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Opened 6 years ago

Last modified 5 weeks ago

#423 new defect

DMA allocations need to survive address space destruction

Reported by: Martin Decky Owned by: Jakub Jermář
Priority: major Milestone:
Component: helenos/kernel/generic Version: mainline
Keywords: Cc:
Blocker for: Depends on:
See also:

Description

The current DMA allocator does not track/lock DMA mappings beyond address space destruction. This can be potentially fatal as a DMA memory once assigned to hardware can be overwritten by the hardware if the original driver dies and the physical frames from its address space are recycled.

Change History (3)

comment:1 Changed 6 years ago by Jakub Jermář

Milestone: 0.5.00.5.1

comment:2 Changed 3 years ago by Jiri Svoboda

Milestone: 0.6.00.7.1

comment:3 Changed 5 weeks ago by Jakub Jermář

Milestone: 0.7.1
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