Hi Thomas, I got a question about BO object it seems that from kernel point of view we don't store the size the user requested for allocation, also there is no easy way to quickly get BO handle.
I would need both for two reasons. I need to know user size allocation request so i can check if user is trying to access outside the area it has requested for (even though the request might still end in the allocated area as its rounded to page). I would need BO handle mostly to help debuguing user/kernel space interaction and quickly see about which object each other are thinking of. Also does fence class have ever been tested ? I would like to have a class for 3d and one for 2d on radeon (as flush and pipeline are different). Side remark should there be some check on flag, mask, hint the userspace ask for as for instance userspace might ask for buffer to not be fenced while it's needed. And am i right in assuming that validate will fail if userspace still have a mapping of the buffer active ? I don't think i fully understand bo->fence_type, it is set in drm_fence_buffer_objects. My understanding is that for instance if you get submited a command stream like this: -BO cmd, EXE fence -BO dst, WRITE fence -BO src, READ fence The fence emited will be EXE|WRITE|READ, fency_type will be set to EXE|WRITE|READ but yet once the EXE fence is signaled this EXE BO can be free (or reused) right ? ie fence not fully signaled. If that's right then i didn't fully understand fence yet :) If so, i think i already asked with one, does signaling multiple time same sequence number with different flag isn't troublesome ? Because then i will emit multiple time the sequence to free EXE buffer as soon as possible. Also when you call drm_bo_handle_validate you put the bo on the unfenced list, don't you ? Isn't there another way to get buffer object without putting it on validate list ? I need that because fence, class, mask will depend from the command stream and i don't want to scan 2 times the command stream one for getting proper fence class & mask and bo flag mask second to update bo offset in command stream. Thanks a lot Thomas for all your help, you saved me hours of code reading :) And in the end i will have an optimal|beautifull BO & fence code :) Cheers, Jerome Glisse <[EMAIL PROTECTED]> ------------------------------------------------------------------------- This SF.net email is sponsored by the 2008 JavaOne(SM) Conference Register now and save $200. Hurry, offer ends at 11:59 p.m., Monday, April 7! Use priority code J8TLD2. http://ad.doubleclick.net/clk;198757673;13503038;p?http://java.sun.com/javaone -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
