OvmfPkg/VirtioBlkDxe: negotiate VIRTIO_F_IOMMU_PLATFORM

[mirror_edk2.git] / OvmfPkg / VirtioBlkDxe / VirtioBlk.c

diff --git a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c
index c9c42aa41243b234a66726f52391ab0993128e59..6abd937f86c6c2c677d04b2652b465d0568937e1 100644 (file)
--- a/OvmfPkg/VirtioBlkDxe/VirtioBlk.c
+++ b/OvmfPkg/VirtioBlkDxe/VirtioBlk.c
@@ -808,7 +808,8 @@ VirtioBlkInit (
   }\r
 \r
   Features &= VIRTIO_BLK_F_BLK_SIZE | VIRTIO_BLK_F_TOPOLOGY | VIRTIO_BLK_F_RO |\r
-              VIRTIO_BLK_F_FLUSH | VIRTIO_F_VERSION_1;\r
+              VIRTIO_BLK_F_FLUSH | VIRTIO_F_VERSION_1 |\r
+              VIRTIO_F_IOMMU_PLATFORM;\r
 \r
   //\r
   // In virtio-1.0, feature negotiation is expected to complete before queue\r
@@ -886,7 +887,7 @@ VirtioBlkInit (
   // step 5 -- Report understood features.\r
   //\r
   if (Dev->VirtIo->Revision < VIRTIO_SPEC_REVISION (1, 0, 0)) {\r
-    Features &= ~(UINT64)VIRTIO_F_VERSION_1;\r
+    Features &= ~(UINT64)(VIRTIO_F_VERSION_1 | VIRTIO_F_IOMMU_PLATFORM);\r
     Status = Dev->VirtIo->SetGuestFeatures (Dev->VirtIo, Features);\r
     if (EFI_ERROR (Status)) {\r
       goto UnmapQueue;\r