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

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Hi Russell,

our team team was trying to check L1, L2 cache size with adb commands help on 32bit ARMv8 platform, so we submit this patch.

Thanks,
Tengfei Fan

On 2018-10-18 16:56, Russell King - ARM Linux wrote:
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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