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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, URIBL_BLOCKED,USER_AGENT_MUTT 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 B6EABC43381 for ; Sun, 24 Mar 2019 08:37:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 7DA7221741 for ; Sun, 24 Mar 2019 08:37:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="RznzXwJw" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7DA7221741 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=X7FuqeSioyKtc6OooDMkc+3AC9rsK9zuG2wHaYS960k=; b=RznzXwJwX3f2xt JFEM4fUnZ3lkbO9tfd+LA6qlLIwEXzTNS729mvRgbtE1BL57ffnyvp1f4TzjkIDs3YhfJghIUIXR/ /MQioyKmWqDM92DSumx9V9AMKEEgQVHDJIUXpmPY9XBLn+7cFjUxYgaIH8gYhGCRJxt67Fk4RGP+1 1qz+NO3XU8lBDbjc6LlwoMBm8SuQnLUNTdLv6tppEFYyYLPuSYdBoxv0cFSChTCNJp0413wAsvoRt yAj3QvsaPO8Da9G3ZxvHpn21BfCSyUVYSI4CYq+B0BnG4i6aranuG5f9T+l59Y3OxYI+hPS73m2/V SIDEId1YvSxkB7HDUaCw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h7ydT-0008Lp-MU; Sun, 24 Mar 2019 08:37:43 +0000 Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1h7ydP-0008LW-UB; Sun, 24 Mar 2019 08:37:39 +0000 Date: Sun, 24 Mar 2019 01:37:39 -0700 From: Christoph Hellwig To: Anup Patel Subject: Re: 32bit kernel is broken for Linux-5.1-rc1 due to GCC cmodel=medlow Message-ID: <20190324083739.GA31909@infradead.org> References: <20190322104209.GB24367@rapoport-lnx> <20190322132556.GB19263@infradead.org> <20190322134043.GA18818@infradead.org> <20190323172153.GA9085@infradead.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.9.2 (2017-12-15) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Damien Le Moal , Anup Patel , Palmer Dabbelt , Mike Rapoport , Christoph Hellwig , Atish Patra , linux-riscv@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+infradead-linux-riscv=archiver.kernel.org@lists.infradead.org On Sun, Mar 24, 2019 at 07:12:07AM +0530, Anup Patel wrote: > > Just curios - if you just move setup_vm and dependencies into a new > > file that is compiled with -mcmodel=medany, just like setup.c, > > what issues would we still have that require explicitly passing the > > load address? > > There are four cases here: > 1. 64bit with cmodel=medany (default for 64bit system) > 2. 64bit with cmodel=medlow > 3. 32bit with cmodel=medany > 4. 32bit with cmodel=medlow (default for 32bit system) > > I had tried using cmodel=medany as default for both 64bit and 32bit system > and it works fine because there is no issue with cmodel=medany but it is a very > crude fix and things break again if someone explicitly selects cmodel=medlow > using kconfig. Well. What I meant is to override the model just for the new file containing setup_vm, just like we explicitly override the model for setup.c in arch/riscv/kernel/Makefile: CFLAGS_setup.o := -mcmodel=medany _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv