RE: [PATCH v6 2/5] x86/kexec: do unconditional WBINVD for bare-metal in relocate_kernel()

[Huang, Kai]

> > How about below?
> >
> > --- a/arch/x86/kernel/machine_kexec_64.c
> > +++ b/arch/x86/kernel/machine_kexec_64.c
> > @@ -351,6 +351,11 @@ void machine_kexec(struct kimage *image)
> >          *
> >          * I take advantage of this here by force loading the
> >          * segments, before I zap the gdt with an invalid value.
> > +        *
> > +        * Note this resets GS to 0.  Don't make any function call after
> > +        * here since call depth tracking uses per-cpu variables to
> > +        * operate (relocate_kernel is explicitly ignored by call depth
> > +        * tracking).
> >          */
> 
> Looks good, thanks!
> 
> >
> > Btw, it would be very helpful if you can help to verify this patch
> > doesn't break call depth tracking in your environment.  Thanks!
> 
> Tested it and it seemed fine (kexec worked and disassembly did not show any
> calls after GS is cleared, as expected).
> 

Thanks!  Should I add your Tested-by?