9 Dec
2020
9 Dec
'20
4:37 p.m.
On Wed, Dec 09, 2020 at 05:36:16PM +0100, Thomas Hellström (Intel) wrote:
Jason, Christian
In most implementations of the callback mentioned in the subject there's a fence wait. What exactly is it needed for?
Invalidate must stop DMA before returning, so presumably drivers using a dma fence are relying on a dma fence mechanism to stop DMA.
Jason