From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it0-x242.google.com (mail-it0-x242.google.com [IPv6:2607:f8b0:4001:c0b::242]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 3w9lKQ0bz9zDq8V for ; Sun, 23 Apr 2017 19:58:18 +1000 (AEST) Received: by mail-it0-x242.google.com with SMTP id x188so8191606itb.3 for ; Sun, 23 Apr 2017 02:58:17 -0700 (PDT) Date: Sun, 23 Apr 2017 19:57:55 +1000 From: Nicholas Piggin To: Benjamin Herrenschmidt Cc: linuxppc-dev@lists.ozlabs.org, "Aneesh Kumar K . V\" Subject: Re: [PATCH] powerpc/64s: use ibm,tlbiel-congruence-classes-(hash|radix) dt property Message-ID: <20170423195755.43e36953@roar.ozlabs.ibm.com> In-Reply-To: <1492907951.25766.191.camel@kernel.crashing.org> References: <20170422005854.17128-1-npiggin@gmail.com> <20170422005854.17128-2-npiggin@gmail.com> <1492848130.25766.185.camel@kernel.crashing.org> <20170423091428.16fc298f@roar.ozlabs.ibm.com> <1492907951.25766.191.camel@kernel.crashing.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sun, 23 Apr 2017 10:39:11 +1000 Benjamin Herrenschmidt wrote: > On Sun, 2017-04-23 at 09:14 +1000, Nicholas Piggin wrote: > > I think we were going to take another look at moving the setup code > > later, but I think that might wait until 4.13. > > Except without that we won't boot a post-P9 CPU right ? So we'll end up > having to chase distros to backport it :-( Oh well... Okay, well what if we just move the TLB flushing to somewhere like early_init_mmu(_secondary) for power CPUs first? Non-local tlbie does not seem to have this requirement, so would it make it more robust just to execute that once during boot with the primary thread?