On Tue, 21 Dec 2021 11:55:56 +0800, Xiongfeng Wang wrote:
> For memory accesses with write-combining attributes (e.g. those returned
> by ioremap_wc()), the CPU may wait for prior accesses to be merged with
> subsequent ones. But in some situation, such wait is bad for the
> performance.
>
> We introduce io_stop_wc() to prevent the merging of write-combining
> memory accesses before this macro with those after it.
>
> [...]
Applied to arm64 (for-next/misc), thanks!
[1/1] asm-generic: introduce io_stop_wc() and add implementation for ARM64
https://git.kernel.org/arm64/c/d5624bb29f49
--
Catalin
