Re: [PATCH 2/3] rpmsg: virtio_rpmsg_bus: allocate rx/tx buffer separately

On Thu, May 9, 2019 at 8:02 PM Arnaud Pouliquen wrote: > > Hello Xiang, > > This patch has the opposite effect on my platform as DMA allocation is > aligned on 4k page. > For instance i declared: > - in RX 6 buffers (of 512 bytes) > - in TX 4 buffers ( of 512 bytes) > Yes, dma_init_coherent_mem

Re: [PATCH 2/3] rpmsg: virtio_rpmsg_bus: allocate rx/tx buffer separately

Hello Xiang, This patch has the opposite effect on my platform as DMA allocation is aligned on 4k page. For instance i declared: - in RX 6 buffers (of 512 bytes) - in TX 4 buffers ( of 512 bytes) The result is (kernel trace) [ 41.915896] virtio_rpmsg_bus virtio0: rx buffers: va ebb5f5ca, dma