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vdpa/mlx5: Support creating resources with uid == 0

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Currently all resources must be created with uid != 0 which is essential
when userspace processes are allocating virtquueue resources. Since this
is a kernel implementation, it is perfectly legal to open resources with
uid == 0.

In case firmware supports, avoid allocating user context.

Signed-off-by: Eli Cohen <elic@nvidia.com>
Link: https://lore.kernel.org/r/20210531160404.31368-1-elic@nvidia.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Eli Cohen 2021-05-31 19:04:04 +03:00 • committed by Michael S. Tsirkin
parent 71ab6a7cfb
commit e13cd45d35
2 changed files with 9 additions and 1 deletions
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4
include/linux/mlx5/mlx5_ifc.h
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@ -1512,7 +1512,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 uar_4k[0x1];
u8 reserved_at_241[0x9];
u8 uar_sz[0x6];
u8 reserved_at_250[0x8];
u8 reserved_at_248[0x2];
u8 umem_uid_0[0x1];
u8 reserved_at_250[0x5];
u8 log_pg_sz[0x8];
u8 bf[0x1];