Hi all,
On Thu, 3 Jun 2021 12:48:47 +1000 Stephen Rothwell <s...@canb.auug.org.au>
wrote:
>
> Today's linux-next merge of the amdgpu tree got conflicts in:
>
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>
> between commit:
>
> d3116756a710 ("drm/ttm: rename bo->mem and make it a pointer")
>
> from the drm-misc tree and commits:
>
> b453e42a6e8b ("drm/amdgpu: Add new placement for preemptible SG BOs")
> 2a675640bc2d ("drm/amdgpu: move shadow bo validation to VM code")
> 59276f056fb7 ("drm/amdgpu: switch to amdgpu_bo_vm for vm code")
> 19a1d9350be6 ("drm/amdgpu: flush gart changes after all BO recovery")
>
> from the amdgpu tree.
>
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging. You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.
>
> --
> Cheers,
> Stephen Rothwell
>
> diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 663aa7d2e2ea,86259435803e..000000000000
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@@ -459,10 -479,11 +461,11 @@@ static int amdgpu_bo_move(struct ttm_bu
> {
> struct amdgpu_device *adev;
> struct amdgpu_bo *abo;
> - struct ttm_resource *old_mem = &bo->mem;
> + struct ttm_resource *old_mem = bo->resource;
> int r;
>
> - if (new_mem->mem_type == TTM_PL_TT) {
> + if (new_mem->mem_type == TTM_PL_TT ||
> + new_mem->mem_type == AMDGPU_PL_PREEMPT) {
> r = amdgpu_ttm_backend_bind(bo->bdev, bo->ttm, new_mem);
> if (r)
> return r;
> @@@ -989,8 -1012,9 +995,9 @@@ int amdgpu_ttm_alloc_gart(struct ttm_bu
> return r;
> }
>
> + amdgpu_gart_invalidate_tlb(adev);
> - ttm_resource_free(bo, &bo->mem);
> - bo->mem = tmp;
> + ttm_resource_free(bo, bo->resource);
> + ttm_bo_assign_mem(bo, &tmp);
> }
>
> return 0;
> @@@ -1348,7 -1373,16 +1356,16 @@@ static bool amdgpu_ttm_bo_eviction_valu
> }
> }
>
> - switch (bo->mem.mem_type) {
> + switch (bo->resource->mem_type) {
> + case AMDGPU_PL_PREEMPT:
> + /* Preemptible BOs don't own system resources managed by the
> + * driver (pages, VRAM, GART space). They point to resources
> + * owned by someone else (e.g. pageable memory in user mode
> + * or a DMABuf). They are used in a preemptible context so we
> + * can guarantee no deadlocks and good QoS in case of MMU
> + * notifiers or DMABuf move notifiers from the resource owner.
> + */
> + return false;
> case TTM_PL_TT:
> if (amdgpu_bo_is_amdgpu_bo(bo) &&
> amdgpu_bo_encrypted(ttm_to_amdgpu_bo(bo)))
> @@@ -1767,8 -1809,13 +1791,9 @@@ void amdgpu_ttm_fini(struct amdgpu_devi
> amdgpu_bo_free_kernel(&adev->mman.discovery_memory, NULL, NULL);
> amdgpu_ttm_fw_reserve_vram_fini(adev);
>
> - if (adev->mman.aper_base_kaddr)
> - iounmap(adev->mman.aper_base_kaddr);
> - adev->mman.aper_base_kaddr = NULL;
> -
> amdgpu_vram_mgr_fini(adev);
> amdgpu_gtt_mgr_fini(adev);
> + amdgpu_preempt_mgr_fini(adev);
> ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_GDS);
> ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_GWS);
> ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_OA);
> @@@ -1919,7 -2010,12 +1944,12 @@@ int amdgpu_fill_buffer(struct amdgpu_b
> return -EINVAL;
> }
>
> - if (bo->tbo.mem.mem_type == AMDGPU_PL_PREEMPT) {
> ++ if (bo->tbo.resource->mem_type == AMDGPU_PL_PREEMPT) {
> + DRM_ERROR("Trying to clear preemptible memory.\n");
> + return -EINVAL;
> + }
> +
> - if (bo->tbo.mem.mem_type == TTM_PL_TT) {
> + if (bo->tbo.resource->mem_type == TTM_PL_TT) {
> r = amdgpu_ttm_alloc_gart(&bo->tbo);
> if (r)
> return r;
> diff --cc drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> index bcfd4a8d0288,1923f035713a..000000000000
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
> @@@ -657,11 -657,10 +658,11 @@@ void amdgpu_vm_move_to_lru_tail(struct
> if (!bo->parent)
> continue;
>
> - ttm_bo_move_to_lru_tail(&bo->tbo, &bo->tbo.mem,
> + ttm_bo_move_to_lru_tail(&bo->tbo, bo->tbo.resource,
> &vm->lru_bulk_move);
> - if (bo->shadow)
> - ttm_bo_move_to_lru_tail(&bo->shadow->tbo,
> + if (shadow)
> - ttm_bo_move_to_lru_tail(&shadow->tbo, &shadow->tbo.mem,
> ++ ttm_bo_move_to_lru_tail(&shadow->tbo,
> + shadow->tbo.resource,
> &vm->lru_bulk_move);
> }
> spin_unlock(&adev->mman.bdev.lru_lock);
> @@@ -1818,11 -1853,12 +1859,12 @@@ int amdgpu_vm_bo_update(struct amdgpu_d
> struct drm_gem_object *gobj = dma_buf->priv;
> struct amdgpu_bo *abo = gem_to_amdgpu_bo(gobj);
>
> - if (abo->tbo.mem.mem_type == TTM_PL_VRAM)
> + if (abo->tbo.resource->mem_type == TTM_PL_VRAM)
> bo = gem_to_amdgpu_bo(gobj);
> }
> - mem = &bo->tbo.mem;
> + mem = bo->tbo.resource;
> - if (mem->mem_type == TTM_PL_TT)
> + if (mem->mem_type == TTM_PL_TT ||
> + mem->mem_type == AMDGPU_PL_PREEMPT)
> pages_addr = bo->tbo.ttm->dma_address;
> }
> This is now a conflict between the drm-misc tree and the drm tree. (I fixed up the resolution above) -- Cheers, Stephen Rothwell
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