On Tue, Oct 29, 2019 at 07:51:30AM +0000, Koenig, Christian wrote:
> > +static bool amdgpu_mn_invalidate_gfx(struct mmu_range_notifier *mrn,
> > + const struct mmu_notifier_range *range)
> > {
> > - struct amdgpu_bo *bo;
> > + struct amdgpu_bo *bo = container_of(mrn, struct amdgpu_bo, notifier);
> > + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> > long r;
> >
> > - list_for_each_entry(bo, &node->bos, mn_list) {
> > -
> > - if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, start, end))
> > - continue;
> > -
> > - r = dma_resv_wait_timeout_rcu(bo->tbo.base.resv,
> > - true, false, MAX_SCHEDULE_TIMEOUT);
> > - if (r <= 0)
> > - DRM_ERROR("(%ld) failed to wait for user bo\n", r);
> > - }
> > + /* FIXME: Is this necessary? */
>
> Most likely not.
>
> Christian.
>
> > + if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, range->start,
> > + range->end))
> > + return true;
So is the bo->tbo.mem.num_pages == bo->tbo.ttm.num_pages always?
And userptr can't be zero here, or at least it doesn't matter if it is?
> > +static bool amdgpu_mn_invalidate_hsa(struct mmu_range_notifier *mrn,
> > + const struct mmu_notifier_range *range)
> > {
> > - struct amdgpu_mn *amn = container_of(mirror, struct amdgpu_mn, mirror);
> > - unsigned long start = update->start;
> > - unsigned long end = update->end;
> > - bool blockable = mmu_notifier_range_blockable(update);
> > - struct interval_tree_node *it;
> > -
> > - /* notification is exclusive, but interval is inclusive */
> > - end -= 1;
> > -
> > - /* TODO we should be able to split locking for interval tree and
> > - * amdgpu_mn_invalidate_node
> > - */
> > - if (amdgpu_mn_read_lock(amn, blockable))
> > - return -EAGAIN;
> > -
> > - it = interval_tree_iter_first(&amn->objects, start, end);
> > - while (it) {
> > - struct amdgpu_mn_node *node;
> > -
> > - if (!blockable) {
> > - amdgpu_mn_read_unlock(amn);
> > - return -EAGAIN;
> > - }
> > + struct amdgpu_bo *bo = container_of(mrn, struct amdgpu_bo, notifier);
> > + struct amdgpu_device *adev = amdgpu_ttm_adev(bo->tbo.bdev);
> >
> > - node = container_of(it, struct amdgpu_mn_node, it);
> > - it = interval_tree_iter_next(it, start, end);
> > + /* FIXME: Is this necessary? */
> > + if (!amdgpu_ttm_tt_affect_userptr(bo->tbo.ttm, range->start,
> > + range->end))
> > + return true;
> >
> > - amdgpu_mn_invalidate_node(node, start, end);
> > - }
This one too right?
Jason
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