Re: [PATCH 09/21] riscv: dma-mapping: skip invalidation before bidirectional DMA

On Fri, May 5, 2023, at 07:47, Guo Ren wrote: > On Mon, Mar 27, 2023 at 8:15 PM Arnd Bergmann wrote: >> >> riscv also invalidates the caches before the transfer, which does >> not appear to serve any purpose. > Yes, we can't guarantee the CPU pre-load cache lines randomly during > dma working. >

Re: [PATCH v4 4/6] fbdev: Include instead of

Hi Am 04.05.23 um 17:37 schrieb Sam Ravnborg: Hi Thomas, On Thu, May 04, 2023 at 09:45:37AM +0200, Thomas Zimmermann wrote: Replace include statements for with . Fixes the coding style: if a header is available in asm/ and linux/, it is preferable to include the header from linux/. This only

Re: [PATCH v4 0/6] fbdev: Move framebuffer I/O helpers to

Hi Am 04.05.23 um 10:08 schrieb Arnd Bergmann: On Thu, May 4, 2023, at 09:45, Thomas Zimmermann wrote: Fbdev provides helpers for framebuffer I/O, such as fb_readl(), fb_writel() or fb_memcpy_to_fb(). The implementation of each helper depends on the architecture, but they are all equivalent to

Re: [v4,5/6] fbdev: Move framebuffer I/O helpers into

Hi Am 04.05.23 um 13:59 schrieb Sui Jingfeng: Hi, I tested the whole patch set on a LS3A5000(LoongArch)machine with efifb driver, with both fbtest and fbdev of IGT,  The test result say passed and I can not see anything wired happen. Tested-by: Sui Jingfeng Thanks for testing. On