> > > > > > > > Is it possible that idata->buf is not DMA capable? Any other ideas? > > > > > > Thanks for testing. I don't know, the idata->buf is allocated using > > > alloc_pages_exact(nr_pages * PAGE_SIZE, GFP_KERNEL | __GFP_ZERO); in > > > optee_pool_op_alloc_helper(). > > > > Is this really true for idata->buf or isnt the complete RPMB frame > > memory allocated like this and therefore idata->buf not page aligned? > > You're right. Maybe add an assert of PAGE_ALIGNED(idata->buf)? Thanks, Avri > > > > > For RPMB via tee-supplicant the idata->buf is allocated within > > memdup_user and therefore page aligned. > > Yes, that's a difference. Have you tested with page-aligned buffers to see if it > helps?
