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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SIGNED_OFF_BY,SPF_PASS 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 60A55C10F14 for ; Sun, 21 Apr 2019 14:48:03 +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 1157F2087B for ; Sun, 21 Apr 2019 14:48:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1157F2087B 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 lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 44nCHj0m54zDqGX for ; Mon, 22 Apr 2019 00:48:01 +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 44nBfD4hMxzDqMt for ; Mon, 22 Apr 2019 00:19:00 +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 44nBfC6JXcz9sML; Mon, 22 Apr 2019 00:18:58 +1000 (AEST) X-powerpc-patch-notification: thanks X-powerpc-patch-commit: 56c46bba9bbfe229b4472a5be313c44c5b714a39 X-Patchwork-Hint: ignore In-Reply-To: <20190327033554.4926-1-ruscur@russell.cc> To: Russell Currey , linuxppc-dev@lists.ozlabs.org From: Michael Ellerman Subject: Re: powerpc/64: Fix booting large kernels with STRICT_KERNEL_RWX Message-Id: <44nBfC6JXcz9sML@ozlabs.org> Date: Mon, 22 Apr 2019 00:18:58 +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: , Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Wed, 2019-03-27 at 03:35:54 UTC, Russell Currey wrote: > With STRICT_KERNEL_RWX enabled anything marked __init is placed at a 16M > boundary. This is necessary so that it can be repurposed later with > different permissions. However, in kernels with text larger than 16M, > this pushes early_setup past 32M, incapable of being reached by the > branch instruction. > > Fix this by setting the CTR and branching there instead. > > Fixes: 1e0fc9d1eb2b ("powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs") > Signed-off-by: Russell Currey Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/56c46bba9bbfe229b4472a5be313c44c cheers