diff options
Diffstat (limited to 'drivers/dma/idxd')
| -rw-r--r-- | drivers/dma/idxd/init.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c index 25cc947c6179..9687a24ff982 100644 --- a/drivers/dma/idxd/init.c +++ b/drivers/dma/idxd/init.c @@ -26,6 +26,10 @@ MODULE_VERSION(IDXD_DRIVER_VERSION); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Intel Corporation"); +static bool sva = true; +module_param(sva, bool, 0644); +MODULE_PARM_DESC(sva, "Toggle SVA support on/off"); + #define DRV_NAME "idxd" bool support_enqcmd; @@ -338,12 +342,14 @@ static int idxd_probe(struct idxd_device *idxd) idxd_device_init_reset(idxd); dev_dbg(dev, "IDXD reset complete\n"); - if (IS_ENABLED(CONFIG_INTEL_IDXD_SVM)) { + if (IS_ENABLED(CONFIG_INTEL_IDXD_SVM) && sva) { rc = idxd_enable_system_pasid(idxd); if (rc < 0) dev_warn(dev, "Failed to enable PASID. No SVA support: %d\n", rc); else set_bit(IDXD_FLAG_PASID_ENABLED, &idxd->flags); + } else if (!sva) { + dev_warn(dev, "User forced SVA off via module param.\n"); } idxd_read_caps(idxd); |