On Thu, Oct 31, 2024 at 02:59:16PM +0100, Borislav Petkov wrote:
> On Thu, Oct 31, 2024 at 12:11:52PM +0200, Kirill A. Shutemov wrote:
> > Do we have magic words for that?
>
> No clue.
>
> > I tried to express that in the second paragraph: "no such users in the
> > upstream".
>
> Right, so perhaps better to spell it out explicitly:
>
> "Backporter's note:
>
> This fixes a theoretical issue only and there's no need to backport it to
> stable."
>
> at the end of the commit message.
Okay.
>
> > > And which commit is it fixing?
> > >
> > > aece27851d44 ("x86, 64bit, mm: Add generic kernel/ident mapping helper")
> > > perhaps?
> >
> > This one is closer:
> >
> > e4630fdd4763 ("x86/power/64: Always create temporary identity mapping correctly")
> >
> > It adds x86_mapping_info::offset.
>
> But aece27851d44 has the faulty check...
It cannot be triggered without 'offset'.
I'll put both.
--
Kiryl Shutsemau / Kirill A. Shutemov
