Quoting Chris Wilson (2018-02-24 19:14:00)
> Although we want to specify exactly which physical engine to run on, the
> busy ioctl can only return the I915_EXEC_RING identifier, i.e. the
> aliased I915_EXEC_BSD for vcs0/vcs1. Horrors.
Fixes: 305ebcedc36e ("Iterate over physical engines")
> Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> ---
> tests/gem_busy.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/tests/gem_busy.c b/tests/gem_busy.c
> index 831bbab1..fcff51a2 100644
> --- a/tests/gem_busy.c
> +++ b/tests/gem_busy.c
> @@ -166,6 +166,7 @@ static void one(int fd, unsigned ring, unsigned test_flags)
> struct drm_i915_gem_relocation_entry store[1024+1];
> struct drm_i915_gem_execbuffer2 execbuf;
> unsigned size = ALIGN(ARRAY_SIZE(store)*16 + 4, 4096);
> + const unsigned uabi = ring & 63;
> uint32_t read[2], write[2];
> struct timespec tv;
> uint32_t *batch, *bbe;
> @@ -267,11 +268,11 @@ static void one(int fd, unsigned ring, unsigned test_flags)
> timeout = 1;
> }
>
> - igt_assert_eq(write[SCRATCH], ring);
> - igt_assert_eq_u32(read[SCRATCH], 1 << ring);
> + igt_assert_eq(write[SCRATCH], uabi);
> + igt_assert_eq_u32(read[SCRATCH], 1 << uabi);
>
> igt_assert_eq(write[BATCH], 0);
> - igt_assert_eq_u32(read[BATCH], 1 << ring);
> + igt_assert_eq_u32(read[BATCH], 1 << uabi);
>
> /* Calling busy in a loop should be enough to flush the rendering */
> memset(&tv, 0, sizeof(tv));
> --
> 2.16.1
>
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