Re: [RFC PATCH 0/2] Introduce a way to adjust CLOCK_BOOTTIME from userspace for VM guests

[Greg Kroah-Hartman]

On Wed, Feb 10, 2021 at 07:39:06PM +0900, Hikaru Nishida wrote:
> From: Hikaru Nishida <hikalium@xxxxxxxxxxxx>
> 
> 
> Hi folks,
> 
> We'd like to add a sysfs interface that enable us to advance
> CLOCK_BOOTTIME from userspace.

Why sysfs?  What device is the clock that you are attaching to here?
Why not use the existing kernel api to adjust clocks?

thanks,

greg k-h