Re: [PATCH 02/21] xtensa: dma-mapping: use normal cache invalidation rules

On Mon, Mar 27, 2023 at 5:14 AM Arnd Bergmann wrote: > > From: Arnd Bergmann > > xtensa is one of the platforms that has both write-back and write-through > caches, and needs to account for both in its DMA mapping operations. > > It does this through a set of operations that is different from any

[PATCH 02/21] xtensa: dma-mapping: use normal cache invalidation rules

From: Arnd Bergmann xtensa is one of the platforms that has both write-back and write-through caches, and needs to account for both in its DMA mapping operations. It does this through a set of operations that is different from any architecture. This is not a problem by itself, but it makes it ra