Displaying 10 results from an estimated 10 matches for "get_backend_features".
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set_backend_features
2020 Sep 09
0
[PATCH] vhost: new vhost_vdpa SET/GET_BACKEND_FEATURES handlers
Hi Zhu,
url: https://github.com/0day-ci/linux/commits/Zhu-Lingshan/vhost-new-vhost_vdpa-SET-GET_BACKEND_FEATURES-handlers/20200909-115726
base: https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
config: parisc-randconfig-m031-20200909 (attached as .config)
compiler: hppa-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot...
2020 Sep 09
0
[PATCH] vhost: new vhost_vdpa SET/GET_BACKEND_FEATURES handlers
----- Original Message -----
> This commit introduced vhost_vdpa_set/get_backend_features() to
> resolve these issues:
> (1)In vhost_vdpa ioctl SET_BACKEND_FEATURES path, currect code
> would try to acquire vhost dev mutex twice
> (first shown in vhost_vdpa_unlocked_ioctl), which can lead
> to a dead lock issue.
> (2)SET_BACKEND_FEATURES was blindly added to vring ioct...
2023 Jul 03
0
[PATCH] vdpa: reject F_ENABLE_AFTER_DRIVER_OK if backend does not support it
On Mon, Jul 03, 2023 at 04:22:18PM +0200, Eugenio P?rez wrote:
> With the current code it is accepted as long as userland send it.
>
> Although userland should not set a feature flag that has not been
> offered to it with VHOST_GET_BACKEND_FEATURES, the current code will not
> complain for it.
>
> Since there is no specific reason for any parent to reject that backend
> feature bit when it has been proposed, let's control it at vdpa frontend
> level. Future patches may move this control to the parent driver.
>
> Fix...
2023 Jul 04
1
[PATCH] vdpa: reject F_ENABLE_AFTER_DRIVER_OK if backend does not support it
...> >
> > On Mon, Jul 03, 2023 at 04:22:18PM +0200, Eugenio P?rez wrote:
> > > With the current code it is accepted as long as userland send it.
> > >
> > > Although userland should not set a feature flag that has not been
> > > offered to it with VHOST_GET_BACKEND_FEATURES, the current code will not
> > > complain for it.
> > >
> > > Since there is no specific reason for any parent to reject that backend
> > > feature bit when it has been proposed, let's control it at vdpa frontend
> > > level. Future patches may move...
2023 Jul 04
1
[PATCH] mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
...gt;
>> #include <linux/auxiliary_bus.h>
>> #include <linux/mlx5/cq.h>
>> @@ -2499,6 +2500,11 @@ static void unregister_link_notifier(struct mlx5_vdpa_net *ndev)
>> flush_workqueue(ndev->mvdev.wq);
>> }
>>
>> +static u64 mlx5_vdpa_get_backend_features(const struct vdpa_device *vdpa)
>> +{
>> + return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK);
>> +}
>> +
>> static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features)
>> {
>> struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
&g...
2023 Jul 04
1
[PATCH] vdpa: reject F_ENABLE_AFTER_DRIVER_OK if backend does not support it
...at 04:22:18PM +0200, Eugenio P?rez wrote:
> > > > > With the current code it is accepted as long as userland send it.
> > > > >
> > > > > Although userland should not set a feature flag that has not been
> > > > > offered to it with VHOST_GET_BACKEND_FEATURES, the current code will not
> > > > > complain for it.
> > > > >
> > > > > Since there is no specific reason for any parent to reject that backend
> > > > > feature bit when it has been proposed, let's control it at vdpa frontend
> &...
2020 Sep 21
0
[PATCH 1/2] vhost: remove mutex ops in vhost_set_backend_features
..._features().
>
> Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com>
>
> I think you need to squash these two or reorder, we can't first
> make code racy then fix it up.
>
> OK, I will send a V2 series with Jason's fixes tomorrow (handle SET/GET_BACKEND_FEATURES in vhost_vdpa ioctl than vring ioctl).
>
> Thanks,
> BR
> Zhu Lingshan
this never materialized ...
>
>
> ---
> drivers/vhost/vhost.c | 2 --
> 1 file changed, 2 deletions(-)
>
> diff --git a/drivers/vhost/vhost.c b/drivers/vho...
2023 Jul 03
1
[PATCH] mlx5_vdpa: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
...nclude <linux/virtio_config.h>
> #include <linux/auxiliary_bus.h>
> #include <linux/mlx5/cq.h>
> @@ -2499,6 +2500,11 @@ static void unregister_link_notifier(struct mlx5_vdpa_net *ndev)
> flush_workqueue(ndev->mvdev.wq);
> }
>
> +static u64 mlx5_vdpa_get_backend_features(const struct vdpa_device *vdpa)
> +{
> + return BIT_ULL(VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK);
> +}
> +
> static int mlx5_vdpa_set_driver_features(struct vdpa_device *vdev, u64 features)
> {
> struct mlx5_vdpa_dev *mvdev = to_mvdev(vdev);
> @@ -3140,6 +3146,7 @@ static...
2023 Sep 03
1
[GIT PULL] virtio: features
...ht.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
----------------------------------------------------------------
Eugenio P?rez (4):
vdpa: add VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK flag
vdpa: accept VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK backend feature
vdpa: add get_backend_features vdpa operation
vdpa_sim: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
Jason Wang (1):
virtio_vdpa: build affinity masks conditionally
Xuan Zhuo (12):
virtio_ring: check use_dma_api before unmap desc for indirect
virtio_ring: put mapping error check in vring_map_one_sg...
2023 Sep 03
1
[GIT PULL] virtio: features
...ht.
Signed-off-by: Michael S. Tsirkin <mst at redhat.com>
----------------------------------------------------------------
Eugenio P?rez (4):
vdpa: add VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK flag
vdpa: accept VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK backend feature
vdpa: add get_backend_features vdpa operation
vdpa_sim: offer VHOST_BACKEND_F_ENABLE_AFTER_DRIVER_OK
Jason Wang (1):
virtio_vdpa: build affinity masks conditionally
Xuan Zhuo (12):
virtio_ring: check use_dma_api before unmap desc for indirect
virtio_ring: put mapping error check in vring_map_one_sg...