Re: [PATCH] selftests/vDSO: support DT_GNU_HASH

[Shuah Khan]

On 8/27/24 07:37, Fangrui Song wrote:
> On Tue, Aug 27, 2024 at 10:12 PM Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx> wrote:
> > On 8/26/24 00:07, Xi Ruoyao wrote:
> > > On Wed, 2024-08-14 at 20:26 -0700, Fangrui Song wrote:
> > > > glibc added support for DT_GNU_HASH in 2006 and DT_HASH has been
> > > > obsoleted for more than one decade in many Linux distributions.
> > > >
> > > > Many vDSOs support DT_GNU_HASH. This patch adds selftests support.
> > > >
> > > > Signed-off-by: Fangrui Song <maskray@xxxxxxxxxx>
> > > > ---
> > >
> > > Ping.
> > >
> > > Some context: I'd change LoongArch vDSO to use the toolchain default
> > > instead of forcing DT_HASH (note that LoongArch is launched decades
> > > after all major distros switched to DT_GNU_HASH), but without the
> > > selftest support we'll lose test coverage.
> > >
> > > And now ARM64 has already lost test coverage after commit 48f6430505c0.
> >
> > I am seeing several checkpatch errors - please fix them and send me v2.
> >
> > thanks,
> > -- Shuah
>
> The applicable change is:
>
> --- i/tools/testing/selftests/vDSO/parse_vdso.c
> +++ w/tools/testing/selftests/vDSO/parse_vdso.c
> @@ -177,7 +177,7 @@ void vdso_init_from_sysinfo_ehdr(uintptr_t base)
>          if (vdso_info.gnu_hash) {
>                  vdso_info.nbucket = vdso_info.gnu_hash[0];
>                  /* The bucket array is located after the header (4
> uint32) and the bloom
> -                  filter (size_t array of gnu_hash[2] elements). */
> +                * filter (size_t array of gnu_hash[2] elements). */
>                  vdso_info.bucket = vdso_info.gnu_hash + 4 +
>                                     sizeof(size_t) / 4 * vdso_info.gnu_hash[2];
>          } else {
>
>
> Other checkpatch.pl output is not actionable. `ELF(Sym) *sym` instead
> of `ELF(Sym) * sym` has the correct spacing (used in this file and
> elsewhere ElfW in the code base).

Okay. Send v2 with the actionable change.

thanks,
-- Shuah