On Wed, 22 Feb 2012 20:29:19 +0100, Ben Widawsky <ben@xxxxxxxxxxxx> wrote: > + mutex_lock(&dev->prime_mutex); > + /* First check that we don't dup on this file */ > + ret = drm_prime_lookup_fd_handle_mapping(&file_priv->prime, dma_buf, > + handle); The other example of importing bo we have already in GEM is through the use of flink and global names. There we create a new handle every time a process opens a name, and de-duplication is indeed handled in userspace if it so desires. Multiple handles pointing to the same object simplifies the code without risking kernel integrity, so why bother with kernel de-dupe? And allow userspace the extra bit of freedom to shoot itself in the foot! -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
