Messages in this thread | ![/](/images/icornerl.gif) | | From | Catalin Marinas <> | Subject | Re: [PATCH v2] asm-generic: introduce io_stop_wc() and add implementation for ARM64 | Date | Wed, 22 Dec 2021 11:26:28 +0000 |
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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
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