Displaying 4 results from an estimated 4 matches for "amdgpu_gem_userptr_anonon".
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amdgpu_gem_userptr_anononly
2019 Oct 29
2
[PATCH v2 12/15] drm/amdgpu: Call find_vma under mmap_sem
...led to get hmm_mirror\n");
> - r = -EFAULT;
> - goto out;
> + return -EFAULT;
> }
>
> - vma = find_vma(mm, start);
> - if (unlikely(!vma || start < vma->vm_start)) {
> - r = -EFAULT;
> - goto out;
> - }
> - if (unlikely((gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) &&
> - vma->vm_file)) {
> - r = -EPERM;
> - goto out;
> - }
> + mm = mirror->hmm->mmu_notifier.mm;
> + if (!mmget_not_zero(mm)) /* Happens during process shutdown */
This works because mirror->hmm->mmu_notifier holds an mmgrab reference
to the mm? So...
2019 Oct 28
0
[PATCH v2 12/15] drm/amdgpu: Call find_vma under mmap_sem
...if (unlikely(!mirror)) {
DRM_DEBUG_DRIVER("Failed to get hmm_mirror\n");
- r = -EFAULT;
- goto out;
+ return -EFAULT;
}
- vma = find_vma(mm, start);
- if (unlikely(!vma || start < vma->vm_start)) {
- r = -EFAULT;
- goto out;
- }
- if (unlikely((gtt->userflags & AMDGPU_GEM_USERPTR_ANONONLY) &&
- vma->vm_file)) {
- r = -EPERM;
- goto out;
- }
+ mm = mirror->hmm->mmu_notifier.mm;
+ if (!mmget_not_zero(mm)) /* Happens during process shutdown */
+ return -ESRCH;
range = kzalloc(sizeof(*range), GFP_KERNEL);
if (unlikely(!range)) {
@@ -847,6 +837,17 @@ int amdg...
2019 Oct 28
32
[PATCH v2 00/15] Consolidate the mmu notifier interval_tree and locking
From: Jason Gunthorpe <jgg at mellanox.com>
8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1,
scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where
they only use invalidate_range_start/end and immediately check the
invalidating range against some driver data structure to tell if the
driver is interested. Half of them use an interval_tree, the others
2019 Nov 12
20
[PATCH hmm v3 00/14] Consolidate the mmu notifier interval_tree and locking
From: Jason Gunthorpe <jgg at mellanox.com>
8 of the mmu_notifier using drivers (i915_gem, radeon_mn, umem_odp, hfi1,
scif_dma, vhost, gntdev, hmm) drivers are using a common pattern where
they only use invalidate_range_start/end and immediately check the
invalidating range against some driver data structure to tell if the
driver is interested. Half of them use an interval_tree, the others