[Intel-gfx] [RFC i-g-t 3/5] lib/igt_hang_ctx: Use dummyload batch to hang ctx.

[Chris Wilson]

Quoting Antonio Argenziano (2017-12-06 23:03:44)
> To hang a context we were effectively reimplementing a spinning batch
> and never stopping it. This patch reuses the recursive batch from
> igt_dummyload to hang a context.
> 
> Cc: Chris Wilson <chris at chris-wilson.co.uk>
> Signed-off-by: Antonio Argenziano <antonio.argenziano at intel.com>
> ---
>  #define SCRATCH 0
> @@ -168,6 +168,8 @@ static void emit_recursive_batch(igt_spin_t *spin,
>                 execbuf.flags = engines[i];
>                 gem_execbuf(fd, &execbuf);
>         }
> +
> +       spin->spinning_offset = obj->offset;

s/spinning_offset/gtt_offset;

spin->gtt_offset = obj[BATCH].offset;

which should fix up the CI failures.
-Chris