Re: [net-next 1/2] xen-netback: add module parameter to disable ctrl-ring

[Andrew Lunn <andrew@xxxxxxx>]

On Thu, Mar 11, 2021 at 10:59:44PM +0000, ChiaHao Hsu wrote:
> In order to support live migration of guests between kernels
> that do and do not support 'feature-ctrl-ring', we add a
> module parameter that allows the feature to be disabled
> at run time, instead of using hardcode value.
> The default value is enable.

Hi ChiaHao

There is a general dislike for module parameters. What other mechanisms
have you looked at? Would an ethtool private flag work?

     Andrew