From: Christoph Hellwig <mailto:hch@xxxxxxxxxxxxx> Sent: 2019年1月10日 22:07 > On Thu, Jan 10, 2019 at 01:45:20AM +0000, Andy Duan wrote: > > Do you have any other comments for the patch ? > > Current driver break remoteproc on NXP i.MX8 platform , the patch is bugfix > the virtio rpmsg bus, we hope the patch enter to next and stable tree if no > other comments. > > The answer remains that you CAN NOT call vmalloc_to_page or virt_to_page > on DMA coherent memory, and the driver has been broken ever since it was > merged. We need to fix the root cause and not the symptom. As NXP i.MX8 platform requirement that M4 only access the fixed memory region, so do You have any suggestion to fix the issue and satisfy the requirement ? Or do you have plan To fix the root cause ? Thanks.
