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

[Lionel Landwerlin]

On 05/06/18 19:47, Chris Wilson wrote:
> 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
>
I don't understand why this would be an issue.

-
Lionel