Re: [PATCH] arm: kernel: add support for detecting armv8 cpu cache information

Russell King - ARM Linux
2018-10-18T08:56:09Z

On Thu, Oct 18, 2018 at 02:16:47PM +0800, Teng Fei Fan wrote:
> This patch adds support for cacheinfo on 32bit ARMv8 platform.
> Add support for detecting cpu cache information cpu cache information
> via sysfs for 32bit armv8 platform. And export to sysfs then userspace
> can get from /sys/devices/system/cpu/cpuX/cache.

You don't explain why this is needed.

We don't do this for previous 32-bit CPUs, so why should we do this
for ARMv8 running on a 32-bit kernel?

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