Since we don't enable IOMMU at all, we can then simply enable the IOMMU support by claiming the support of VIRITO_F_IOMMU_PLATFORM. This fixes booting failure when iommu_platform is set from qemu cli.
Signed-off-by: Jason Wang jasowang@redhat.com --- src/hw/virtio-blk.c | 3 ++- src/hw/virtio-ring.h | 1 + src/hw/virtio-scsi.c | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/hw/virtio-blk.c b/src/hw/virtio-blk.c index dca7855..901b8f5 100644 --- a/src/hw/virtio-blk.c +++ b/src/hw/virtio-blk.c @@ -118,13 +118,14 @@ init_virtio_blk(void *data) struct vp_device *vp = &vdrive->vp; u64 features = vp_get_features(vp); u64 version1 = 1ull << VIRTIO_F_VERSION_1; + u64 iommu_platform = 1ull << VIRTIO_F_IOMMU_PLATFORM; u64 blk_size = 1ull << VIRTIO_BLK_F_BLK_SIZE; if (!(features & version1)) { dprintf(1, "modern device without virtio_1 feature bit: %pP\n", pci); goto fail; }
- features = features & (version1 | blk_size); + features = features & (version1 | iommu_platform | blk_size); vp_set_features(vp, features); status |= VIRTIO_CONFIG_S_FEATURES_OK; vp_set_status(vp, status); diff --git a/src/hw/virtio-ring.h b/src/hw/virtio-ring.h index 7665fd5..8604a01 100644 --- a/src/hw/virtio-ring.h +++ b/src/hw/virtio-ring.h @@ -18,6 +18,7 @@
/* v1.0 compliant. */ #define VIRTIO_F_VERSION_1 32 +#define VIRTIO_F_IOMMU_PLATFORM 33
#define MAX_QUEUE_NUM (128)
diff --git a/src/hw/virtio-scsi.c b/src/hw/virtio-scsi.c index 7490ec0..4eea5c3 100644 --- a/src/hw/virtio-scsi.c +++ b/src/hw/virtio-scsi.c @@ -163,12 +163,13 @@ init_virtio_scsi(void *data) if (vp->use_modern) { u64 features = vp_get_features(vp); u64 version1 = 1ull << VIRTIO_F_VERSION_1; + u64 iommu_platform = 1ull << VIRTIO_F_IOMMU_PLATFORM; if (!(features & version1)) { dprintf(1, "modern device without virtio_1 feature bit: %pP\n", pci); goto fail; }
- vp_set_features(vp, version1); + vp_set_features(vp, features & (version1 | iommu_platform)); status |= VIRTIO_CONFIG_S_FEATURES_OK; vp_set_status(vp, status); if (!(vp_get_status(vp) & VIRTIO_CONFIG_S_FEATURES_OK)) {