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=-0.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS 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 54D7BCA9EAF for ; Mon, 21 Oct 2019 17:55:39 +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 289C62086D for ; Mon, 21 Oct 2019 17:55:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Ge4jnR03" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 289C62086D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=suse.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-Type:Cc: List-Subscribe:List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: MIME-Version:References:In-Reply-To:Date:To:From:Subject:Message-ID:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=06bFG43kcHWWsPQk0+97WfRntpDZKCR/F3vLB6dPyhg=; b=Ge4jnR03IwsDd7tDmfZjieYDP cVaD8bnTTBCJzQrdlyfAjq/VMYIhXZmBzV9wGYU7D/CZ8iYbz4qllzZ5TWrMA13uNa/NHo/+G6O4s 1KfwROrLkCDYn8xP8Mn+FcJ/J5m3xelSFeGhakZQEfn0ZGdOGcFMKeJI/lT8TReR2/Iyo3WAun0SI VvlF08+2lNnKtiEIqx/kywkbdFif7ErjQLpfKij/Qq+v2F0iSJ5788E7L5FbSW7C9oeiiOR+DoueJ z3CCRpjD0jKbPntQ+onahwmBBbdRb0NXEvYXr7KGZuSzd27nM2/Am9Cuv7ExjNykv1RbtVSg5zRbi EbZ/3t6oA==; 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 1iMbu0-0001fJ-83; Mon, 21 Oct 2019 17:55:32 +0000 Received: from mx2.suse.de ([195.135.220.15] helo=mx1.suse.de) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iMbtw-0001ZL-S1; Mon, 21 Oct 2019 17:55:30 +0000 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.220.254]) by mx1.suse.de (Postfix) with ESMTP id 0BA09AC40; Mon, 21 Oct 2019 17:55:27 +0000 (UTC) Message-ID: <9208de061fe2b9ee7b74206b3cd52cc116e43ac0.camel@suse.de> Subject: Re: [PATCH v6 3/4] arm64: use both ZONE_DMA and ZONE_DMA32 From: Nicolas Saenz Julienne To: Qian Cai Date: Mon, 21 Oct 2019 19:55:25 +0200 In-Reply-To: References: <6703f8dab4a21fe4e1049f8f224502e1733bf72c.camel@suse.de> User-Agent: Evolution 3.32.4 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191021_105529_051782_B49EDCFB X-CRM114-Status: GOOD ( 11.08 ) 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: f.fainelli@gmail.com, will@kernel.org, marc.zyngier@arm.com, catalin.marinas@arm.com, wahrenst@gmx.net, linux-kernel@vger.kernel.org, Rob Herring , linux-mm@kvack.org, mbrugger@suse.com, linux-rpi-kernel@lists.infradead.org, phill@raspberrypi.org, Robin Murphy , Christoph Hellwig , linux-arm-kernel@lists.infradead.org, m.szyprowski@samsung.com Content-Type: multipart/mixed; boundary="===============0401666714779585556==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============0401666714779585556== Content-Type: multipart/signed; micalg="pgp-sha256"; protocol="application/pgp-signature"; boundary="=-HpXuUqy8wDt6AUMeP1G+" --=-HpXuUqy8wDt6AUMeP1G+ Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Mon, 2019-10-21 at 13:25 -0400, Qian Cai wrote: > > On Oct 21, 2019, at 1:01 PM, Nicolas Saenz Julienne > > wrote: > >=20 > > Could you enable CMA debugging to see if anything interesting comes out= of > > it. >=20 > I did but nothing interesting came out. Did you use the same config I gav= e? Yes, aside from enabling ZONE_DMA. > Also, it has those cmdline. > > page_poison=3Don page_owner=3Don numa_balancing=3Denable \ > systemd.unified_cgroup_hierarchy=3D1 debug_guardpage_minorder=3D1 \ > page_alloc.shuffle=3D1 No luck, still works for me even after adding those extra flags. IIRC most = of them (if not all) are not even parsed by the time CMA is configured. So, can you confirm the zones setup you're seeing is similar to this one: [ 0.000000][ T0] Zone ranges: [ 0.000000][ T0] DMA [mem 0x00000000802f0000-0x00000000bffffff= f] [ 0.000000][ T0] DMA32 [mem 0x00000000c0000000-0x00000000fffffff= f] [ 0.000000][ T0] Normal [mem 0x0000000100000000-0x00000093fcfffff= f] Maybe your memory starts between 0xe0000000-0xffffffff. That would be problematic (although somewhat unwarranted). Regards, Nicolas --=-HpXuUqy8wDt6AUMeP1G+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEErOkkGDHCg2EbPcGjlfZmHno8x/4FAl2t8Q0ACgkQlfZmHno8 x/6stwf9HqWsWOip+MXq4sVWh+Y20OExIRxrBFOULlN6U/sctaP4D865ew+u+Q+w +W9JEpEC77RF5P5lrvYt+TgLFjggGREe7qZhjsfVNQBXUvrwsO5m842eoP852h6e japrXbQa51kSW5bdKgwSpi8+ZWw39O0IGNO/+kbts8eesc3IVbWYXOZ7lz0MIn44 OxocoMYDmWtCSR459p3O980E8KUzkyJD/4R9cGGfkO66RCPXaDy2pb2e2YD0mYL3 ArxUeTX2rLCjQcC7qGKFnCs/i50c5oRfdX25MZmn8t+c8ZNy0s8RuSvVR0uYj/HB 4t43gk/N8RDsPoNRxMFiDbJ3c0mbXA== =LNBk -----END PGP SIGNATURE----- --=-HpXuUqy8wDt6AUMeP1G+-- --===============0401666714779585556== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============0401666714779585556==--