On 8/22/25 13:55, Danilo Krummrich wrote:
On Tue Aug 12, 2025 at 12:00 AM CEST, James Jones wrote:
On some chipsets, which block-linear modifiers are
supported is format-specific. However, linear
modifiers are always be supported. The prior
modifier filtering logic was not accounting for
the linear case.
Fixes: c586f30bf74c ("drm/nouveau/kms: Add format mod prop to base/ovly/nvdisp")
Signed-off-by: James Jones <[email protected]>
This issue seems to be present since v5.10, what's the implication of this? I
assume this has to be backported into stable releases?
Does the subsequent patch break strictly depend on this fix, or can it go
separately?
Without this fix, the next patch breaks linear modifier use on
Blackwell2+. In my testing, that meant fbcon was severely corrupted (In
a manner that suggests it ends up with a block-linear surface rendered
to as if it was linear).
Yes, it has to go back to a fair number of stable branches to fix
similar issues on pre-fermi GPUs, though oddly in my testing
before/after this patch, fbcon came up fine on my NV50, so the effects
might not be as severe there for some reason.
Thanks,
-James
