On Tue, Jun 19, 2018 at 10:39:56PM +1000, Michael Ellerman wrote:
> Ram Pai <linux...@us.ibm.com> writes:
>
> > When a thread forks the contents of AMR, IAMR, UAMOR registers in the
> > newly forked thread are not inherited.
> >
> > Save the registers before forking, for content of those
> > registers to be automatically copied into the new thread.
> >
> > CC: Michael Ellerman <m...@ellerman.id.au>
> > CC: Florian Weimer <fwei...@redhat.com>
> > CC: Andy Lutomirski <l...@kernel.org>
> > CC: Thiago Jung Bauermann <bauer...@linux.ibm.com>
> > Signed-off-by: Ram Pai <linux...@us.ibm.com>
>
> Again this is an ABI change but we'll call it a bug fix I guess.
yes. the same defense here too. its a behaviorial change for the better.
Single threaded applications will not see any behaviorial change.
Multithreaded apps, which were unable to consume, the behavior will now be
able to do so.
>
> I'll add:
>
> Fixes: cf43d3b26452 ("powerpc: Enable pkey subsystem")
> Cc: sta...@vger.kernel.org # v4.16+
yes. Thanks
RP
