diff options
| author | Philip Yang <Philip.Yang@amd.com> | 2024-06-20 12:31:36 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-07-23 17:42:54 -0400 |
| commit | 834368eab36922595a402b9e76470f8efa2fac7f (patch) | |
| tree | 51d83dba64bc1d07dc6141c8422040df547f39a5 /drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | |
| parent | 22a9d5cbf88a92ac6cd473c3ba1c369aee8fec9a (diff) | |
drm/amdkfd: Ensure user queue buffers residency
Add atomic queue_refcount to struct bo_va, return -EBUSY to fail unmap
BO from the GPU if the bo_va queue_refcount is not zero.
Create queue to increase the bo_va queue_refcount, destroy queue to
decrease the bo_va queue_refcount, to ensure the queue buffers mapped on
the GPU when queue is active.
Signed-off-by: Philip Yang <Philip.Yang@amd.com>
Reviewed-by: Felix Kuehling <felix.kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c index 0ab37e7aec26..6d5fd371d5ce 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c @@ -1252,7 +1252,7 @@ static int unreserve_bo_and_vms(struct bo_vm_reservation_context *ctx, return ret; } -static void unmap_bo_from_gpuvm(struct kgd_mem *mem, +static int unmap_bo_from_gpuvm(struct kgd_mem *mem, struct kfd_mem_attachment *entry, struct amdgpu_sync *sync) { @@ -1260,11 +1260,18 @@ static void unmap_bo_from_gpuvm(struct kgd_mem *mem, struct amdgpu_device *adev = entry->adev; struct amdgpu_vm *vm = bo_va->base.vm; + if (bo_va->queue_refcount) { + pr_debug("bo_va->queue_refcount %d\n", bo_va->queue_refcount); + return -EBUSY; + } + amdgpu_vm_bo_unmap(adev, bo_va, entry->va); amdgpu_vm_clear_freed(adev, vm, &bo_va->last_pt_update); amdgpu_sync_fence(sync, bo_va->last_pt_update); + + return 0; } static int update_gpuvm_pte(struct kgd_mem *mem, @@ -2191,7 +2198,10 @@ int amdgpu_amdkfd_gpuvm_unmap_memory_from_gpu( pr_debug("\t unmap VA 0x%llx - 0x%llx from entry %p\n", entry->va, entry->va + bo_size, entry); - unmap_bo_from_gpuvm(mem, entry, ctx.sync); + ret = unmap_bo_from_gpuvm(mem, entry, ctx.sync); + if (ret) + goto unreserve_out; + entry->is_mapped = false; mem->mapped_to_gpu_memory--; |