On Feb 28, 2016 9:36 AM, "Cristian Ionescu-Idbohrn" <cristian.ionescu-idbohrn@axis.com> wrote:
>
>
> "Apparently there is some work under way to allow both ZONE_DEVICE
> (needed for DAX) and ZONE_DMA (needed by the sound drivers) to be
> supported in the same kernel configuration."
Yeah, but do you actually need or use ZONE_DEVICE?
Even DAX doesn't actually need it except for some special cases, iirc.
I don't think distributions should necessarily enable it at all yet.
> and there may be some hope with:
>
> http://www.spinics.net/lists/kernel/msg2170767.html
>
> Is there, Linus?
Yes, but that's 4.6 of later. And unlikely to be marked for back porting to stable.
So *eventually* we'll support that combination, but for now...
Linus