[igt-dev] [PATCH i-g-t 2/2] tests/i915-query: add new tests for perf configurations queries

[Chris Wilson]

Quoting Lionel Landwerlin (2018-06-05 17:23:23)
> +       len = ALIGN(query.oa.n_mux_regs * sizeof(uint32_t) * 2, 4096);
> +       data = mmap(0, len, PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
> +       memset(data, 0, len);
> +       mprotect(data, len, PROT_READ);
> +       query.oa.mux_regs_ptr = to_user_pointer(data);
> +       igt_assert_eq(-EFAULT,
> +                     query_perf_config_data(fd, sizeof(query), &query.query));

Just the random thought, have we stuffed gem_mmap__gtt() addresses
through these yet?
-Chris