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OvmfPkg/VirtioGpuDxe: negotiate VIRTIO_F_IOMMU_PLATFORM

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VirtioGpuDxe is now IOMMU-clean; it translates system memory addresses to
bus master device addresses. Negotiate VIRTIO_F_IOMMU_PLATFORM in parallel
with VIRTIO_F_VERSION_1. (Note: the VirtIo GPU device, and this driver,
are virtio-1.0 only (a.k.a. "modern-only").)

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Brijesh Singh <brijesh.singh@amd.com>
This commit is contained in:
Laszlo Ersek 2017-08-27 00:56:59 +02:00
parent f10ae92366
commit db52890926
1 changed files with 1 additions and 1 deletions
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2
OvmfPkg/VirtioGpuDxe/Commands.c
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@ -90,7 +90,7 @@ VirtioGpuInit (
//
// We only want the most basic 2D features.
//
Features &= VIRTIO_F_VERSION_1;
Features &= VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM;
//
// ... and write the subset of feature bits understood by the [...] driver to