On Fri, 2013-11-01 at 18:30 +0200, Victor Kaplansky wrote: > "David Laight" <david.lai...@aculab.com> wrote on 11/01/2013 06:25:29 PM: > > gcc will do unexpected memory accesses for bit fields that are > > adjacent to volatile data. > > In particular it may generate 64bit sized (and aligned) RMW cycles > > when accessing bit fields. > > And yes, this has caused real problems. > > Thanks, I am aware about this bug/feature in gcc.
AFAIK, this has been fixed in 4.8 and 4.7.3 ... Cheers, Ben. > -- Victor > > _______________________________________________ > Linuxppc-dev mailing list > linuxppc-...@lists.ozlabs.org > https://lists.ozlabs.org/listinfo/linuxppc-dev -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
