Hello, sorry for delay in answer.

I think you might need to update the other build systems (Android.mk/meson)

Have done it for meson, but with Android i can't check if issue present or
if it will be fixed. And seems it requires some extra knowledge/time. Could
we try to discuss it in separate thread/patch?

The toplevel meson/makefile have a -mstackrealign that seem to make the
> description of the issue you're fixing.
> Maybe that's where this change should go.

Do you mean to move compilation flag for all libs? Seems at this moment
flag mstackrealign is needed only for i965-dri, so maybe its better to
enable only if needed?

For meson it might be nice to add a c_sse2_args = ['-msse2',
> '-mstackrealign'] at the src/intel level

Done

Also, since this is extremely trivial and fixes bugs, this should be cc'd
> to mesa stable for 18.1 and 18.2

Sorry, not clear for me: should i do anything with that?


On Wed, Sep 5, 2018 at 1:19 AM, Dylan Baker <[email protected]> wrote:

> Quoting Sergii Romantsov (2018-09-04 03:46:23)
> > Seems in case of 32-bit library, usage of msse2 makes
> > some stack corruption or incorrect instructions.
> > Usage with mstackrealign fixes that case.
> >
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=107779
> > Signed-off-by: Sergii Romantsov <[email protected]>
> > ---
> >  src/mesa/drivers/dri/i965/Makefile.am | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/src/mesa/drivers/dri/i965/Makefile.am
> b/src/mesa/drivers/dri/i965/Makefile.am
> > index 889d4c6..0afa7a2 100644
> > --- a/src/mesa/drivers/dri/i965/Makefile.am
> > +++ b/src/mesa/drivers/dri/i965/Makefile.am
> > @@ -44,7 +44,7 @@ AM_CFLAGS = \
> >         $(WNO_OVERRIDE_INIT) \
> >         $(LIBDRM_CFLAGS) \
> >         $(VALGRIND_CFLAGS) \
> > -       -msse2
> > +       -msse2 -mstackrealign
> >
> >  AM_CXXFLAGS = $(AM_CFLAGS)
> >
> > --
> > 2.7.4
> >
>
> Also, since this is extremely trivial and fixes bugs, this should be cc'd
> to
> mesa stable for 18.1 and 18.2
>
> Thanks,
> Dylan
>
> _______________________________________________
> mesa-dev mailing list
> [email protected]
> https://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
>


-- 
Sergii Romantsov
GlobalLogic Inc.
www.globallogic.com
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