On Fri, Dec 16, 2016 at 02:28:42PM +0100, Geert Uytterhoeven wrote: > On architectures like arm64, swiotlb is tied intimately to the core > architecture DMA support. In addition, ZONE_DMA cannot be disabled. > > To aid debugging and catch devices not supporting DMA to memory outside > the 32-bit address space, add a kernel command line option > "swiotlb=noforce", which disables the use of bounce buffers. > If specified, trying to map memory that cannot be used with DMA will > fail, and a rate-limited warning will be printed. > > Note that io_tlb_nslabs is set to 1, which is the minimal supported > value. > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> What is this based on? I can't apply it on my latest that I had sent to Linus? Could you rebase this one please on: git://git.kernel.org/pub/scm/linux/kernel/git/konrad/swiotlb.git stable/for-linus-4.9 Thanks? Or if alternatively that does not - then please rebase it on b5cab0da75c292ffa0fbd68dd2c820066b2842de Thanks!
