[MODERATED] Re: [PATCH 1/3] v4 more sampling fun 1

On Thu, Mar 19, 2020 at 08:40:46AM -0700, speck for mark gross wrote:
> On Thu, Mar 19, 2020 at 09:50:40AM +0100, speck for Greg KH wrote:
> > Are you sure about the "avoid churn" stuff?  Can't you just fix up the
> > X86_FEATURE_MATCH() #define to do that?
> I wasn't confident about avoiding churn but I was hoping too.
> Yes, I am pretty sure I can fix up that macro.

My fault ... I thought it might be easier on the backport to
all the stable and long term kernels if we kept this small at
this stage.  If upstream wants to cleanup all the users in a
subsequent patch, then we can do that too.

Alternatively there is Thomas' suggestion to encode the
range of steppings in the upper bits of driver_data and
avoid touching this structure altogether.

-Tony