Re: [PATCH 13/21] arc: dma-mapping: skip invalidating before bidirectional DMA

On 4/2/23 08:52, Vineet Gupta wrote: > CC Shahab > > On 3/27/23 17:43, Arnd Bergmann wrote: >> From: Arnd Bergmann >> >> Some architectures that need to invalidate buffers after bidirectional >> DMA because of speculative prefetching only do a simpler writeback >> before that DMA, while

Re: [PATCH 13/21] arc: dma-mapping: skip invalidating before bidirectional DMA

On 4/2/23 08:52, Vineet Gupta wrote: > CC Shahab > > On 3/27/23 17:43, Arnd Bergmann wrote: >> From: Arnd Bergmann >> >> Some architectures that need to invalidate buffers after bidirectional >> DMA because of speculative prefetching only do a simpler writeback >> before that DMA, while

Re: [PATCH 13/21] arc: dma-mapping: skip invalidating before bidirectional DMA

CC Shahab On 3/27/23 17:43, Arnd Bergmann wrote: From: Arnd Bergmann Some architectures that need to invalidate buffers after bidirectional DMA because of speculative prefetching only do a simpler writeback before that DMA, while architectures that don't need to do the second invalidate tend

[PATCH 13/21] arc: dma-mapping: skip invalidating before bidirectional DMA

From: Arnd Bergmann Some architectures that need to invalidate buffers after bidirectional DMA because of speculative prefetching only do a simpler writeback before that DMA, while architectures that don't need to do the second invalidate tend to have a combined writeback+invalidate before the