In previous patches, we have implemented IOMMU-like member functions in VIRTIO_DEVICE_PROTOCOL to translate the physical address to bus address and virtio drivers are updated to use those member functions. We do not need to do anything special when VIRTIO_F_IOMMU_PLATFORM bit is present hence treat it in parallel with VIRTIO_F_VERSION_1.
Cc: Ard Biesheuvel <ard.biesheu...@linaro.org> Cc: Jordan Justen <jordan.l.jus...@intel.com> Cc: Tom Lendacky <thomas.lenda...@amd.com> Cc: Laszlo Ersek <ler...@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Brijesh Singh <brijesh.si...@amd.com> --- OvmfPkg/VirtioNetDxe/SnpInitialize.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/OvmfPkg/VirtioNetDxe/SnpInitialize.c b/OvmfPkg/VirtioNetDxe/SnpInitialize.c index 3d4eb70aa630..750cea10abe7 100644 --- a/OvmfPkg/VirtioNetDxe/SnpInitialize.c +++ b/OvmfPkg/VirtioNetDxe/SnpInitialize.c @@ -551,7 +551,8 @@ VirtioNetInitialize ( ASSERT (Dev->Snm.MediaPresentSupported == !!(Features & VIRTIO_NET_F_STATUS)); - Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1; + Features &= VIRTIO_NET_F_MAC | VIRTIO_NET_F_STATUS | VIRTIO_F_VERSION_1 | + VIRTIO_F_IOMMU_PLATFORM; // // In virtio-1.0, feature negotiation is expected to complete before queue @@ -591,7 +592,7 @@ VirtioNetInitialize ( // step 5 -- keep only the features we want // if (Dev->VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) { - Features &= ~(UINT64)VIRTIO_F_VERSION_1; + Features &= ~(UINT64)VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM; Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo, Features); if (EFI_ERROR (Status)) { goto ReleaseTxRing; -- 2.7.4 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel