On Thu, Nov 21, 2019 at 11:38:07AM +0100, Gerd Hoffmann wrote:
Use the shared address space of the drm device (see drm_open() in drm_file.c) for dma-bufs too. That removes a difference betweem drm device mmap vmas and dma-buf mmap vmas and fixes corner cases like unmaps not working properly.
Signed-off-by: Gerd Hoffmann kraxel@redhat.com
drivers/gpu/drm/drm_prime.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/drm_prime.c b/drivers/gpu/drm/drm_prime.c index a9633bd241bb..c3fc341453c0 100644 --- a/drivers/gpu/drm/drm_prime.c +++ b/drivers/gpu/drm/drm_prime.c @@ -240,6 +240,7 @@ void drm_prime_destroy_file_private(struct drm_prime_file_private *prime_fpriv) struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev, struct dma_buf_export_info *exp_info) {
struct drm_gem_object *obj = exp_info->priv; struct dma_buf *dma_buf;
dma_buf = dma_buf_export(exp_info);
@@ -247,7 +248,8 @@ struct dma_buf *drm_gem_dmabuf_export(struct drm_device *dev, return dma_buf;
drm_dev_get(dev);
- drm_gem_object_get(exp_info->priv);
- drm_gem_object_get(obj);
- dma_buf->file->f_mapping = obj->dev->anon_inode->i_mapping;
Can you pls also throw the change to amdgpu_gem_prime_export on top here? Imo makes a lot more sense that way. With that added I'm happy to r-b. -Daniel
return dma_buf; } -- 2.18.1