On Thu, 16 May 2024, Nirmoy Das <nirmoy.das@xxxxxxxxx> wrote:
> The previous commit 'commit 8d4ba9fc1c6c ("drm/i915/selftests: Pick
"previous commit" is a fairly vague reference once this gets
committed. It's not going to be "previous" in any meaningful sense.
Please just start with:
Commit 8d4ba9fc1c6c ("drm/i915/selftests: Pick correct caching mode.")
was not complete...
And probably add:
Fixes: 8d4ba9fc1c6c ("drm/i915/selftests: Pick correct caching mode.")
BR,
Jani.
> correct caching mode.")' was not complete as for non LLC sharing platforms
> cpu read can happen from LLC which probably doesn't have the latest
> changes made by GPU.
>
> Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
> Cc: Janusz Krzysztofik <janusz.krzysztofik@xxxxxxxxxxxxxxx>
> Cc: Jonathan Cavitt <jonathan.cavitt@xxxxxxxxx>
> Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
> index 65a931ea80e9..3527b8f446fe 100644
> --- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
> +++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_dmabuf.c
> @@ -196,7 +196,7 @@ static int verify_access(struct drm_i915_private *i915,
> if (err)
> goto out_file;
>
> - mode = intel_gt_coherent_map_type(to_gt(i915), native_obj, true);
> + mode = intel_gt_coherent_map_type(to_gt(i915), native_obj, false);
> vaddr = i915_gem_object_pin_map_unlocked(native_obj, mode);
> if (IS_ERR(vaddr)) {
> err = PTR_ERR(vaddr);
--
Jani Nikula, Intel
