Re: [PATCH V2] x86/intel_rdt: Ensure usage of CPUs are locked while needed

From: Borislav Petkov
Date: Tue Dec 11 2018 - 15:43:24 EST

On Tue, Dec 11, 2018 at 11:02:08AM -0800, Reinette Chatre wrote:
> I just wanted to emphasize that it is not the schemata writing that
> needs to be protected, but instead the pseudo-locking code that runs
> after schemata programming that needs to run on a particular CPU. The
> new patch subject could be interpreted to mean the former ... but that
> is starting to sound like nitpicking by me.

Nah, that's not nitpicking - it is important that we sort out stuff
fully before committing.

Now, I'm trying to understand what you're telling me and I believe you
mean what update_domains() does, yes?

And I guess a more fitting subject in that case could be:

x86/intel_rdt: Ensure a CPU remains online for the region's pseudo-locking sequence

or so, and then the commit message explains in more detail what that
title actually means. :)



Good mailing practices for 400: avoid top-posting and trim the reply.