On 08/25/17 23:43, Brijesh Singh wrote: > VirtioBlkDxe 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]> > --- > OvmfPkg/VirtioBlkDxe/VirtioBlk.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c > b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c > index ab69cb08a625..3c4d9dfd4d54 100644 > --- a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c > +++ b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c > @@ -825,7 +825,8 @@ VirtioBlkInit ( > } > > Features &= VIRTIO_BLK_F_BLK_SIZE | VIRTIO_BLK_F_TOPOLOGY | > VIRTIO_BLK_F_RO | > - VIRTIO_BLK_F_FLUSH | VIRTIO_F_VERSION_1; > + VIRTIO_BLK_F_FLUSH | VIRTIO_F_VERSION_1 | > + VIRTIO_F_IOMMU_PLATFORM; > > // > // In virtio-1.0, feature negotiation is expected to complete before queue > @@ -903,7 +904,7 @@ VirtioBlkInit ( > // step 5 -- Report understood features. > // > 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; >
Reviewed-by: Laszlo Ersek <[email protected]> _______________________________________________ edk2-devel mailing list [email protected] https://lists.01.org/mailman/listinfo/edk2-devel
