This is work in progress. I published patches to enable DMA_buf P2P a few months ago, but now I'm waiting for the PCI subsystem to pick up core support for this.
I can prepare you a branch based on current upstream kernel next week if you want to test this. Regards, Christian. Am 29.09.2018 09:01 schrieb Dirk Eibach <dirk.eib...@googlemail.com>: I want to access GPU VRAM via PCIe P2P access, like DirectGMA but with mainline drivers. I can acquire a dmabuf from the GPU and pass it to my PCIe framegrabber. But I don't see a way to get the PCIe bus address of the video memory which I need for the P2P transfer. Is there already any infrastructure in place for doing this? If not, what would be the right way to implement this? Add another callback to the dmabuf struct? Cheers Dirk
_______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
