dma-buf map attachment API returns a hint to support caching
Registered by
Jesse Barker
Map attachment API needs to return a hint to indicate whether the attachment has actually changed since the previous operation. This is to support performance sensitive use cases where unmapping/remapping for each operation may be prohibitive. May need to extend dev->dma_params to include max_nents to know max # of entries in sglist.
Blueprint information
- Status:
- Not started
- Approver:
- Jesse Barker
- Priority:
- High
- Drafter:
- None
- Direction:
- Needs approval
- Assignee:
- None
- Definition:
- New
- Series goal:
- Accepted for trunk
- Implementation:
- Unknown
- Milestone target:
- backlog
- Started by
- Completed by
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