diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/iommu.h | 6 | ||||
| -rw-r--r-- | include/linux/iommufd.h | 2 |
2 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/iommu.h b/include/linux/iommu.h index ac43b8b93f14..05f7cee1375e 100644 --- a/include/linux/iommu.h +++ b/include/linux/iommu.h @@ -773,8 +773,10 @@ struct iommu_ops { * passes in the cache invalidation requests, in form * of a driver data structure. The driver must update * array->entry_num to report the number of handled - * invalidation requests. The driver data structure - * must be defined in include/uapi/linux/iommufd.h + * invalidation requests. A driver may handle fewer than + * the requested, in which case the core re-invokes the + * op for the remainder. The driver data structure must + * be defined in include/uapi/linux/iommufd.h * @iova_to_phys: translate iova to physical address * @enforce_cache_coherency: Prevent any kind of DMA from bypassing IOMMU_CACHE, * including no-snoop TLPs on PCIe or other platform diff --git a/include/linux/iommufd.h b/include/linux/iommufd.h index 6e7efe83bc5d..3087f5b2def8 100644 --- a/include/linux/iommufd.h +++ b/include/linux/iommufd.h @@ -154,6 +154,8 @@ struct iommufd_hw_queue { * The @array passes in the cache invalidation requests, in * form of a driver data structure. A driver must update the * array->entry_num to report the number of handled requests. + * A driver may handle fewer than the requested entry_num, in + * which case the core re-invokes the op for the remainder. * The data structure of the array entry must be defined in * include/uapi/linux/iommufd.h * @vdevice_size: Size of the driver-defined vDEVICE structure per this vIOMMU |