Re: [PATCH v8 07/10] x86/vmscape: Use static_call() for predictor flush

[Pawan Gupta]

On Tue, Mar 24, 2026 at 07:09:31PM +0000, bot+bpf-ci@xxxxxxxxxx wrote:
> > diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
> > index dbe104df339b8..b4d529dd6d305 100644
> > --- a/arch/x86/include/asm/cpufeatures.h
> > +++ b/arch/x86/include/asm/cpufeatures.h
> > @@ -503,7 +503,7 @@
> >  #define X86_FEATURE_CLEAR_CPU_BUF_VM	(21*32+13) /* Clear CPU buffers using VERW before VMRUN */
> > -#define X86_FEATURE_IBPB_EXIT_TO_USER	(21*32+14) /* Use IBPB on exit-to-userspace, see VMSCAPE bug */
> > +/* Free */
> >  #define X86_FEATURE_ABMC		(21*32+15) /* Assignable Bandwidth Monitoring Counters */
> 
> Should the corresponding entry in
> tools/arch/x86/include/asm/cpufeatures.h also be updated to match?

No, because:

  "So its important not to touch the copies in tools/ when doing changes in
  the original kernel headers, that will be done later, when
  check-headers.sh inform about the change to the perf tools hackers."

  https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/tools/include/uapi/README