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| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-12 10:26:38 -0400 |
|---|---|---|
| committer | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2021-05-19 23:50:27 -0400 |
| commit | 03f9016ed8200d2bdf9ffcb7de93642d298e4668 (patch) | |
| tree | ba6a2e45f0299d8bcb99b02c12f6978f4c1d5ee3 /drivers | |
| parent | d10d0daa207276aff3b740d1ea9b3f58a63256e7 (diff) | |
| download | linux-03f9016ed8200d2bdf9ffcb7de93642d298e4668.tar.bz2 | |
drm/amdgpu: Remap all page faults to per process dummy page.
On device removal reroute all CPU mappings to dummy page
per drm_file instance or imported GEM object.
v4:
Update for modified ttm_bo_vm_dummy_page
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210512142648.666476-7-andrey.grodzovsky@amd.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index 8c7ec09eb1a4..0d54e70278ca 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -48,6 +48,7 @@ #include <drm/ttm/ttm_placement.h> #include <drm/amdgpu_drm.h> +#include <drm/drm_drv.h> #include "amdgpu.h" #include "amdgpu_object.h" @@ -1905,18 +1906,28 @@ void amdgpu_ttm_set_buffer_funcs_status(struct amdgpu_device *adev, bool enable) static vm_fault_t amdgpu_ttm_fault(struct vm_fault *vmf) { struct ttm_buffer_object *bo = vmf->vma->vm_private_data; + struct drm_device *ddev = bo->base.dev; vm_fault_t ret; + int idx; ret = ttm_bo_vm_reserve(bo, vmf); if (ret) return ret; - ret = amdgpu_bo_fault_reserve_notify(bo); - if (ret) - goto unlock; + if (drm_dev_enter(ddev, &idx)) { + ret = amdgpu_bo_fault_reserve_notify(bo); + if (ret) { + drm_dev_exit(idx); + goto unlock; + } - ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, - TTM_BO_VM_NUM_PREFAULT, 1); + ret = ttm_bo_vm_fault_reserved(vmf, vmf->vma->vm_page_prot, + TTM_BO_VM_NUM_PREFAULT, 1); + + drm_dev_exit(idx); + } else { + ret = ttm_bo_vm_dummy_page(vmf, vmf->vma->vm_page_prot); + } if (ret == VM_FAULT_RETRY && !(vmf->flags & FAULT_FLAG_RETRY_NOWAIT)) return ret; |