Re: [RESEND PATCH v4 01/15] x86/resctrl: Support Privilege Level Zero Association (PLZA)

[Namhyung Kim]

Hi Boris,

On Wed, Jul 08, 2026 at 05:12:42PM -0700, Borislav Petkov wrote:
> Hey Namhyung,
> 
> On Wed, Jul 08, 2026 at 05:00:00PM -0700, Namhyung Kim wrote:
> > Well.. it's changed as Linus wanted to not update the headers for
> > trivial changes.  The script is still there but it's not running
> > automatically.  For perf, we used to check ioctl and other user-visible
> > changes for system call tracing.  And some headers moved to the
> > tools/perf/trace/beauty/include directory to sync separately.
> > 
> > I think the headers will be sync-ed less frequently.  So you may need to
> > update the header for tooling changes manually.
> 
> I'm reading this as, we should not touch cpufeatures.h in tools/ and let you
> guys decide when you actually need bits from it? In the sense: only when you
> really need bits from it, you'll update it and other, unrelated bits which are
> not needed, can remain different...
> 
> Or?

No, it's perfectly fine to update any tooling headers if you need it.
It should be up to you whether you update the whole file or just needed
bits.  Just expect us to do it less frequently. :)

Thanks,
Namhyung