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=-8.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 8B4EEC3A59B for ; Mon, 2 Sep 2019 04:08:46 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 3DF862184D for ; Mon, 2 Sep 2019 04:08:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3DF862184D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 46MGmD2PNKzDqg1 for ; Mon, 2 Sep 2019 14:08:44 +1000 (AEST) Received: from ozlabs.org (bilbo.ozlabs.org [IPv6:2401:3900:2:1::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 46MFv56j3zzDqY5 for ; Mon, 2 Sep 2019 13:29:37 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=ellerman.id.au Received: by ozlabs.org (Postfix, from userid 1034) id 46MFv46j2Qz9sPJ; Mon, 2 Sep 2019 13:29:36 +1000 (AEST) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: f7a0bf7d904e902e13024986b7b357181ee30849 In-Reply-To: To: Christophe Leroy , Benjamin Herrenschmidt , Paul Mackerras From: Michael Ellerman Subject: Re: [PATCH 1/6] powerpc/32s: add an option to exclusively select powerpc 601 Message-Id: <46MFv46j2Qz9sPJ@ozlabs.org> Date: Mon, 2 Sep 2019 13:29:36 +1000 (AEST) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Mon, 2019-08-26 at 15:52:13 UTC, Christophe Leroy wrote: > Powerpc 601 is rather old powerpc which as some important > limitations compared to other book3s/32 powerpcs: > - No Timebase. > - Common BATs for instruction and data. > - No execution protection in segment registers. > - No RI bit in MSR > - ... > > It is starting to be difficult and cumbersome to maintain > kernels that are compatible both with 601 and other 6xx cores. > > Create a compiletime option to exclusively select either powerpc 601 > or other 6xx. > > Signed-off-by: Christophe Leroy Series applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/f7a0bf7d904e902e13024986b7b357181ee30849 cheers