-vdpa.c | 56 +++++++++-- > include/hw/virtio/vhost-vdpa.h | 1 + > include/hw/virtio/vhost.h | 2 + > include/hw/virtio/virtio-net.h | 5 +- > include/net/net.h | 5 + > include/net/vhost_net.h | 6 +- > net/net.c | 24 ++++- > net/vhost-vdpa.c | 127 ++++++++++++++++++++++--- > 10 files changed, 328 insertions(+), 118 deletions(-) >=20 > -- > 2.25.1 >=20