[Intel-gfx] [PATCH i-g-t 2/2] tests/gem_exec_reloc: Calculate softpin offsets from batch size

[Chris Wilson]

Quoting Janusz Krzysztofik (2019-10-23 10:07:52)
> From: Janusz Krzysztofik <janusz.krzysztofik at intel.com>
> 
> The basic-range subtest assumes 4kB minimum batch size.  On future
> backends with possibly bigger minimum batch sizes this subtest will
> fail as buffer objects may overlap.  To avoid object overlapping,
> offsets need to be calculated with actual minimum batch size in mind.
> 
> Replace hardcoded constants corresponding to the assumed 4kB minimum
> batch size with values calculated from a variable supposed to represent
> actual batch size.  For now, the variable is still initialized with the
> 4kB value, suitable for backends currently supported by IGT.

You could do this entirely within the reloc API, no? By probing whether
a 4KiB offset is legal?
-Chris