On 09/03/2020 17:02, Mrozek, Michal wrote:
But he asked whether it's possible for Media and OpenCL drivers to also disable mid-thread preemption through the INTERFACE_DESCRIPTOR_DATA, instead of from the >>kernel side, so we could try to experiment with it in the future.
Interface Descriptor setting only switches the preemption from mid thread to thread group.
It doesn't allow to disable it completely and there are cases where this is required (i.e. VME).
For that we need mmio whitelist.
With "disable it completely" you mean disable preemption completely - go
lower than thread-group in granularity?
Regards,
Tvrtko
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