Re: [PATCH v5 0/5] x86/umwait: Enable user wait instructions

[Andy Lutomirski]

On Wed, Jun 19, 2019 at 6:43 PM Fenghua Yu <fenghua.yu@xxxxxxxxx> wrote:
> The sysfs interface files are in /sys/devices/system/cpu/umwait_control/

This might be a silly question, but: what do we envision as the use
case for changing the C0.2 setting?  I'm wondering if we'll ever end
up wanting it as a prctl() instead of a sysfs file.