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drm/amdgpu: Reserve VM root shared fence slot for command submission (v3) 

Without this, there could not be enough slots, which could trigger the
BUG_ON in reservation_object_add_shared_fence.

v2:
* Jump to the error label instead of returning directly (Jerry Zhang)
v3:
* Reserve slots for command submission after VM updates (Christian König)

Cc: stable@vger.kernel.org
Bugzilla: https://bugs.freedesktop.org/106418
Reported-by: mikhail.v.gavrilov@gmail.com
Signed-off-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Junwei Zhang <Jerry.Zhang@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Michel Dänzer 2018-06-25 11:07:17 +02:00 committed by Alex Deucher
parent dc407ee0bd
commit 02374bbd3b
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View File

@ -928,6 +928,10 @@ static int amdgpu_cs_ib_vm_chunk(struct amdgpu_device *adev,
r = amdgpu_bo_vm_update_pte(p);
if (r)
return r;
r = reservation_object_reserve_shared(vm->root.base.bo->tbo.resv);
if (r)
return r;
}
return amdgpu_cs_sync_rings(p);