diff options
| author |   Dave Airlie <airlied@redhat.com> | 2023-11-30 11:08:52 +1000 |
|---|---|---|
| committer |   Danilo Krummrich <dakr@redhat.com> | 2023-11-30 05:47:42 +0100 |
| commit | cb9c919364653eeafb49e7ff5cd32f1ad64063ac (patch) | |
| tree | d8da5b0fa988d874513e421a603f34bae6459055 | |
| parent | nouveau/gsp: document some aspects of GSP-RM (diff) | |
| download | linux-rng-cb9c919364653eeafb49e7ff5cd32f1ad64063ac.tar.xz linux-rng-cb9c919364653eeafb49e7ff5cd32f1ad64063ac.zip | |
nouveau/tu102: flush all pdbs on vmm flush
This is a hack around a bug exposed with the GSP code, I'm not sure
what is happening exactly, but it appears some of our flushes don't
result in proper tlb invalidation for out BAR2 and we get a BAR2
fault from GSP and it all dies.
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231130010852.4034774-1-airlied@gmail.com
| -rw-r--r-- | drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c index e34bc6076401..8379e72d77ab 100644 --- a/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c +++ b/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c @@ -31,7 +31,7 @@ tu102_vmm_flush(struct nvkm_vmm *vmm, int depth) type |= 0x00000001; /* PAGE_ALL */ if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR])) - type |= 0x00000004; /* HUB_ONLY */ + type |= 0x00000006; /* HUB_ONLY | ALL PDB (hack) */ mutex_lock(&vmm->mmu->mutex); |