Re: Surprising code generated for vdso_read_begin()

From: Arnd Bergmann
Date: Sun Feb 16 2020 - 13:11:50 EST


On Sat, Jan 11, 2020 at 12:33 PM Segher Boessenkool
<segher@xxxxxxxxxxxxxxxxxxx> wrote:
>
> On Fri, Jan 10, 2020 at 07:45:44AM +0100, Christophe Leroy wrote:
> > Le 09/01/2020 Ã 21:07, Segher Boessenkool a Ãcrit :
> > >It looks like the compiler did loop peeling. What GCC version is this?
> > >Please try current trunk (to become GCC 10), or at least GCC 9?
> >
> > It is with GCC 5.5
> >
> > https://mirrors.edge.kernel.org/pub/tools/crosstool/ doesn't have more
> > recent than 8.1
>
> Arnd, can you update the tools? We are at 8.3 and 9.2 now :-) Or is
> this hard and/or painful to do?

To follow up on this older thread, I have now uploaded 6.5, 7.5, 8.3 and 9.2
binaries, as well as a recent 10.0 snapshot.

I hope these work, let me know if there are problems.

Arnd