Author: hselasky
Date: Tue Feb 13 15:14:32 2018
New Revision: 329211
URL: https://svnweb.freebsd.org/changeset/base/329211
Log:
MFC r325652:
Prevent mlx5 core from accessing host memory after shutdown by disabling
PCI busmaster.
Sponsored by: Mellanox Technologies
Modified:
stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c
Directory Properties:
stable/11/ (props changed)
Modified: stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c
==============================================================================
--- stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Tue Feb 13 15:13:43
2018 (r329210)
+++ stable/11/sys/dev/mlx5/mlx5_core/mlx5_main.c Tue Feb 13 15:14:32
2018 (r329211)
@@ -1134,6 +1134,12 @@ static void remove_one(struct pci_dev *pdev)
kfree(dev);
}
+static void shutdown_one(struct pci_dev *pdev)
+{
+ /* prevent device from accessing host memory after shutdown */
+ pci_clear_master(pdev);
+}
+
static const struct pci_device_id mlx5_core_pci_table[] = {
{ PCI_VDEVICE(MELLANOX, 4113) }, /* Connect-IB */
{ PCI_VDEVICE(MELLANOX, 4114) }, /* Connect-IB VF */
@@ -1175,6 +1181,7 @@ MODULE_DEVICE_TABLE(pci, mlx5_core_pci_table);
static struct pci_driver mlx5_core_driver = {
.name = DRIVER_NAME,
.id_table = mlx5_core_pci_table,
+ .shutdown = shutdown_one,
.probe = init_one,
.remove = remove_one
};
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