On Wed, Oct 31, 2018 at 08:50:53PM +0000, Maciej W. Rozycki wrote: > On Wed, 31 Oct 2018, Christoph Hellwig wrote: > > > Can you send me your .config? > > Sure, attached. > > This is an updated 4.19 defconfig I was going to submit as I tripped over > this problem, so just rename it to .config and use `make olddefconfig' to > regenerate a full version. Fails to compile for me with: cc1: error: ‘-march=r3000’ requires ‘-mfp32’ using the x86_64 corss gcc 8 from Debian testing. Either way the config looks like we have all the required bits for non-coherent dma support. The only guess is that somehow dma_cache_wback_inv aren't hooked up to the right functions for some reason, but I can't really think off why.
