Support for large physical allocations
As part of the unified memory management work being driven by Linaro, we need to satisfy the requirement of providing physically contiguous buffers for devices that do not have access to an IOMMU. At the memory management mini-summit, the proposed solution was to leverage the CMA solution written by Marek Szyprowski of Samsung. The discussions around this indicated that some changes would need to be made to CMA as it stands even before sending the patches out for wider commentary.
Blueprint information
- Status:
- Complete
- Approver:
- Jesse Barker
- Priority:
- High
- Drafter:
- Jesse Barker
- Direction:
- Approved
- Assignee:
- Jesse Barker
- Definition:
- Approved
- Series goal:
- Accepted for trunk
- Implementation:
-
Implemented
- Milestone target:
-
backlog
- Started by
- Jesse Barker
- Completed by
- Jesse Barker
Related branches
Related bugs
Sprints
Whiteboard
[jesse-barker 2011-06-07]
Marek has indicated he will be able to drive the patchset for support of large contiguous allocation.
Work items (11.06):
Touch base with Marek to detemine state of code base: DONE
[m-szyprowski] Determine what API changes are required: DONE
Decide who will make the changes and submit patches: DONE
Work items:
[benjamin-gaignard] Add large physical allocation calls to the target device driver: DONE
[benjamin-gaignard] Write a test plan for exercising large physical allocation API: DONE
[benjamin-gaignard] Write user-space application for directed functional testing of large physical allocation support: DONE
Work Items
Dependency tree
* Blueprints in grey have been implemented.
