drm/nouveau/kms/nve4-nv108: Limit cursors to 128x128
While Kepler does technically support 256x256 cursors, it turns out that Kepler actually has some additional requirements for scanout surfaces that we're not enforcing correctly, which aren't present on Maxwell and later. Cursor surfaces must always use small pages (4K), and overlay surfaces must always use large pages (128K). Fixing this correctly though will take a bit more work: as we'll need to add some code in prepare_fb() to move cursor FBs in large pages to small pages, and vice-versa for overlay FBs. So until we have the time to do that, just limit cursor surfaces to 128x128 - a size small enough to always default to small pages. This means small ovlys are still broken on Kepler, but it is extremely unlikely anyone cares about those anyway :). Signed-off-by:Lyude Paul <lyude@redhat.com> Fixes: d3b2f0f7 ("drm/nouveau/kms/nv50-: Report max cursor size to userspace") Cc: <stable@vger.kernel.org> # v5.11+ Signed-off-by:
Ben Skeggs <bskeggs@redhat.com>
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