On Tue, Jan 03, 2023 at 11:08:29AM -0800, Linus Torvalds wrote: > On Tue, Jan 3, 2023 at 9:17 AM Heiko Carstens <hca@xxxxxxxxxxxxx> wrote: > > > > On Mon, Dec 19, 2022 at 04:35:36PM +0100, Peter Zijlstra wrote: > > > > > > Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx> > > > --- > > > include/linux/slub_def.h | 12 ++- > > > mm/slab.h | 41 +++++++++++-- > > > mm/slub.c | 146 ++++++++++++++++++++++++++++------------------- > > > 3 files changed, 135 insertions(+), 64 deletions(-) > > > > Does this actually work? Just wondering since I end up with an instant > > list corruption on s390. Might be endianness related, but I can't see > > anything obvious at a first glance. ... > the right thing for a 128-bit value. And I have to admit that all > those games with __pcpu_cast_128() make no sense to me. Why isn't it > just using "u128" everywhere without any odd _Generic() games? That would have been my question as well, but the good thing is that you pointed me to the percpu patch - Initially didn't expect any s390 specific code in there, but that is where the bug is. I'll reply to that patch.
