netdev - Re: [PATCH V1 mlx5-next 13/13] vfio/mlx5: Trap device RESET and update state accordingly

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Message-ID: <20211013180651.GM2744544@nvidia.com>
Date:   Wed, 13 Oct 2021 15:06:51 -0300
From:   Jason Gunthorpe <jgg@...dia.com>
To:     Yishai Hadas <yishaih@...dia.com>
Cc:     alex.williamson@...hat.com, bhelgaas@...gle.com, saeedm@...dia.com,
        linux-pci@...r.kernel.org, kvm@...r.kernel.org,
        netdev@...r.kernel.org, kuba@...nel.org, leonro@...dia.com,
        kwankhede@...dia.com, mgurtovoy@...dia.com, maorg@...dia.com
Subject: Re: [PATCH V1 mlx5-next 13/13] vfio/mlx5: Trap device RESET and
 update state accordingly

On Wed, Oct 13, 2021 at 12:47:07PM +0300, Yishai Hadas wrote:
> Trap device RESET and update state accordingly, it's done by registering
> the matching callbacks.
> 
> Signed-off-by: Yishai Hadas <yishaih@...dia.com>
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
>  drivers/vfio/pci/mlx5/main.c | 17 ++++++++++++++++-
>  1 file changed, 16 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/vfio/pci/mlx5/main.c b/drivers/vfio/pci/mlx5/main.c
> index e36302b444a6..8fe44ed13552 100644
> +++ b/drivers/vfio/pci/mlx5/main.c
> @@ -613,6 +613,19 @@ static const struct vfio_device_ops mlx5vf_pci_ops = {
>  	.match = vfio_pci_core_match,
>  };
>  
> +static void mlx5vf_reset_done(struct vfio_pci_core_device *core_vdev)
> +{
> +	struct mlx5vf_pci_core_device *mvdev = container_of(
> +			core_vdev, struct mlx5vf_pci_core_device,
> +			core_device);
> +
> +	mvdev->vmig.vfio_dev_state = VFIO_DEVICE_STATE_RUNNING;

This should hold the state mutex too

Jason