[PATCH 4/6] I915_CONTEXT_PARAM_WATCHDOG

Chris Wilson chris at chris-wilson.co.uk
Tue Jan 12 20:53:14 UTC 2021


Quoting Tvrtko Ursulin (2021-01-12 17:22:18)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>

The watchdog needs to take an address to poll. And we need to define
whether or not we are looking for a change in value or if we set it to
zero after checking.

Then the question is whether that is a CPU address or VM address. I
expect it to be written by the GPU, so VM. (But some userspace will
definitely poke the value from the CPU as a keepalive.)
-Chris


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