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 <[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]> --- OvmfPkg/VirtioRngDxe/VirtioRng.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/OvmfPkg/VirtioRngDxe/VirtioRng.c b/OvmfPkg/VirtioRngDxe/VirtioRng.c index 59f32d343179..32512d882f7d 100644 --- a/OvmfPkg/VirtioRngDxe/VirtioRng.c +++ b/OvmfPkg/VirtioRngDxe/VirtioRng.c @@ -278,7 +278,7 @@ VirtioRngInit ( goto Failed; } - Features &= VIRTIO_F_VERSION_1; + Features &= VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM; // // In virtio-1.0, feature negotiation is expected to complete before queue @@ -359,7 +359,7 @@ VirtioRngInit ( // step 5 -- Report understood features and guest-tuneables. // 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 UnmapQueue; -- 2.7.4 _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
