Re: [PATCH v5 2/6] arm64: vdso32: Detect binutils support for dmb ishld

From: Nick Desaulniers
Date: Thu Oct 03 2019 - 16:56:53 EST


On Thu, Oct 3, 2019 at 1:49 PM Will Deacon <will@xxxxxxxxxx> wrote:
>
> On Thu, Oct 03, 2019 at 01:18:16PM -0700, Nick Desaulniers wrote:
> > On Thu, Oct 3, 2019 at 10:48 AM Vincenzo Frascino
> > <vincenzo.frascino@xxxxxxx> wrote:
> > >
> > > Older versions of binutils that do not support certain types of memory
> > > barriers can cause build failure of the vdso32 library.
> >
> > Do you know specific version numbers of binutils that are affected?
> > May be helpful to have in the commit message just for future
> > travelers.
>
> A quick bit of archaeology suggests e797f7e0b2be added this back in 2012,
> which seems to correlate with the 2.24 release.

Cool, thanks for digging. Vincenzo, can we please add that to the
commit message?
--
Thanks,
~Nick Desaulniers