Re: [PATCH 5/6] drm/i915: Don't use scratch in WA batch.

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Quoting Michał Winiarski (2019-09-26 11:06:34)
> We're currently doing one workaround where we're using scratch as a
> temporary storage place, while we're overwriting the value of one
> register with some known constant value in order to perform a
> workaround.
> While we could just do similar thing with CS_GPR register
> and MI_LOAD_REGISTER_REG instead of scratch, since we would use CS_GPR
> anyways, let's just drop the constant values and do the bitops using
> MI_MATH.

I'd like to have your confirmation that the w/a batch is executed before
the CS_GPR are restored from the context image, and I'm going to wait
for gem_ctx_isolation verification :-p
-Chris
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