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[79.180.2.31]) by smtp.gmail.com with ESMTPSA id u17sm4059550ejr.59.2021.02.05.07.27.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Feb 2021 07:27:17 -0800 (PST) Date: Fri, 5 Feb 2021 10:27:14 -0500 From: "Michael S. Tsirkin" To: Jason Wang Subject: Re: [PATCH V3 17/19] vdpa: set the virtqueue num during register Message-ID: <20210205102552-mutt-send-email-mst@kernel.org> References: <20210104065503.199631-1-jasowang@redhat.com> <20210104065503.199631-18-jasowang@redhat.com> MIME-Version: 1.0 In-Reply-To: <20210104065503.199631-18-jasowang@redhat.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=mst@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Disposition: inline Cc: shahafs@mellanox.com, lulu@redhat.com, rdunlap@infradead.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org X-BeenThere: virtualization@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux virtualization List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: virtualization-bounces@lists.linux-foundation.org Sender: "Virtualization" On Mon, Jan 04, 2021 at 02:55:01PM +0800, Jason Wang wrote: > This patch delay the queue number setting to vDPA device > registering. This allows us to probe the virtqueue numbers between > device allocation and registering. > > Reviewed-by: Stefano Garzarella > Signed-off-by: Jason Wang Conflicts with other patches in the vhost tree. Can you rebase please? > --- > drivers/vdpa/ifcvf/ifcvf_main.c | 5 ++--- > drivers/vdpa/mlx5/net/mlx5_vnet.c | 5 ++--- > drivers/vdpa/vdpa.c | 8 ++++---- > drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 ++-- > include/linux/vdpa.h | 7 +++---- > 5 files changed, 13 insertions(+), 16 deletions(-) > > diff --git a/drivers/vdpa/ifcvf/ifcvf_main.c b/drivers/vdpa/ifcvf/ifcvf_main.c > index 8b4028556cb6..d65f3221d8ed 100644 > --- a/drivers/vdpa/ifcvf/ifcvf_main.c > +++ b/drivers/vdpa/ifcvf/ifcvf_main.c > @@ -438,8 +438,7 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) > } > > adapter = vdpa_alloc_device(struct ifcvf_adapter, vdpa, > - dev, &ifc_vdpa_ops, > - IFCVF_MAX_QUEUE_PAIRS * 2); > + dev, &ifc_vdpa_ops); > if (adapter == NULL) { > IFCVF_ERR(pdev, "Failed to allocate vDPA structure"); > return -ENOMEM; > @@ -463,7 +462,7 @@ static int ifcvf_probe(struct pci_dev *pdev, const struct pci_device_id *id) > for (i = 0; i < IFCVF_MAX_QUEUE_PAIRS * 2; i++) > vf->vring[i].irq = -EINVAL; > > - ret = vdpa_register_device(&adapter->vdpa); > + ret = vdpa_register_device(&adapter->vdpa, IFCVF_MAX_QUEUE_PAIRS * 2); > if (ret) { > IFCVF_ERR(pdev, "Failed to register ifcvf to vdpa bus"); > goto err; > diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c b/drivers/vdpa/mlx5/net/mlx5_vnet.c > index f1d54814db97..a1b9260bf04d 100644 > --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c > +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c > @@ -1958,8 +1958,7 @@ static int mlx5v_probe(struct auxiliary_device *adev, > max_vqs = MLX5_CAP_DEV_VDPA_EMULATION(mdev, max_num_virtio_queues); > max_vqs = min_t(u32, max_vqs, MLX5_MAX_SUPPORTED_VQS); > > - ndev = vdpa_alloc_device(struct mlx5_vdpa_net, mvdev.vdev, mdev->device, &mlx5_vdpa_ops, > - 2 * mlx5_vdpa_max_qps(max_vqs)); > + ndev = vdpa_alloc_device(struct mlx5_vdpa_net, mvdev.vdev, mdev->device, &mlx5_vdpa_ops); > if (IS_ERR(ndev)) > return PTR_ERR(ndev); > > @@ -1986,7 +1985,7 @@ static int mlx5v_probe(struct auxiliary_device *adev, > if (err) > goto err_res; > > - err = vdpa_register_device(&mvdev->vdev); > + err = vdpa_register_device(&mvdev->vdev, 2 * mlx5_vdpa_max_qps(max_vqs)); > if (err) > goto err_reg; > > diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c > index a69ffc991e13..ba89238f9898 100644 > --- a/drivers/vdpa/vdpa.c > +++ b/drivers/vdpa/vdpa.c > @@ -61,7 +61,6 @@ static void vdpa_release_dev(struct device *d) > * initialized but before registered. > * @parent: the parent device > * @config: the bus operations that is supported by this device > - * @nvqs: number of virtqueues supported by this device > * @size: size of the parent structure that contains private data > * > * Driver should use vdpa_alloc_device() wrapper macro instead of > @@ -72,7 +71,6 @@ static void vdpa_release_dev(struct device *d) > */ > struct vdpa_device *__vdpa_alloc_device(struct device *parent, > const struct vdpa_config_ops *config, > - int nvqs, > size_t size) > { > struct vdpa_device *vdev; > @@ -99,7 +97,6 @@ struct vdpa_device *__vdpa_alloc_device(struct device *parent, > vdev->index = err; > vdev->config = config; > vdev->features_valid = false; > - vdev->nvqs = nvqs; > > err = dev_set_name(&vdev->dev, "vdpa%u", vdev->index); > if (err) > @@ -122,11 +119,14 @@ EXPORT_SYMBOL_GPL(__vdpa_alloc_device); > * vdpa_register_device - register a vDPA device > * Callers must have a succeed call of vdpa_alloc_device() before. > * @vdev: the vdpa device to be registered to vDPA bus > + * @nvqs: number of virtqueues supported by this device > * > * Returns an error when fail to add to vDPA bus > */ > -int vdpa_register_device(struct vdpa_device *vdev) > +int vdpa_register_device(struct vdpa_device *vdev, int nvqs) > { > + vdev->nvqs = nvqs; > + > return device_add(&vdev->dev); > } > EXPORT_SYMBOL_GPL(vdpa_register_device); > diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c > index 6a90fdb9cbfc..b129cb4dd013 100644 > --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c > +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c > @@ -357,7 +357,7 @@ static struct vdpasim *vdpasim_create(void) > else > ops = &vdpasim_net_config_ops; > > - vdpasim = vdpa_alloc_device(struct vdpasim, vdpa, NULL, ops, VDPASIM_VQ_NUM); > + vdpasim = vdpa_alloc_device(struct vdpasim, vdpa, NULL, ops); > if (!vdpasim) > goto err_alloc; > > @@ -393,7 +393,7 @@ static struct vdpasim *vdpasim_create(void) > vringh_set_iotlb(&vdpasim->vqs[1].vring, vdpasim->iommu); > > vdpasim->vdpa.dma_dev = dev; > - ret = vdpa_register_device(&vdpasim->vdpa); > + ret = vdpa_register_device(&vdpasim->vdpa, VDPASIM_VQ_NUM); > if (ret) > goto err_iommu; > > diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h > index 30bc7a7223bb..d9e9d17b9083 100644 > --- a/include/linux/vdpa.h > +++ b/include/linux/vdpa.h > @@ -244,18 +244,17 @@ struct vdpa_config_ops { > > struct vdpa_device *__vdpa_alloc_device(struct device *parent, > const struct vdpa_config_ops *config, > - int nvqs, > size_t size); > > -#define vdpa_alloc_device(dev_struct, member, parent, config, nvqs) \ > +#define vdpa_alloc_device(dev_struct, member, parent, config) \ > container_of(__vdpa_alloc_device( \ > - parent, config, nvqs, \ > + parent, config, \ > sizeof(dev_struct) + \ > BUILD_BUG_ON_ZERO(offsetof( \ > dev_struct, member))), \ > dev_struct, member) > > -int vdpa_register_device(struct vdpa_device *vdev); > +int vdpa_register_device(struct vdpa_device *vdev, int nvqs); > void vdpa_unregister_device(struct vdpa_device *vdev); > > /** > -- > 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization