On Sun, May 23, 2021 at 3:38 AM Richard Purdie
<[email protected]> wrote:
>
> On Sat, 2021-05-22 at 21:30 -0700, Khem Raj wrote:
> > Glibc on aarch64 has a memory tagging option that can be enabled
> > via GLIBC_TUNABLES="glibc.mem.tagging=$SOMETHING" when glibc
> > is built with memory tagging support and the kernel/HW supports
> > MTE. There should be no side effects unless the user turns it
> > on with approprate HW support
> >
> > Linux 5.4 headers and binutils 2.33.1 or newer is needed.
> >
> > Signed-off-by: Khem Raj <[email protected]>
> > ---
> >  meta/recipes-core/glibc/glibc_2.34.bb | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/meta/recipes-core/glibc/glibc_2.34.bb 
> > b/meta/recipes-core/glibc/glibc_2.34.bb
> > index 0deb727ae4..37cf8ed85f 100644
> > --- a/meta/recipes-core/glibc/glibc_2.34.bb
> > +++ b/meta/recipes-core/glibc/glibc_2.34.bb
> > @@ -91,6 +91,7 @@ EXTRA_OECONF += "${@get_libc_fpu_setting(bb, d)}"
> >
> >
> >
> >
> >  EXTRA_OECONF_append_x86 = " --enable-cet"
> >  EXTRA_OECONF_append_x86-64 = " --enable-cet"
> > +EXTRA_OECONF_append_aarch64 = " --enable-memory-tagging"
> >
> >
> >
> >
> >  PACKAGECONFIG ??= "nscd"
> >  PACKAGECONFIG[nscd] = "--enable-nscd,--disable-nscd"
>
> glibc 2.34 doesn't exist in master? :)

ah I should have rebased
>
> Cheers,
>
> Richard
>
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