ASSERT (Dev->Snm.MediaPresentSupported ==\r
!!(Features & VIRTIO_NET_F_STATUS));\r
\r
- Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1;\r
+ Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1 |\r
+ VIRTIO_F_IOMMU_PLATFORM;\r
\r
//\r
// In virtio-1.0, feature negotiation is expected to complete before queue\r
// step 5 -- keep only the features we want\r
//\r
if (Dev->VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) {\r
- Features &= ~(UINT64)VIRTIO_F_VERSION_1;\r
+ Features &= ~(UINT64)(VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM);\r
Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo, Features);\r
if (EFI_ERROR (Status)) {\r
goto ReleaseTxRing;\r