# Re: \[PATCH 16/17\] sysfs: Provide write method for paravirt

- From: Greg KH \<gregkh@linuxfoundation.org\>
- Date: 2025-11-24 17:04:51 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2025/11/3310726
- Thread: https://ratatoskr.run/linuxppc-dev/2025/11/3303735/t.md

```text
On Wed, Nov 19, 2025 at 06:14:48PM +0530, Shrikanth Hegde wrote:
> This is a debug patch which could be used to set the range of CPUs as
> paravirt. 
> 
> One could make use of this for quick testing of this infra instead of writing
> arch specific code. This allows checking some corner cases by providing custom
> cpumasks which isn't possible with arch method.
> 
> echo 100-200,600-700 >  /sys/devices/system/cpu/paravirt
> cat /sys/devices/system/cpu/paravirt
> 100-200,600-700
> 
> echo > /sys/devices/system/cpu/paravirt
> cat /sys/devices/system/cpu/paravirt
> 
> Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
> ---
> This is currently not meant be merged, since paravirt sysfs file is meant
> to be Read-Only. Hence the documentation hasn't changed. If this method is
> really helpful, then can consider including it depending on the
> discussion.

As you added this to this series, if it is picked up, it WILL be merged
:(

Please try a "Nacked-by:" or something else to keep patches from being
applied.  Or better yet, send them as a totally separate series.

thanks,

greg k-h

```