Re: [PATCH v13 7/8] x86/vdso: Insert endbr32/endbr64 to vDSO

[Yu, Yu-cheng]

On 9/25/2020 9:18 AM, Andy Lutomirski wrote:
> On Fri, Sep 25, 2020 at 7:58 AM Yu-cheng Yu <yu-cheng.yu@xxxxxxxxx> wrote:
> > From: "H.J. Lu" <hjl.tools@xxxxxxxxx>
> >
> > When Indirect Branch Tracking (IBT) is enabled, vDSO functions may be
> > called indirectly, and must have ENDBR32 or ENDBR64 as the first
> > instruction.  The compiler must support -fcf-protection=branch so that it
> > can be used to compile vDSO.
>
> Acked-by: Andy Lutomirski <luto@xxxxxxxxxx>

Thanks!

Yu-cheng