NOTIFY_ON_EMPTY, ANY_LAYOUT and BAD are only valid on the legacy
interface.
Hide them from modern guests.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
break;
case VIRTIO_PCI_COMMON_DF:
if (proxy->dfselect <= 1) {
- val = vdev->host_features >> (32 * proxy->dfselect);
+ val = (vdev->host_features & ~VIRTIO_LEGACY_FEATURES) >>
+ (32 * proxy->dfselect);
}
break;
case VIRTIO_PCI_COMMON_GFSELECT:
/* A guest should never accept this. It implies negotiation is broken. */
#define VIRTIO_F_BAD_FEATURE 30
+#define VIRTIO_LEGACY_FEATURES ((0x1ULL << VIRTIO_F_BAD_FEATURE) | \
+ (0x1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \
+ (0x1ULL << VIRTIO_F_ANY_LAYOUT))
+
struct VirtQueue;
static inline hwaddr vring_align(hwaddr addr,