[Intel-gfx] [PATCH igt 2/2] igt/gem_ctx_isolation: Check isolation of registers between contexts

[Chris Wilson]

Quoting Chris Wilson (2017-11-14 13:19:24)
> A new context assumes that all of its registers are in the default state
> when it is created. What may happen is that a register written by one
> context may leak into the second, causing mass confusion.
> 
> v2: extend back to Sandybridge, ignore non-priv registers that are not
> context-saved (remind me what this test is all about!!!)
> v3: Check context preserves registers across suspend/hibernate and
> resets.
> 
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> ---
> +                       igt_subtest_f("%s-unsafe", e->name) {
> +                               igt_require(platform_validation);
> +                               isolation(fd, engine, DIRTY2 | DIRTY1 | UNSAFE);
> +                       }

I guess the consensus is toward deleting the unsafe variants and doing
a more substantial task for p/o validation.
-Chris