similar to: [PATCH vhost next 10/10] vdpa/mlx5: Add VDPA driver for supported mlx5 devices

On 2020/7/16 ??3:23, Eli Cohen wrote: > Add a front end VDPA driver that registers in the VDPA bus and provides > networking to a guest. The VDPA driver creates the necessary resources > on the VF it is driving such that data path will be offloaded. > > Notifications are being communicated through the driver. > > Currently, only VFs are supported. In subsequent patches we will

On Mon, Apr 3, 2023 at 2:47?PM Eli Cohen <elic at nvidia.com> wrote: > > > On 03/04/2023 8:01, Jason Wang wrote: > > On Sun, Apr 2, 2023 at 10:15?PM Eli Cohen <elic at nvidia.com> wrote: > >> Current code ignores link state updates if VIRTIO_NET_F_STATUS was not > >> negotiated. However, link state updates could be received before feature > >>

On 8/21/20 3:50 PM, Nathan Chancellor wrote: > Clang warns several times when building for 32-bit ARM along the lines > of: > > drivers/vdpa/mlx5/net/mlx5_vnet.c:1462:31: warning: shift count >= width > of type [-Wshift-count-overflow] > ndev->mvdev.mlx_features |= BIT(VIRTIO_F_VERSION_1); >

On Mon, Mar 20, 2023 at 10:01:05AM +0200, Eli Cohen wrote: > Current code ignores link state updates if VIRTIO_NET_F_STATUS was not > negotiated. However, link state updates could be received before feature > negotiation was completed , therefore causing link state events to be > lost, possibly leaving the link state down. > > Add code to detect if VIRTIO_NET_F_STATUS was set

On 2020/7/19 ??3:49, Eli Cohen wrote: > On Fri, Jul 17, 2020 at 04:57:29PM +0800, Jason Wang wrote: >>> Looks like checking intialized is enough. Will fix this. >>>>> + >>>>> +static void mlx5_vdpa_set_vq_ready(struct vdpa_device *vdev, u16 idx, bool ready) >>>>> +{ >>>>> + struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);

Clang warns several times when building for 32-bit ARM along the lines of: drivers/vdpa/mlx5/net/mlx5_vnet.c:1462:31: warning: shift count >= width of type [-Wshift-count-overflow] ndev->mvdev.mlx_features |= BIT(VIRTIO_F_VERSION_1); ^~~~~~~~~~~~~~~~~~~~~~~ This is related to the BIT macro, which uses an unsigned long literal,

Clang warns several times when building for 32-bit ARM along the lines of: drivers/vdpa/mlx5/net/mlx5_vnet.c:1462:31: warning: shift count >= width of type [-Wshift-count-overflow] ndev->mvdev.mlx_features |= BIT(VIRTIO_F_VERSION_1); ^~~~~~~~~~~~~~~~~~~~~~~ This is related to the BIT macro, which uses an unsigned long literal,

On 3/20/2023 4:49 AM, Eli Cohen wrote: > Extend the possible list for features that can be supported by firmware. > Note that different versions of firmware may or may not support these > features. The driver is made aware of them by querying the firmware. > > While doing this, improve the code so we use enum names instead of hard > coded numerical values. > > The new

Today, mlx5_vdpa gets started by preallocate 1:1 DMA mapping at device creation time, while this 1:1 mapping will be implicitly destroyed when the first .set_map call is invoked. Everytime when the .reset callback is invoked, any mapping left behind will be dropped then reset back to the initial 1:1 DMA mapping. In order to reduce excessive memory mapping cost during live migration, it is

On Wed, Mar 15, 2023 at 3:28?PM Eli Cohen <elic at nvidia.com> wrote: > > Extend the possible list for features that can be supported by firmware. > Note that different versions of firmware may or may not support these > features. The driver is made aware of them by querying the firmware. > > While doing this, improve the code so we use enum names instead of hard > coded

VDPA mlx5 accesses config space as native endian - this is wrong since it's a modern device and actually uses LE. It only supports modern guests so we could punt and just force LE, but let's use the full virtio APIs since people tend to copy/paste code, and this is not data path anyway. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- drivers/vdpa/mlx5/net/mlx5_vnet.c |

A firmware error is triggered when configuring a 9k MTU on the PF after switching to switchdev mode and then using a vdpa device with larger (1k) rings: mlx5_cmd_out_err: CREATE_GENERAL_OBJECT(0xa00) op_mod(0xd) failed, status bad resource(0x5), syndrome (0xf6db90), err(-22) This is due to the fact that the hw VQ size parameters are computed based on the umem_1/2/3_buffer_param_a/b capabilities

A VM with mlx5 vDPA has below warnings while being reset: vhost VQ 0 ring restore failed: -1: Resource temporarily unavailable (11) vhost VQ 1 ring restore failed: -1: Resource temporarily unavailable (11) We should allow userspace emulating the virtio device be able to get to vq's avail_index, regardless of vDPA device status. Save the index that was last seen when virtq was stopped, so

Otherwise the virtqueue object to instate could point to invalid address that was unmapped from the MTT: mlx5_core 0000:41:04.2: mlx5_cmd_out_err:782:(pid 8321): CREATE_GENERAL_OBJECT(0xa00) op_mod(0xd) failed, status bad parameter(0x3), syndrome (0x5fa1c), err(-22) Fixes: cae15c2ed8e6 ("vdpa/mlx5: Implement susupend virtqueue callback") Cc: Eli Cohen <elic at nvidia.com>

On Wed, Feb 15, 2023 at 9:31 AM Si-Wei Liu <si-wei.liu at oracle.com> wrote: > > Otherwise the virtqueue object to instate could point to invalid address > that was unmapped from the MTT: > > mlx5_core 0000:41:04.2: mlx5_cmd_out_err:782:(pid 8321): > CREATE_GENERAL_OBJECT(0xa00) op_mod(0xd) failed, status > bad parameter(0x3), syndrome (0x5fa1c), err(-22) > >

On 2/15/2023 8:48 PM, Jason Wang wrote: > On Wed, Feb 15, 2023 at 9:31 AM Si-Wei Liu <si-wei.liu at oracle.com> wrote: >> Otherwise the virtqueue object to instate could point to invalid address >> that was unmapped from the MTT: >> >> mlx5_core 0000:41:04.2: mlx5_cmd_out_err:782:(pid 8321): >> CREATE_GENERAL_OBJECT(0xa00) op_mod(0xd) failed, status

On 7/3/2023 8:46 AM, Michael S. Tsirkin wrote: > On Mon, Jul 03, 2023 at 04:25:14PM +0200, Eugenio P?rez wrote: >> Offer this backend feature as mlx5 is compatible with it. It allows it >> to do live migration with CVQ, dynamically switching between passthrough >> and shadow virtqueue. >> >> Signed-off-by: Eugenio P?rez <eperezma at redhat.com> > Same

On Thu, Sep 24, 2020 at 05:32:31PM +0300, Eli Cohen wrote: > Change core vdpa functionality into a loadbale module such that upcoming > block implementation will be able to use it. > > Signed-off-by: Eli Cohen <elic at nvidia.com> Why don't we merge this patch together with the block module? > --- > V0 --> V1: > Removed "default n" for configu options

On Tue, Sep 29, 2020 at 09:20:26AM +0300, Eli Cohen wrote: > On Mon, Sep 28, 2020 at 03:55:09PM -0400, Michael S. Tsirkin wrote: > > On Thu, Sep 24, 2020 at 05:32:31PM +0300, Eli Cohen wrote: > > > Change core vdpa functionality into a loadbale module such that upcoming > > > block implementation will be able to use it. > > > > > > Signed-off-by: Eli

On Tue, Sep 29, 2020 at 09:34:33AM +0300, Eli Cohen wrote: > On Tue, Sep 29, 2020 at 02:26:44AM -0400, Michael S. Tsirkin wrote: > > On Tue, Sep 29, 2020 at 09:20:26AM +0300, Eli Cohen wrote: > > > On Mon, Sep 28, 2020 at 03:55:09PM -0400, Michael S. Tsirkin wrote: > > > > On Thu, Sep 24, 2020 at 05:32:31PM +0300, Eli Cohen wrote: > > > > > Change core