[PATCH 1/1] x86: Add NT_X86_SHSTK note

[Schimpe, Christina]

Hi H.J., 

Thank you for the review. 
As this my first time contributing: Could you commit on my behalf?

BR,
Christina

> -----Original Message-----
> From: H.J. Lu <hjl.tools@gmail.com>
> Sent: Wednesday, December 27, 2023 4:59 PM
> To: Schimpe, Christina <christina.schimpe@intel.com>
> Cc: binutils@sourceware.org
> Subject: Re: [PATCH 1/1] x86: Add NT_X86_SHSTK note
> 
> On Wed, Dec 27, 2023 at 6:20 AM Schimpe, Christina
> <christina.schimpe@intel.com> wrote:
> >
> > Define NT_X86_SHSTK which is the note for x86 Shadow Stack (SHSTK) to
> > support Intel SHSTK in Linux kernel.
> > For now only userspace shadow stack and kernel IBT are supported by
> > the linux kernel.  This note should be used instead of NT_X86_CET
> > introduced in the commit "x86: Add NT_X86_CET note", as it is outdated
> > and only used by old binutils versions.
> > ---
> >  binutils/readelf.c   | 2 ++
> >  include/elf/common.h | 3 +++
> >  2 files changed, 5 insertions(+)
> >
> > diff --git a/binutils/readelf.c b/binutils/readelf.c index
> > 775106fb99c..a464692e1b7 100644
> > --- a/binutils/readelf.c
> > +++ b/binutils/readelf.c
> > @@ -20079,6 +20079,8 @@ get_note_type (Filedata * filedata, unsigned
> e_type)
> >         return _("NT_X86_XSTATE (x86 XSAVE extended state)");
> >        case NT_X86_CET:
> >         return _("NT_X86_CET (x86 CET state)");
> > +      case NT_X86_SHSTK:
> > +       return _("NT_X86_SHSTK (x86 SHSTK state)");
> >        case NT_S390_HIGH_GPRS:
> >         return _("NT_S390_HIGH_GPRS (s390 upper register halves)");
> >        case NT_S390_TIMER:
> > diff --git a/include/elf/common.h b/include/elf/common.h index
> > 244b13361e5..690d78010c4 100644
> > --- a/include/elf/common.h
> > +++ b/include/elf/common.h
> > @@ -645,6 +645,9 @@
> >                                         /*   note name must be "LINUX".  */
> >  #define NT_X86_CET     0x203           /* x86 CET state.  */
> >                                         /*   note name must be "LINUX".  */
> > +#define NT_X86_SHSTK   0x204           /* x86 SHSTK state.  */
> > +                                       /* This replaces NT_X86_CET (0x203).  */
> > +                                       /*   note name must be "LINUX".  */
> >  #define NT_S390_HIGH_GPRS 0x300                /* S/390 upper halves of
> GPRs  */
> >                                         /*   note name must be "LINUX".  */
> >  #define NT_S390_TIMER  0x301           /* S390 timer */
> > --
> > 2.34.1
> >
> >
> 
> OK.
> 
> Thanks.
> 
> --
> H.J.
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