diff options
Diffstat (limited to 'include/standard-headers/linux/virtio_config.h')
| -rw-r--r-- | include/standard-headers/linux/virtio_config.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/standard-headers/linux/virtio_config.h b/include/standard-headers/linux/virtio_config.h index 9a69d9e242..22e3a85f67 100644 --- a/include/standard-headers/linux/virtio_config.h +++ b/include/standard-headers/linux/virtio_config.h @@ -67,13 +67,15 @@ #define VIRTIO_F_VERSION_1 32 /* - * If clear - device has the IOMMU bypass quirk feature. - * If set - use platform tools to detect the IOMMU. + * If clear - device has the platform DMA (e.g. IOMMU) bypass quirk feature. + * If set - use platform DMA tools to access the memory. * * Note the reverse polarity (compared to most other features), * this is for compatibility with legacy systems. */ -#define VIRTIO_F_IOMMU_PLATFORM 33 +#define VIRTIO_F_ACCESS_PLATFORM 33 +/* Legacy name for VIRTIO_F_ACCESS_PLATFORM (for compatibility with old userspace) */ +#define VIRTIO_F_IOMMU_PLATFORM VIRTIO_F_ACCESS_PLATFORM /* This feature indicates support for the packed virtqueue layout. */ #define VIRTIO_F_RING_PACKED 34 |