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

[tengfei]

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?