drm/nvc0: remove vm hack forcing large/small pages to not share a PDE

Appears to be fixed with commit:

"drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo"

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 1 insertions, 12 deletions

diff --git a/drivers/gpu/drm/nouveau/nouveau_vm.c b/drivers/gpu/drm/nouveau/nouveau_vm.c
index 62824c80bcb8..0059e6f58a8b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_vm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_vm.c
@@ -314,18 +314,7 @@ nouveau_vm_new(struct drm_device *dev, u64 offset, u64 length, u64 mm_offset,
                 vm->spg_shift = 12;
                 vm->lpg_shift = 17;
                 pgt_bits = 27;
-
-                /* Should be 4096 everywhere, this is a hack that's
-                 * currently necessary to avoid an elusive bug that
-                 * causes corruption when mixing small/large pages
-                 */
-                if (length < (1ULL << 40))
-                        block = 4096;
-                else {
-                        block = (1 << pgt_bits);
-                        if (length < block)
-                                block = length;
-                }
+                block = 4096;
         } else {
                 kfree(vm);
                 return -ENOSYS;