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vfio/mlx5: Check whether VF is migratable

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Add a check whether VF is migratable. Only if VF is migratable, mark the
VFIO device as migration capable.

Signed-off-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Yishai Hadas <yishaih@nvidia.com>
Link: https://lore.kernel.org/r/20230124144955.139901-2-yishaih@nvidia.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Shay Drory 2023-01-24 16:49:53 +02:00 committed by Alex Williamson
parent e951eaaf83
commit caf094b5a1
2 changed files with 28 additions and 0 deletions
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27
drivers/vfio/pci/mlx5/cmd.c
View File

@ -7,6 +7,29 @@
enum { CQ_OK = 0, CQ_EMPTY = -1, CQ_POLL_ERR = -2 };
static int mlx5vf_is_migratable(struct mlx5_core_dev *mdev, u16 func_id)
{
int query_sz = MLX5_ST_SZ_BYTES(query_hca_cap_out);
void *query_cap = NULL, *cap;
int ret;
query_cap = kzalloc(query_sz, GFP_KERNEL);
if (!query_cap)
return -ENOMEM;
ret = mlx5_vport_get_other_func_cap(mdev, func_id, query_cap,
MLX5_CAP_GENERAL_2);
if (ret)
goto out;
cap = MLX5_ADDR_OF(query_hca_cap_out, query_cap, capability);
if (!MLX5_GET(cmd_hca_cap_2, cap, migratable))
ret = -EOPNOTSUPP;
out:
kfree(query_cap);
return ret;
}
static int mlx5vf_cmd_get_vhca_id(struct mlx5_core_dev *mdev, u16 function_id,
u16 *vhca_id);
static void
@ -195,6 +218,10 @@ void mlx5vf_cmd_set_migratable(struct mlx5vf_pci_core_device *mvdev,
if (mvdev->vf_id < 0)
goto end;
ret = mlx5vf_is_migratable(mvdev->mdev, mvdev->vf_id + 1);
if (ret)
goto end;
if (mlx5vf_cmd_get_vhca_id(mvdev->mdev, mvdev->vf_id + 1,
&mvdev->vhca_id))
goto end;

1
drivers/vfio/pci/mlx5/cmd.h
View File

@ -9,6 +9,7 @@
#include <linux/kernel.h>
#include <linux/vfio_pci_core.h>
#include <linux/mlx5/driver.h>
#include <linux/mlx5/vport.h>
#include <linux/mlx5/cq.h>
#include <linux/mlx5/qp.h>