On 1/4/22 9:56 AM, Lu Baolu wrote:
Hi folks,
The iommu group is the minimal isolation boundary for DMA. Devices in
a group can access each other's MMIO registers via peer to peer DMA
and also need share the same I/O address space.
Once the I/O address space is assigned to user control it is no
Hi Jason,
On 1/4/22 8:48 PM, Jason Gunthorpe wrote:
On Tue, Jan 04, 2022 at 09:56:30AM +0800, Lu Baolu wrote:
v5:
- Move kernel dma ownership auto-claiming from driver core to bus
callback. (Greg)
- Refactor the iommu interfaces to make them more specific.
(Jason/Robin)
-
On Tue, Jan 04, 2022 at 09:56:30AM +0800, Lu Baolu wrote:
> v5:
> - Move kernel dma ownership auto-claiming from driver core to bus
> callback. (Greg)
> - Refactor the iommu interfaces to make them more specific.
> (Jason/Robin)
> - Simplify the dma ownership implementation by
Hi folks,
The iommu group is the minimal isolation boundary for DMA. Devices in
a group can access each other's MMIO registers via peer to peer DMA
and also need share the same I/O address space.
Once the I/O address space is assigned to user control it is no longer
available to the dma_map*
