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(parent: f4f0b6a) | patch
drm/nouveau/mmu: flush tlbs before deleting page tables
authorBen Skeggs <bskeggs@redhat.com>
Mon, 25 Sep 2017 05:05:38 +0000 (15:05 +1000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 27 Oct 2017 08:38:07 +0000 (10:38 +0200)
commit710c0b073eeb2283a6d2747a6b4babf8610921f7
treee0a79781376f29ab389d9ccbe6e8ba3c2323542dtree | snapshot
parentf4f0b6aa58eb74cedc81e7138f8b24b6d282c628commit | diff
drm/nouveau/mmu: flush tlbs before deleting page tables

commit 77913bbcb43ac9a07a6fe849c2fd3bf85fc8bdd8 upstream.

Even though we've zeroed the PDE, the GPU may have cached the PD, so we
need to flush when deleting them.

Noticed while working on replacement MMU code, but a backport might be a
good idea, so let's fix it in the current code too.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/gpu/drm/nouveau/nvkm/subdev/mmu/base.c diff | blob | history
Linux kernels and configurations used by Zygo.