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Prevent mlx5 core from accessing host memory after shutdown by disabling

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PCI busmaster.

Sponsored by:	Mellanox Technologies
MFC after:	1 week
This commit is contained in:
Hans Petter Selasky 2017-11-10 13:40:27 +00:00
parent 197563c294
commit 0e4248a114
1 changed files with 7 additions and 0 deletions
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7
sys/dev/mlx5/mlx5_core/mlx5_main.c
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@ -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
};