From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7638DC43613 for ; Thu, 20 Jun 2019 13:49:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 563572083B for ; Thu, 20 Jun 2019 13:49:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731983AbfFTNt3 (ORCPT ); Thu, 20 Jun 2019 09:49:29 -0400 Received: from ozlabs.org ([203.11.71.1]:32773 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726551AbfFTNt3 (ORCPT ); Thu, 20 Jun 2019 09:49:29 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 45V38P0wjWz9s5c; Thu, 20 Jun 2019 23:49:24 +1000 (AEST) From: Michael Ellerman To: Benjamin Herrenschmidt , Christoph Hellwig , paulus@samba.org Cc: Larry.Finger@lwfinger.net, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, aaro.koskinen@iki.fi Subject: Re: [PATCH] powerpc: enable a 30-bit ZONE_DMA for 32-bit pmac In-Reply-To: References: <20190613082446.18685-1-hch@lst.de> <20190619105039.GA10118@lst.de> <87tvcldacn.fsf@concordia.ellerman.id.au> Date: Thu, 20 Jun 2019 23:49:20 +1000 Message-ID: <87k1dgcqov.fsf@concordia.ellerman.id.au> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Benjamin Herrenschmidt writes: > On Wed, 2019-06-19 at 22:32 +1000, Michael Ellerman wrote: >> Christoph Hellwig writes: >> > Any chance this could get picked up to fix the regression? >> >> Was hoping Ben would Ack it. He's still powermac maintainer :) >> >> I guess he OK'ed it in the other thread, will add it to my queue. > > Yeah ack. If I had written it myself, I would have made the DMA bits a > variable and only set it down to 30 if I see that device in the DT > early on, but I can't be bothered now, if it works, ship it :-) OK, we can do that next release if someone's motivated. > Note: The patch affects all ppc32, though I don't think it will cause > any significant issue on those who don't need it. Yeah. We could always hide it behind CONFIG_PPC_PMAC if it becomes a problem. cheers