| Message ID | 20240826071641.2691374-4-manojvishy@google.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | vfio/iommu: Flag to allow userspace to set DMA buffers system cacheable | expand |
diff --git a/include/uapi/linux/vfio.h b/include/uapi/linux/vfio.h index 2b68e6cdf190..494611a046d3 100644 --- a/include/uapi/linux/vfio.h +++ b/include/uapi/linux/vfio.h @@ -1560,6 +1560,7 @@ struct vfio_iommu_type1_dma_map { #define VFIO_DMA_MAP_FLAG_READ (1 << 0) /* readable from device */ #define VFIO_DMA_MAP_FLAG_WRITE (1 << 1) /* writable from device */ #define VFIO_DMA_MAP_FLAG_VADDR (1 << 2) +#define VFIO_DMA_MAP_FLAG_SYS_CACHE (1 << 6) /* Sys Cache able from device */ __u64 vaddr; /* Process virtual address */ __u64 iova; /* IO virtual address */ __u64 size; /* Size of mapping (bytes) */
This new flag allows controlling whether a device buffers should be mapped to sys cache for mapped DMA regions. Signed-off-by: Manoj Vishwanathan <manojvishy@google.com> --- include/uapi/linux/vfio.h | 1 + 1 file changed, 1 insertion(+)