diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-03-16 20:32:13 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2020-03-26 14:33:37 -0300 |
| commit | f894ddd5ff01d3bb48faf4dc533536bf5269c17a (patch) | |
| tree | 6e62359994be7d1e61aab32864b6cc399cbb09e5 /drivers | |
| parent | 5a0c38d307afde167175602aa52ca4e6c5c42c44 (diff) | |
memremap: add an owner field to struct dev_pagemap
Add a new opaque owner field to struct dev_pagemap, which will allow the
hmm and migrate_vma code to identify who owns ZONE_DEVICE memory, and
refuse to work on mappings not owned by the calling entity.
Link: https://lore.kernel.org/r/20200316193216.920734-2-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ralph Campbell <rcampbell@nvidia.com>
Tested-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_dmem.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_dmem.c b/drivers/gpu/drm/nouveau/nouveau_dmem.c index 0ad5d87b5a8e..a4682272586e 100644 --- a/drivers/gpu/drm/nouveau/nouveau_dmem.c +++ b/drivers/gpu/drm/nouveau/nouveau_dmem.c @@ -526,6 +526,7 @@ nouveau_dmem_init(struct nouveau_drm *drm) drm->dmem->pagemap.type = MEMORY_DEVICE_PRIVATE; drm->dmem->pagemap.res = *res; drm->dmem->pagemap.ops = &nouveau_dmem_pagemap_ops; + drm->dmem->pagemap.owner = drm->dev; if (IS_ERR(devm_memremap_pages(device, &drm->dmem->pagemap))) goto out_free; |