diff options
| -rw-r--r-- | drivers/pci/controller/vmd.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index 1b3e94a96414..1979fc5eac27 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -6,6 +6,7 @@ #include <linux/device.h> #include <linux/interrupt.h> +#include <linux/iommu.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> @@ -765,7 +766,8 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features) * acceptable because the guest is usually CPU-limited and MSI * remapping doesn't become a performance bottleneck. */ - if (!(features & VMD_FEAT_CAN_BYPASS_MSI_REMAP) || + if (iommu_capable(vmd->dev->dev.bus, IOMMU_CAP_INTR_REMAP) || + !(features & VMD_FEAT_CAN_BYPASS_MSI_REMAP) || offset[0] || offset[1]) { ret = vmd_alloc_irqs(vmd); if (ret) |