virt/steal_governor: Enable the driver

Provide a config option to enable the steal_governor driver.
Since the feature targets paravirtualized environments and requires SMP,
enforce those dependencies. The driver selects CONFIG_PREFERRED_CPU
for the core scheduler mechanisms to work.

It is recommended to build the driver as a module (m) instead of
built-in (y) due to the following reasons:

- Module parameters are read-only after initialization. Building as a
  module allows updating these parameters by simply reloading the module.
  Default module parameters cannot work in all configurations.

- The driver can be completely disabled by unloading the module.

- This feature works best when all VMs operate in a cooperative manner.
  Requiring an explicit module load ensures intentional deployment
  across all VMs by the system administrator.

Suggested-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20260928053728.797539-14-sshegde@linux.ibm.com

0 files changed, 0 insertions, 0 deletions