diff options
| author | Christian König <christian.koenig@amd.com> | 2016-07-08 11:21:02 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-07-14 23:46:07 +0300 |
| commit | 090b767e97fcdabe8ecd71cf43e7d39d94e6cfef (patch) | |
| tree | 68cbae5a009f06c5fbcd91f29d85856967fbb5d9 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | d3200be6c423afa1c34f7e39e9f6d04dd5b0af9d (diff) | |
| download | linux-090b767e97fcdabe8ecd71cf43e7d39d94e6cfef.tar.xz | |
drm/amdgpu: check flush fence context instead of same ring v2
Otherwise we can run into the following situation:
1. Process A grabs ID 1 for ring 0.
2. Process B grabs ID 1 for ring 0.
3. Process A grabs ID 1 for ring 1.
4. Process A tries to reuse ID1 for ring 0 but things he doesn't need to flush.
v2: check the context of the flush fence instead of messing with the owner field.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 2f8496d48c94..a041168ad521 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -195,6 +195,7 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, struct amdgpu_job *job) { struct amdgpu_device *adev = ring->adev; + uint64_t fence_context = adev->fence_context + ring->idx; struct fence *updates = sync->last_vm_update; struct amdgpu_vm_id *id, *idle; struct fence **fences; @@ -254,7 +255,6 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, i = ring->idx; do { struct fence *flushed; - bool same_ring = ring->idx == i; id = vm->ids[i++]; if (i == AMDGPU_MAX_RINGS) @@ -272,8 +272,11 @@ int amdgpu_vm_grab_id(struct amdgpu_vm *vm, struct amdgpu_ring *ring, if (job->vm_pd_addr != id->pd_gpu_addr) continue; - if (!same_ring && - (!id->last_flush || !fence_is_signaled(id->last_flush))) + if (!id->last_flush) + continue; + + if (id->last_flush->context != fence_context && + !fence_is_signaled(id->last_flush)) continue; flushed = id->flushed_updates; |