linux-kernel - Re: [PATCH vhost v4 04/15] vdpa: Accept VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN

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Date: Wed, 20 Dec 2023 17:11:55 +0100
From: Eugenio Perez Martin <eperezma@...hat.com>
To: Dragos Tatulea <dtatulea@...dia.com>
Cc: "Michael S . Tsirkin" <mst@...hat.com>, Jason Wang <jasowang@...hat.com>, 
	Si-Wei Liu <si-wei.liu@...cle.com>, Saeed Mahameed <saeedm@...dia.com>, 
	Leon Romanovsky <leon@...nel.org>, virtualization@...ts.linux-foundation.org, 
	Gal Pressman <gal@...dia.com>, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Parav Pandit <parav@...dia.com>, Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH vhost v4 04/15] vdpa: Accept VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND
 backend feature

On Tue, Dec 19, 2023 at 7:09 PM Dragos Tatulea <dtatulea@...dia.com> wrote:
>
> If userland sets this feature, allow it.
>
> Signed-off-by: Dragos Tatulea <dtatulea@...dia.com>
> Suggested-by: Eugenio Pérez <eperezma@...hat.com>

Acked-by: Eugenio Pérez <eperezma@...hat.com>

> ---
>  drivers/vhost/vdpa.c | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
> index da7ec77cdaff..2250fcd90e5b 100644
> --- a/drivers/vhost/vdpa.c
> +++ b/drivers/vhost/vdpa.c
> @@ -749,6 +749,7 @@ static long vhost_vdpa_unlocked_ioctl(struct file *filep,
>                                  BIT_ULL(VHOST_BACKEND_F_IOTLB_PERSIST) |
>                                  BIT_ULL(VHOST_BACKEND_F_SUSPEND) |
>                                  BIT_ULL(VHOST_BACKEND_F_RESUME) |
> +                                BIT_ULL(VHOST_BACKEND_F_CHANGEABLE_VQ_ADDR_IN_SUSPEND) |
>                                  BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK)))
>                         return -EOPNOTSUPP;
>                 if ((features & BIT_ULL(VHOST_BACKEND_F_SUSPEND)) &&
> --
> 2.43.0
>