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=-2.3 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=no 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 538C5CA9ECB for ; Thu, 31 Oct 2019 15:57:57 +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 27F922087F for ; Thu, 31 Oct 2019 15:57:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="n0/Lo5bM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 27F922087F Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=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=BvyGi/ip2OABOlgHFZHx6ensGktnbDeSuWHFDBXKl60=; b=n0/Lo5bMEu4wBt xgKFcxNXnXVh7hy749vCM9XLSoj2r2Qar++N77yvwE1SP82OUaoiPx2NUQHQQCIpeGzjU9lE+LTZk S54vStUE7/3SoXrz0LVajANz5JcW255Vm3k7hyw49qyfDmguyspyy9xRjwo1Pg7+KkfrgX/3bb+bv UvbRc1zIzJiyq5KLeONGOd7et9ROKmLkwMsTFzFC9NE+Ay+TP4UPh38LRolTEVE3eSInEw+w2OPGo 08gTZB9KBumKaAyb4qaO4R32n/jDheiiNwwMR+x/I7wOdEH8ZnUPr8cwlmHZsh/HlDpxq0gR5Koko EyjX0MlkcDApzd3yK9uw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iQCpg-0003Kl-CL; Thu, 31 Oct 2019 15:57:56 +0000 Received: from verein.lst.de ([213.95.11.211]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iQCpd-0003Js-5H for linux-arm-kernel@lists.infradead.org; Thu, 31 Oct 2019 15:57:54 +0000 Received: by verein.lst.de (Postfix, from userid 2407) id 4F39B68BE1; Thu, 31 Oct 2019 16:57:50 +0100 (CET) Date: Thu, 31 Oct 2019 16:57:50 +0100 From: Christoph Hellwig To: Nicolas Saenz Julienne Subject: Re: [PATCH] dma/direct: turn ARCH_ZONE_DMA_BITS into a variable Message-ID: <20191031155750.GA7394@lst.de> References: <20191031152837.15253-1-nsaenzjulienne@suse.de> <20191031154759.GA7162@lst.de> <40d06d463c05d36968e8b64924d78f7794f8de50.camel@suse.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <40d06d463c05d36968e8b64924d78f7794f8de50.camel@suse.de> User-Agent: Mutt/1.5.17 (2007-11-01) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191031_085753_352531_C0C3A244 X-CRM114-Status: GOOD ( 11.06 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-s390@vger.kernel.org, Vasily Gorbik , Will Deacon , Catalin Marinas , linuxppc-dev@lists.ozlabs.org, Heiko Carstens , linux-kernel@vger.kernel.org, Christian Borntraeger , iommu@lists.linux-foundation.org, Paul Mackerras , Michael Ellerman , Benjamin Herrenschmidt , Robin Murphy , Christoph Hellwig , linux-arm-kernel@lists.infradead.org, Marek Szyprowski Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Oct 31, 2019 at 04:53:13PM +0100, Nicolas Saenz Julienne wrote: > > > +#define ARM64_ZONE_DMA_BITS 30 > > > + > > > /* > > > * We need to be able to catch inadvertent references to memstart_addr > > > * that occur (potentially in generic code) before arm64_memblock_init() > > > @@ -424,6 +427,8 @@ void __init arm64_memblock_init(void) > > > else > > > arm64_dma_phys_limit = PHYS_MASK + 1; > > > > > > + zone_dma_bits = ARM64_ZONE_DMA_BITS; > > > + > > > reserve_crashkernel(); > > > > This actually adds a new limit, as there wasn't one before for arm64. > > Well, as zone_dma_bits is only relevant in dma/direct when ZONE_DMA is defined > I figured it doesn't matter if the variable is set conditionally to ZONE_DMA or > not. I'd much prefer that to do separately. _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel