VirtioNetDxe driver has been updated to use IOMMU-like member functions from VIRTIO_DEVICE_PROTOCOL to translate the system physical address to device address. 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 <[email protected]> Cc: Jordan Justen <[email protected]> Cc: Tom Lendacky <[email protected]> Cc: Laszlo Ersek <[email protected]> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Brijesh Singh <[email protected]> Reviewed-by: Laszlo Ersek <[email protected]> --- 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 ffb3deefe00c..9dff04ce6071 100644 --- a/OvmfPkg/VirtioNetDxe/SnpInitialize.c +++ b/OvmfPkg/VirtioNetDxe/SnpInitialize.c @@ -562,7 +562,8 @@ 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 @@ -602,7 +603,7 @@ 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; -- 2.9.5 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
