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Message-ID: <2f11f0c6744e40fe36b5a7429ceb7c88f0e8c91d.camel@nvidia.com>
Date: Thu, 5 Oct 2023 12:16:58 +0000
From: Dragos Tatulea <dtatulea@...dia.com>
To: "eperezma@...hat.com" <eperezma@...hat.com>
CC: "virtualization@...ts.linux-foundation.org"
<virtualization@...ts.linux-foundation.org>,
Gal Pressman <gal@...dia.com>,
"mst@...hat.com" <mst@...hat.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"jasowang@...hat.com" <jasowang@...hat.com>,
"xuanzhuo@...ux.alibaba.com" <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH vhost 15/16] vdpa/mlx5: Make iotlb helper functions more
generic
On Thu, 2023-10-05 at 12:14 +0200, Eugenio Perez Martin wrote:
> On Thu, Sep 28, 2023 at 6:50 PM Dragos Tatulea <dtatulea@...dia.com> wrote:
> >
> > They will be used in a followup patch.
> >
> > Signed-off-by: Dragos Tatulea <dtatulea@...dia.com>
> > ---
> > drivers/vdpa/mlx5/core/mr.c | 16 ++++++++--------
> > 1 file changed, 8 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/vdpa/mlx5/core/mr.c b/drivers/vdpa/mlx5/core/mr.c
> > index 3dee6d9bed6b..a4135c16b5bf 100644
> > --- a/drivers/vdpa/mlx5/core/mr.c
> > +++ b/drivers/vdpa/mlx5/core/mr.c
> > @@ -454,20 +454,20 @@ static void destroy_dma_mr(struct mlx5_vdpa_dev
> > *mvdev, struct mlx5_vdpa_mr *mr)
> > mlx5_vdpa_destroy_mkey(mvdev, mr->mkey);
> > }
> >
> > -static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct vhost_iotlb *src)
> > +static int dup_iotlb(struct vhost_iotlb *iotlb, struct vhost_iotlb *src)
>
> It would be great to move this patch to vhost/iotlb, especially
> because it can be reused by vdpa_sim. But it can be done on top for
> sure,
>
Ack. Will create a separate patch for this after the series.
Thanks,
Dragos
> Acked-by: Eugenio Pérez <eperezma@...hat.com>
>
> > {
> > struct vhost_iotlb_map *map;
> > u64 start = 0, last = ULLONG_MAX;
> > int err;
> >
> > if (!src) {
> > - err = vhost_iotlb_add_range(mvdev->cvq.iotlb, start, last,
> > start, VHOST_ACCESS_RW);
> > + err = vhost_iotlb_add_range(iotlb, start, last, start,
> > VHOST_ACCESS_RW);
> > return err;
> > }
> >
> > for (map = vhost_iotlb_itree_first(src, start, last); map;
> > map = vhost_iotlb_itree_next(map, start, last)) {
> > - err = vhost_iotlb_add_range(mvdev->cvq.iotlb, map->start,
> > map->last,
> > + err = vhost_iotlb_add_range(iotlb, map->start, map->last,
> > map->addr, map->perm);
> > if (err)
> > return err;
> > @@ -475,9 +475,9 @@ static int dup_iotlb(struct mlx5_vdpa_dev *mvdev, struct
> > vhost_iotlb *src)
> > return 0;
> > }
> >
> > -static void prune_iotlb(struct mlx5_vdpa_dev *mvdev)
> > +static void prune_iotlb(struct vhost_iotlb *iotlb)
> > {
> > - vhost_iotlb_del_range(mvdev->cvq.iotlb, 0, ULLONG_MAX);
> > + vhost_iotlb_del_range(iotlb, 0, ULLONG_MAX);
> > }
> >
> > static void destroy_user_mr(struct mlx5_vdpa_dev *mvdev, struct
> > mlx5_vdpa_mr *mr)
> > @@ -544,7 +544,7 @@ void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev
> > *mvdev)
> > for (int i = 0; i < MLX5_VDPA_NUM_AS; i++)
> > mlx5_vdpa_destroy_mr(mvdev, mvdev->mr[i]);
> >
> > - prune_iotlb(mvdev);
> > + prune_iotlb(mvdev->cvq.iotlb);
> > }
> >
> > static int _mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
> > @@ -596,8 +596,8 @@ int mlx5_vdpa_update_cvq_iotlb(struct mlx5_vdpa_dev
> > *mvdev,
> >
> > spin_lock(&mvdev->cvq.iommu_lock);
> >
> > - prune_iotlb(mvdev);
> > - err = dup_iotlb(mvdev, iotlb);
> > + prune_iotlb(mvdev->cvq.iotlb);
> > + err = dup_iotlb(mvdev->cvq.iotlb, iotlb);
> >
> > spin_unlock(&mvdev->cvq.iommu_lock);
> >
> > --
> > 2.41.0
> >
>
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