On Fri, Nov 09, 2018 at 02:10:14PM +0100, Alexandre Belloni wrote: > Hello, > > I'm working on a (not yet upstreamed) dmaengine driver. While rebasing > from v4.19 to v4.20-rc1, I saw that it is not working properly anymore > because dma_pool is allocating descriptors in kseg0 which is cached > while in v4.19, it was allocating them in kseg1. > > Am I missing something to explicitely state that the cache is not dma > coherent? How could I track this behaviour change? You probably want this commit: https://git.kernel.org/pub/scm/linux/kernel/git/mips/linux.git/commit/?h=mips-fixes&id=d01501f85249848a2497968d46dd46d5c6fe32e6
